Each colour starts at the value shown. Wind colours match across all three units. Dry cells stay neutral. Colours describe the displayed values, not official weather warnings.
Preparing forecast graphs…
Times and values match the detailed forecast. Tap or point at a value for details. Scroll each chart sideways for later days. Rain / precipitation is the total water equivalent per forecast interval, including snow; snowfall is fresh snow per interval, not snow depth.
GFS and ECMWF model comparison. Each model retains its own forecast times and horizon. Precipitation and snowfall amounts cover their own forecast intervals; these can differ between models.
ECMWF IFS · Run 2026-10-17 00:00:00 UTC · 10 days · Times: UTC.
Coordinates: 40.1070984°N, -76.920899°E · Requested elevation: 235 m. Model terrain: 154 m. Terrain and 1000/925/850/700 hPa profiles are used for height estimates.
These are altitude estimates, not a simulation of local mountain terrain. Precipitation, cloud and sea-level pressure use horizontal interpolation only.
Precipitation includes rain and snow water equivalent: preceding 3 hours through day 6, then 6 hours (see cell tooltip). Snow (cm) estimates fresh snowfall from precipitation and temperature using the GFS conversion; it is not snow depth on the ground. Freezing (m) uses additional 600/500 hPa temperatures when available and estimates the lowest resolved 0°C crossing above sea level. When all sampled levels are warm, the upper profile limit is shown (see tooltip). < marks an entirely cold sampled profile and its lower height limit. No extrapolation is used.
Day Time (UTC) Temp. (°C) Humidity (%) Wind (km/h) Wind (knots) Wind (Bft) Direction Precip. (mm) Snow (cm) Pressure (hPa) Freezing (m) Conditions | Saturday, 17/10 00:00 17.3 70 18 10 3B NW — — 1010 3663 Partly cloudy 45% cloud 03:00 15.2 71 23 12 4B NW 0 0 1011 3582 Cloudy 79% cloud 06:00 12.9 74 20 11 4B N 0.15 0 1014 2941 Overcast 98% cloud 09:00 10.8 65 22 12 4B N 0.03 0 1017 1585 Overcast 99% cloud 12:00 8.7 66 24 13 4B N 0.02 0 1021 1313 Overcast 98% cloud 15:00 8.9 53 26 14 4B N 0 0 1025 1136 Overcast 95% cloud 18:00 9.2 44 28 15 4B N 0.00 0 1025 1160 Clear 14% cloud 21:00 9.4 41 24 13 4B N 0 0 1027 1264 Clear 1% cloud Sunday, 18/10 00:00 7.9 46 20 11 4B N 0 0 1029 1439 Clear 0% cloud 03:00 6.7 49 21 11 4B N 0 0 1032 3298 Clear 0% cloud 06:00 5.4 57 18 10 3B N 0 0 1032 3400 Clear 0% cloud 09:00 4.5 65 11 6 2B N 0 0 1034 3191 Clear 0% cloud 12:00 4.3 67 12 6 2B N 0 0 1036 3494 Clear 0% cloud 15:00 8.9 51 11 6 2B N 0 0 1036 3491 Clear 0% cloud 18:00 12.5 41 6 3 2B N 0 0 1035 3639 Clear 0% cloud 21:00 13.4 39 5 3 1B N 0 0 1033 3746 Clear 0% cloud Monday, 19/10 00:00 11.8 46 2 1 1B N 0 0 1033 3917 Clear 0% cloud 03:00 10.9 48 5 3 1B N 0 0 1033 3967 Clear 0% cloud 06:00 9.7 54 5 3 1B N 0 0 1032 3992 Clear 0% cloud 09:00 7.9 66 7 4 2B N 0 0 1032 3953 Clear 5% cloud 12:00 7 73 11 6 2B N 0 0 1032 3898 Clear 9% cloud 15:00 11.7 66 12 6 2B N 0 0 1031 3861 Clear 0% cloud 18:00 16.2 44 16 8 3B N 0 0 1028 3970 Clear 0% cloud 21:00 17.4 38 14 7 3B N 0 0 1026 3872 Clear 0% cloud Tuesday, 20/10 00:00 15.7 44 19 10 3B N 0 0 1025 3742 Clear 0% cloud 03:00 13.3 45 21 11 4B N 0 0 1025 3691 Clear 0% cloud 06:00 11.6 54 21 11 4B N 0 0 1025 3718 Clear 0% cloud 09:00 10.7 65 19 10 3B N 0 0 1024 3729 Clear 0% cloud 12:00 9.9 75 18 10 3B N 0 0 1026 3878 Clear 0% cloud 15:00 13.1 65 19 10 3B N 0.00 0 1026 3967 Clear 0% cloud 18:00 16.5 54 17 9 3B N 0 0 1024 3898 Clear 0% cloud 21:00 17.2 54 17 9 3B N 0 0 1024 3897 Clear 3% cloud Wednesday, 21/10 00:00 14.9 64 20 11 3B N 0 0 1025 3833 Clear 0% cloud 03:00 12.6 70 19 10 3B N 0 0 1026 3830 Clear 0% cloud 06:00 10.5 69 16 9 3B N 0 0 1026 3835 Clear 0% cloud 09:00 8.7 75 16 9 3B N 0 0 1026 3838 Clear 0% cloud 12:00 7.5 75 16 9 3B N 0 0 1027 3816 Clear 0% cloud 15:00 11.3 56 14 7 3B N 0 0 1026 3791 Clear 0% cloud 18:00 14.8 44 13 7 3B N 0 0 1024 3829 Clear 0% cloud 21:00 15.4 44 13 7 3B N 0 0 1022 3855 Clear 0% cloud Thursday, 22/10 00:00 13.4 52 14 8 3B N 0 0 1022 3829 Clear 0% cloud 03:00 11 63 12 6 2B NE 0 0 1022 3766 Clear 0% cloud 06:00 7.2 81 9 5 2B N 0 0 1021 3702 Clear 0% cloud 09:00 6.3 83 12 7 3B N 0 0 1020 3694 Clear 0% cloud 12:00 6.3 77 15 8 3B N 0 0 1021 3640 Clear 0% cloud 15:00 11.9 58 15 8 3B N 0 0 1021 3532 Clear 0% cloud 18:00 15.8 43 17 9 3B N 0 0 1019 3440 Clear 0% cloud 21:00 15.9 42 16 9 3B N 0 0 1018 3351 Clear 0% cloud Friday, 23/10 00:00 12.2 51 19 10 3B N 0 0 1019 3282 Clear 0% cloud 06:00 8.6 72 15 8 3B N 0 0 1022 3215 Clear 6% cloud 12:00 7.8 85 16 9 3B N 0 0 1025 3208 Clear 0% cloud 18:00 13.2 52 14 8 3B N 0 0 1025 3265 Clear 2% cloud Saturday, 24/10 00:00 11.4 61 15 8 3B N 0 0 1027 3513 Partly cloudy 21% cloud 06:00 7.2 63 15 8 3B E 0 0 1029 3536 Clear 1% cloud 12:00 4.6 74 10 6 2B NE 0 0 1031 3343 Clear 0% cloud 18:00 11 50 5 2 1B N 0 0 1030 3292 Clear 0% cloud Sunday, 25/10 00:00 11.2 48 5 3 1B NW 0 0 1029 3358 Clear 0% cloud 06:00 9 53 8 4 2B W 0 0 1029 3161 Clear 0% cloud 12:00 6.4 53 9 5 2B NW 0 0 1030 3167 Clear 6% cloud 18:00 13.9 34 6 3 2B SW 0 0 1028 3171 Clear 0% cloud Monday, 26/10 00:00 12.3 43 15 8 3B SW 0 0 1027 3173 Clear 0% cloud 06:00 8.9 57 10 6 2B SW 0 0 1027 3166 Clear 0% cloud 12:00 7.8 62 9 5 2B NW 0 0 1027 3164 Clear 1% cloud 18:00 17 51 12 6 2B NW 0 0 1025 3160 Overcast 95% cloud Tuesday, 27/10 00:00 16.3 57 9 5 2B NW 0 0 1024 3163 Clear 0% cloud |
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Roundtop Mountain Resort is a downhill ski area in Pennsylvania, United States. Mapped terrain includes easy, intermediate, advanced, expert routes. Its mapped lift network extends from approximately 235 to 411 metres above sea level.
Data: OpenSkiData / OpenSkiMap, OpenStreetMap contributors (ODbL), Skimap.org, Who's On First, Mapterhorn.
Preparing forecast graphs…
Times and values match the detailed forecast. Tap or point at a value for details. Scroll each chart sideways for later days. Rain / precipitation is the total water equivalent per forecast interval, including snow; snowfall is fresh snow per interval, not snow depth.
GFS and ECMWF model comparison. Each model retains its own forecast times and horizon. Precipitation and snowfall amounts cover their own forecast intervals; these can differ between models.
ECMWF IFS · Run 2026-10-17 00:00:00 UTC · 10 days · Times: UTC.
Coordinates: 40.1070984°N, -76.920899°E · Requested elevation: 235 m. Model terrain: 154 m. Terrain and 1000/925/850/700 hPa profiles are used for height estimates.
These are altitude estimates, not a simulation of local mountain terrain. Precipitation, cloud and sea-level pressure use horizontal interpolation only.
Precipitation includes rain and snow water equivalent: preceding 3 hours through day 6, then 6 hours (see cell tooltip). Snow (cm) estimates fresh snowfall from precipitation and temperature using the GFS conversion; it is not snow depth on the ground. Freezing (m) uses additional 600/500 hPa temperatures when available and estimates the lowest resolved 0°C crossing above sea level. When all sampled levels are warm, the upper profile limit is shown (see tooltip). < marks an entirely cold sampled profile and its lower height limit. No extrapolation is used.
Day Time (UTC) Temp. (°C) Humidity (%) Wind (km/h) Wind (knots) Wind (Bft) Direction Precip. (mm) Snow (cm) Pressure (hPa) Freezing (m) Conditions | Saturday, 17/10 00:00 17.3 70 18 10 3B NW — — 1010 3663 Partly cloudy 45% cloud 03:00 15.2 71 23 12 4B NW 0 0 1011 3582 Cloudy 79% cloud 06:00 12.9 74 20 11 4B N 0.15 0 1014 2941 Overcast 98% cloud 09:00 10.8 65 22 12 4B N 0.03 0 1017 1585 Overcast 99% cloud 12:00 8.7 66 24 13 4B N 0.02 0 1021 1313 Overcast 98% cloud 15:00 8.9 53 26 14 4B N 0 0 1025 1136 Overcast 95% cloud 18:00 9.2 44 28 15 4B N 0.00 0 1025 1160 Clear 14% cloud 21:00 9.4 41 24 13 4B N 0 0 1027 1264 Clear 1% cloud Sunday, 18/10 00:00 7.9 46 20 11 4B N 0 0 1029 1439 Clear 0% cloud 03:00 6.7 49 21 11 4B N 0 0 1032 3298 Clear 0% cloud 06:00 5.4 57 18 10 3B N 0 0 1032 3400 Clear 0% cloud 09:00 4.5 65 11 6 2B N 0 0 1034 3191 Clear 0% cloud 12:00 4.3 67 12 6 2B N 0 0 1036 3494 Clear 0% cloud 15:00 8.9 51 11 6 2B N 0 0 1036 3491 Clear 0% cloud 18:00 12.5 41 6 3 2B N 0 0 1035 3639 Clear 0% cloud 21:00 13.4 39 5 3 1B N 0 0 1033 3746 Clear 0% cloud Monday, 19/10 00:00 11.8 46 2 1 1B N 0 0 1033 3917 Clear 0% cloud 03:00 10.9 48 5 3 1B N 0 0 1033 3967 Clear 0% cloud 06:00 9.7 54 5 3 1B N 0 0 1032 3992 Clear 0% cloud 09:00 7.9 66 7 4 2B N 0 0 1032 3953 Clear 5% cloud 12:00 7 73 11 6 2B N 0 0 1032 3898 Clear 9% cloud 15:00 11.7 66 12 6 2B N 0 0 1031 3861 Clear 0% cloud 18:00 16.2 44 16 8 3B N 0 0 1028 3970 Clear 0% cloud 21:00 17.4 38 14 7 3B N 0 0 1026 3872 Clear 0% cloud Tuesday, 20/10 00:00 15.7 44 19 10 3B N 0 0 1025 3742 Clear 0% cloud 03:00 13.3 45 21 11 4B N 0 0 1025 3691 Clear 0% cloud 06:00 11.6 54 21 11 4B N 0 0 1025 3718 Clear 0% cloud 09:00 10.7 65 19 10 3B N 0 0 1024 3729 Clear 0% cloud 12:00 9.9 75 18 10 3B N 0 0 1026 3878 Clear 0% cloud 15:00 13.1 65 19 10 3B N 0.00 0 1026 3967 Clear 0% cloud 18:00 16.5 54 17 9 3B N 0 0 1024 3898 Clear 0% cloud 21:00 17.2 54 17 9 3B N 0 0 1024 3897 Clear 3% cloud Wednesday, 21/10 00:00 14.9 64 20 11 3B N 0 0 1025 3833 Clear 0% cloud 03:00 12.6 70 19 10 3B N 0 0 1026 3830 Clear 0% cloud 06:00 10.5 69 16 9 3B N 0 0 1026 3835 Clear 0% cloud 09:00 8.7 75 16 9 3B N 0 0 1026 3838 Clear 0% cloud 12:00 7.5 75 16 9 3B N 0 0 1027 3816 Clear 0% cloud 15:00 11.3 56 14 7 3B N 0 0 1026 3791 Clear 0% cloud 18:00 14.8 44 13 7 3B N 0 0 1024 3829 Clear 0% cloud 21:00 15.4 44 13 7 3B N 0 0 1022 3855 Clear 0% cloud Thursday, 22/10 00:00 13.4 52 14 8 3B N 0 0 1022 3829 Clear 0% cloud 03:00 11 63 12 6 2B NE 0 0 1022 3766 Clear 0% cloud 06:00 7.2 81 9 5 2B N 0 0 1021 3702 Clear 0% cloud 09:00 6.3 83 12 7 3B N 0 0 1020 3694 Clear 0% cloud 12:00 6.3 77 15 8 3B N 0 0 1021 3640 Clear 0% cloud 15:00 11.9 58 15 8 3B N 0 0 1021 3532 Clear 0% cloud 18:00 15.8 43 17 9 3B N 0 0 1019 3440 Clear 0% cloud 21:00 15.9 42 16 9 3B N 0 0 1018 3351 Clear 0% cloud Friday, 23/10 00:00 12.2 51 19 10 3B N 0 0 1019 3282 Clear 0% cloud 06:00 8.6 72 15 8 3B N 0 0 1022 3215 Clear 6% cloud 12:00 7.8 85 16 9 3B N 0 0 1025 3208 Clear 0% cloud 18:00 13.2 52 14 8 3B N 0 0 1025 3265 Clear 2% cloud Saturday, 24/10 00:00 11.4 61 15 8 3B N 0 0 1027 3513 Partly cloudy 21% cloud 06:00 7.2 63 15 8 3B E 0 0 1029 3536 Clear 1% cloud 12:00 4.6 74 10 6 2B NE 0 0 1031 3343 Clear 0% cloud 18:00 11 50 5 2 1B N 0 0 1030 3292 Clear 0% cloud Sunday, 25/10 00:00 11.2 48 5 3 1B NW 0 0 1029 3358 Clear 0% cloud 06:00 9 53 8 4 2B W 0 0 1029 3161 Clear 0% cloud 12:00 6.4 53 9 5 2B NW 0 0 1030 3167 Clear 6% cloud 18:00 13.9 34 6 3 2B SW 0 0 1028 3171 Clear 0% cloud Monday, 26/10 00:00 12.3 43 15 8 3B SW 0 0 1027 3173 Clear 0% cloud 06:00 8.9 57 10 6 2B SW 0 0 1027 3166 Clear 0% cloud 12:00 7.8 62 9 5 2B NW 0 0 1027 3164 Clear 1% cloud 18:00 17 51 12 6 2B NW 0 0 1025 3160 Overcast 95% cloud Tuesday, 27/10 00:00 16.3 57 9 5 2B NW 0 0 1024 3163 Clear 0% cloud |
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Preparing forecast graphs…
Times and values match the detailed forecast. Tap or point at a value for details. Scroll each chart sideways for later days. Rain / precipitation is the total water equivalent per forecast interval, including snow; snowfall is fresh snow per interval, not snow depth.
GFS and ECMWF model comparison. Each model retains its own forecast times and horizon. Precipitation and snowfall amounts cover their own forecast intervals; these can differ between models.
ECMWF IFS · Run 2026-10-17 00:00:00 UTC · 10 days · Times: UTC.
Coordinates: 40.1032595°N, -76.9254766°E · Requested elevation: 411 m. Model terrain: 155 m. Terrain and 1000/925/850/700 hPa profiles are used for height estimates.
These are altitude estimates, not a simulation of local mountain terrain. Precipitation, cloud and sea-level pressure use horizontal interpolation only.
Precipitation includes rain and snow water equivalent: preceding 3 hours through day 6, then 6 hours (see cell tooltip). Snow (cm) estimates fresh snowfall from precipitation and temperature using the GFS conversion; it is not snow depth on the ground. Freezing (m) uses additional 600/500 hPa temperatures when available and estimates the lowest resolved 0°C crossing above sea level. When all sampled levels are warm, the upper profile limit is shown (see tooltip). < marks an entirely cold sampled profile and its lower height limit. No extrapolation is used.
Day Time (UTC) Temp. (°C) Humidity (%) Wind (km/h) Wind (knots) Wind (Bft) Direction Precip. (mm) Snow (cm) Pressure (hPa) Freezing (m) Conditions | Saturday, 17/10 00:00 16.2 72 27 15 4B NW — — 1010 3662 Partly cloudy 45% cloud 03:00 13.9 74 33 18 5B NW 0 0 1011 3582 Cloudy 80% cloud 06:00 11.3 78 28 15 4B N 0.15 0 1013 2941 Overcast 98% cloud 09:00 9.1 70 29 15 4B N 0.03 0 1017 1583 Overcast 99% cloud 12:00 7 70 32 17 5B N 0.02 0 1021 1314 Overcast 98% cloud 15:00 7.1 57 30 16 5B N 0 0 1025 1136 Overcast 95% cloud 18:00 7.4 48 31 17 5B N 0.00 0 1025 1161 Clear 13% cloud 21:00 7.7 44 27 15 4B N 0 0 1027 1265 Clear 1% cloud Sunday, 18/10 00:00 6.6 46 25 14 4B N 0 0 1029 1439 Clear 0% cloud 03:00 5.9 45 26 14 4B N 0 0 1032 3300 Clear 0% cloud 06:00 5 48 24 13 4B N 0 0 1032 3402 Clear 0% cloud 09:00 4.7 52 17 9 3B N 0 0 1034 3194 Clear 0% cloud 12:00 4.5 52 16 9 3B N 0 0 1036 3494 Clear 0% cloud 15:00 7.5 46 14 7 3B N 0 0 1036 3490 Clear 0% cloud 18:00 10.5 39 8 5 2B N 0 0 1035 3640 Clear 0% cloud 21:00 11.9 37 8 4 2B N 0 0 1033 3747 Clear 0% cloud Monday, 19/10 00:00 11.9 38 7 4 2B N 0 0 1033 3918 Clear 0% cloud 03:00 11.6 39 10 5 2B N 0 0 1033 3967 Clear 0% cloud 06:00 10.5 46 8 4 2B NE 0 0 1032 3992 Clear 0% cloud 09:00 8.8 55 10 6 2B NE 0 0 1032 3953 Clear 5% cloud 12:00 7.8 62 14 8 3B N 0 0 1032 3898 Clear 9% cloud 15:00 11.1 59 16 9 3B N 0 0 1031 3861 Clear 0% cloud 18:00 15 39 21 11 4B N 0 0 1028 3970 Clear 0% cloud 21:00 16.2 36 19 10 3B N 0 0 1026 3873 Clear 0% cloud Tuesday, 20/10 00:00 15.1 38 25 14 4B N 0 0 1025 3743 Clear 0% cloud 03:00 13.6 35 28 15 4B N 0 0 1025 3691 Clear 0% cloud 06:00 12.4 40 29 15 4B N 0 0 1025 3719 Clear 0% cloud 09:00 11.8 48 26 14 4B N 0 0 1024 3729 Clear 0% cloud 12:00 11 55 24 13 4B N 0 0 1026 3877 Clear 0% cloud 15:00 12.9 53 25 13 4B N 0.00 0 1026 3967 Clear 0% cloud 18:00 14.8 55 21 11 4B N 0 0 1024 3898 Clear 0% cloud 21:00 15.5 57 21 11 4B N 0 0 1024 3898 Clear 3% cloud Wednesday, 21/10 00:00 14.2 63 25 14 4B N 0 0 1025 3834 Clear 0% cloud 03:00 12.5 65 24 13 4B NE 0 0 1026 3830 Clear 0% cloud 06:00 10.7 59 18 10 3B NE 0 0 1026 3835 Clear 0% cloud 09:00 8.9 64 19 10 3B NE 0 0 1026 3838 Clear 0% cloud 12:00 7.8 66 19 10 3B NE 0 0 1027 3815 Clear 0% cloud 15:00 10.7 50 18 10 3B NE 0 0 1026 3791 Clear 0% cloud 18:00 13.2 44 16 9 3B N 0 0 1024 3829 Clear 0% cloud 21:00 13.9 45 16 9 3B N 0 0 1022 3855 Clear 0% cloud Thursday, 22/10 00:00 12.7 51 19 10 3B N 0 0 1022 3829 Clear 0% cloud 03:00 10.7 59 16 9 3B NE 0 0 1022 3766 Clear 0% cloud 06:00 7.6 73 13 7 3B N 0 0 1021 3702 Clear 0% cloud 09:00 7 72 17 9 3B N 0 0 1020 3694 Clear 0% cloud 12:00 7.1 61 20 11 4B N 0 0 1021 3640 Clear 0% cloud 15:00 11.1 51 23 12 4B N 0 0 1021 3532 Clear 0% cloud 18:00 14 41 22 12 4B N 0 0 1019 3440 Clear 0% cloud 21:00 14.5 40 24 13 4B N 0 0 1018 3351 Clear 0% cloud Friday, 23/10 00:00 11.9 45 29 16 5B N 0 0 1019 3283 Clear 0% cloud 06:00 8.8 64 23 13 4B NE 0 0 1022 3216 Clear 6% cloud 12:00 7.6 81 22 12 4B NE 0 0 1025 3208 Clear 0% cloud 18:00 11.4 57 16 9 3B N 0 0 1025 3265 Clear 2% cloud Saturday, 24/10 00:00 10.4 61 17 9 3B NE 0 0 1027 3513 Partly cloudy 22% cloud 06:00 6.6 63 18 10 3B E 0 0 1029 3537 Clear 1% cloud 12:00 4.5 67 11 6 2B NE 0 0 1031 3344 Clear 0% cloud 18:00 9.2 54 6 3 2B NE 0 0 1030 3293 Clear 0% cloud Sunday, 25/10 00:00 10.4 42 4 2 1B NE 0 0 1029 3359 Clear 0% cloud 06:00 9 43 5 3 1B W 0 0 1029 3161 Clear 0% cloud 12:00 7.5 36 8 4 2B W 0 0 1030 3167 Clear 6% cloud 18:00 13.2 26 10 5 2B SW 0 0 1028 3171 Clear 0% cloud Monday, 26/10 00:00 12.2 33 15 8 3B SW 0 0 1027 3173 Clear 0% cloud 06:00 9.5 52 10 5 2B W 0 0 1027 3166 Clear 0% cloud 12:00 8.3 58 12 7 3B NW 0 0 1027 3164 Clear 1% cloud 18:00 15.2 55 14 8 3B NW 0 0 1025 3160 Overcast 96% cloud Tuesday, 27/10 00:00 15.5 57 16 8 3B NW 0 0 1024 3163 Clear 0% cloud |
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