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 · Model run: Next update expected:
Day Time (UTC) Temp. (°C) Humidity (%) Wind (km/h) Wind (knots) Wind (Bft) Direction Precip. (mm) Snow (cm) Pressure (hPa) Freezing (m) Conditions | Wednesday, 04/11 06:00 12.7 65 10 5 2B SW — — 1021 3153 Clear 14% cloud 09:00 12.7 72 10 5 2B SW 0 0 1020 3149 Cloudy 61% cloud 12:00 12.8 75 10 5 2B SW 0 0 1020 3154 Partly cloudy 48% cloud 15:00 19.8 52 10 6 2B SW 0 0 1019 3152 Cloudy 77% cloud 18:00 23.8 42 15 8 3B SW 0 0 1017 3141 Clear 0% cloud 21:00 21.5 50 14 8 3B SW 0 0 1016 3139 Clear 0% cloud Thursday, 05/11 00:00 16.8 65 14 7 3B SW 0 0 1017 3137 Clear 0% cloud 03:00 14.9 72 13 7 3B SW 0 0 1016 3129 Clear 12% cloud 06:00 13.8 88 13 7 3B SW 0 0 1016 3119 Partly cloudy 34% cloud 09:00 14.8 96 13 7 3B SW 0 0 1015 3110 Overcast 89% cloud 12:00 16.4 92 14 8 3B SW 0 0 1015 3105 Overcast 100% cloud 15:00 19.8 78 20 11 4B SW 0 0 1014 3102 Overcast 99% cloud 18:00 22 65 21 11 4B SW 0 0 1012 3087 Overcast 100% cloud 21:00 19.9 76 18 10 3B S 0.43 0 1011 3081 Overcast 84% cloud Friday, 06/11 00:00 18.6 81 18 10 3B S 0 0 1012 3087 Partly cloudy 44% cloud 03:00 18.6 86 17 9 3B SW 0 0 1011 3084 Overcast 95% cloud 06:00 18.2 89 15 8 3B SW 0.13 0 1011 3077 Overcast 98% cloud 09:00 17.5 93 11 6 2B SW 0.00 0 1011 3076 Cloudy 76% cloud 12:00 17.1 95 7 4 2B SW 0.02 0 1013 3078 Overcast 97% cloud 15:00 21.2 71 3 1 1B SW 0.12 0 1013 3079 Overcast 96% cloud 18:00 22.6 62 8 4 2B SW 0.58 0 1011 3070 Overcast 95% cloud 21:00 20.6 72 7 4 2B S 0.37 0 1011 3067 Overcast 100% cloud Saturday, 07/11 00:00 17 98 7 4 2B S 0.05 0 1011 3063 Overcast 100% cloud 03:00 15.9 99 2 1 1B NW 0.21 0 1011 3054 Overcast 100% cloud 06:00 15.1 99 13 7 3B NE 1.2 0 1010 3039 Overcast 100% cloud 09:00 13.2 98 17 9 3B NE 3.1 0 1010 3007 Overcast 100% cloud 12:00 12 97 18 9 3B N 3.1 0 1010 3022 Overcast 100% cloud 15:00 12.5 87 17 9 3B NE 0.14 0 1010 3017 Overcast 100% cloud 18:00 12.9 77 14 8 3B NE 0.10 0 1008 3002 Overcast 100% cloud 21:00 12.1 77 11 6 2B N 0 0 1008 2905 Overcast 100% cloud Sunday, 08/11 00:00 10.5 82 10 5 2B NE 0.06 0 1008 2712 Overcast 100% cloud 03:00 9.3 89 7 4 2B N 0.40 0 1007 2448 Overcast 100% cloud 06:00 8.3 96 10 5 2B N 0.80 0 1005 2134 Overcast 100% cloud 09:00 7.6 97 8 4 2B NW 1.6 0 1004 1794 Overcast 100% cloud 12:00 7.8 97 9 5 2B W 1.6 0 1005 1530 Overcast 100% cloud 15:00 9.2 67 19 10 3B NW 0.24 0 1006 1667 Overcast 98% cloud 18:00 13.4 48 23 13 4B NW 0.02 0 1005 1368 Partly cloudy 35% cloud 21:00 12 55 16 9 3B W 0 0 1005 1366 Overcast 87% cloud Monday, 09/11 00:00 9.3 62 14 7 3B W 0 0 1005 1753 Partly cloudy 22% cloud 03:00 7 62 10 5 2B W 0 0 1005 1625 Clear 2% cloud 06:00 6.4 71 11 6 2B SW 0 0 1004 1456 Cloudy 56% cloud 09:00 5.9 79 12 6 2B SW 0 0 1003 1454 Partly cloudy 47% cloud 12:00 7.8 73 16 9 3B W 0 0 1003 1403 Overcast 88% cloud 15:00 11.1 61 21 12 4B NW 0.37 0 1004 1269 Overcast 100% cloud 18:00 12.7 49 19 10 3B NW 0.02 0 1004 1290 Partly cloudy 23% cloud 21:00 10.6 51 18 10 3B NW 0 0 1007 1234 Clear 7% cloud Tuesday, 10/11 00:00 7.3 58 16 9 3B NW 0 0 1010 1056 Clear 3% cloud 03:00 5.4 63 12 7 3B NW 0 0 1011 1044 Clear 1% cloud 06:00 3.7 69 10 5 2B NW 0 0 1013 1493 Partly cloudy 26% cloud |
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Forecast table times: UTC.
Coordinates: 42.5430349°N, -71.4454718°E · Requested elevation: 60 m. Model terrain: 76 m. Terrain and 1000/925/850/700 hPa profiles are used for height estimates.
Outside the available profile, temperature uses an estimated 5.5°C/km height correction; wind retains the nearest available model-level value. Humidity is estimated with adjusted pressure and temperature.
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.

Nashoba Valley Ski Area is a downhill ski area in Massachusetts, United States. Mapped terrain includes beginner, intermediate, advanced routes. Its mapped lift network extends from approximately 60 to 131 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 · Model run: Next update expected:
Day Time (UTC) Temp. (°C) Humidity (%) Wind (km/h) Wind (knots) Wind (Bft) Direction Precip. (mm) Snow (cm) Pressure (hPa) Freezing (m) Conditions | Wednesday, 04/11 06:00 12.7 65 10 5 2B SW — — 1021 3153 Clear 14% cloud 09:00 12.7 72 10 5 2B SW 0 0 1020 3149 Cloudy 61% cloud 12:00 12.8 75 10 5 2B SW 0 0 1020 3154 Partly cloudy 48% cloud 15:00 19.8 52 10 6 2B SW 0 0 1019 3152 Cloudy 77% cloud 18:00 23.8 42 15 8 3B SW 0 0 1017 3141 Clear 0% cloud 21:00 21.5 50 14 8 3B SW 0 0 1016 3139 Clear 0% cloud Thursday, 05/11 00:00 16.8 65 14 7 3B SW 0 0 1017 3137 Clear 0% cloud 03:00 14.9 72 13 7 3B SW 0 0 1016 3129 Clear 12% cloud 06:00 13.8 88 13 7 3B SW 0 0 1016 3119 Partly cloudy 34% cloud 09:00 14.8 97 13 7 3B SW 0 0 1015 3110 Overcast 89% cloud 12:00 16.4 92 14 8 3B SW 0 0 1015 3105 Overcast 100% cloud 15:00 19.8 78 20 11 4B SW 0 0 1014 3102 Overcast 99% cloud 18:00 22 65 21 11 4B SW 0 0 1012 3087 Overcast 100% cloud 21:00 19.8 76 18 10 3B S 0.44 0 1011 3081 Overcast 84% cloud Friday, 06/11 00:00 18.6 81 18 10 3B S 0 0 1012 3087 Partly cloudy 44% cloud 03:00 18.6 87 17 9 3B SW 0 0 1011 3084 Overcast 95% cloud 06:00 18.2 89 15 8 3B SW 0.13 0 1011 3077 Overcast 98% cloud 09:00 17.4 93 11 6 2B SW 0.00 0 1011 3076 Cloudy 76% cloud 12:00 17.1 95 7 4 2B SW 0.02 0 1013 3078 Overcast 97% cloud 15:00 21.2 71 3 1 1B SW 0.12 0 1013 3080 Overcast 96% cloud 18:00 22.6 62 8 4 2B SW 0.58 0 1011 3070 Overcast 95% cloud 21:00 20.6 72 7 4 2B S 0.38 0 1011 3067 Overcast 100% cloud Saturday, 07/11 00:00 17 98 7 4 2B S 0.05 0 1011 3063 Overcast 100% cloud 03:00 15.9 99 2 1 1B NW 0.21 0 1011 3054 Overcast 100% cloud 06:00 15.1 99 13 7 3B NE 1.2 0 1010 3039 Overcast 100% cloud 09:00 13.2 98 17 9 3B NE 3.1 0 1010 3007 Overcast 100% cloud 12:00 12 97 18 9 3B N 3.1 0 1010 3022 Overcast 100% cloud 15:00 12.5 87 17 9 3B NE 0.14 0 1010 3017 Overcast 100% cloud 18:00 12.9 77 14 8 3B NE 0.10 0 1008 3002 Overcast 100% cloud 21:00 12.1 77 11 6 2B N 0 0 1008 2905 Overcast 100% cloud Sunday, 08/11 00:00 10.5 82 10 5 2B NE 0.06 0 1008 2711 Overcast 100% cloud 03:00 9.3 89 7 4 2B N 0.40 0 1007 2448 Overcast 100% cloud 06:00 8.3 96 10 5 2B N 0.80 0 1005 2134 Overcast 100% cloud 09:00 7.6 97 8 4 2B NW 1.6 0 1004 1794 Overcast 100% cloud 12:00 7.8 97 9 5 2B W 1.6 0 1005 1530 Overcast 100% cloud 15:00 9.2 67 19 10 3B NW 0.24 0 1006 1667 Overcast 98% cloud 18:00 13.4 48 23 13 4B NW 0.02 0 1005 1368 Partly cloudy 34% cloud 21:00 11.9 55 16 9 3B W 0 0 1005 1366 Overcast 87% cloud Monday, 09/11 00:00 9.3 62 14 7 3B W 0 0 1005 1754 Partly cloudy 22% cloud 03:00 7 62 10 5 2B W 0 0 1005 1625 Clear 2% cloud 06:00 6.4 71 11 6 2B SW 0 0 1004 1456 Cloudy 57% cloud 09:00 5.9 79 12 6 2B SW 0 0 1003 1454 Partly cloudy 46% cloud 12:00 7.8 73 16 9 3B W 0 0 1003 1403 Overcast 88% cloud 15:00 11.1 61 21 12 4B NW 0.38 0 1004 1269 Overcast 100% cloud 18:00 12.7 49 19 10 3B NW 0.02 0 1004 1290 Partly cloudy 23% cloud 21:00 10.6 51 18 10 3B NW 0 0 1007 1234 Clear 7% cloud Tuesday, 10/11 00:00 7.3 58 16 9 3B NW 0 0 1010 1056 Clear 3% cloud 03:00 5.4 63 12 7 3B NW 0 0 1011 1044 Clear 1% cloud 06:00 3.7 70 10 5 2B NW 0 0 1013 1492 Partly cloudy 26% cloud |
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Forecast table times: UTC.
Coordinates: 42.5418489°N, -71.4449571°E · Requested elevation: 61 m. Model terrain: 76 m. Terrain and 1000/925/850/700 hPa profiles are used for height estimates.
Outside the available profile, temperature uses an estimated 5.5°C/km height correction; wind retains the nearest available model-level value. Humidity is estimated with adjusted pressure and temperature.
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.
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 · Model run: Next update expected:
Day Time (UTC) Temp. (°C) Humidity (%) Wind (km/h) Wind (knots) Wind (Bft) Direction Precip. (mm) Snow (cm) Pressure (hPa) Freezing (m) Conditions | Wednesday, 04/11 06:00 13.6 61 16 9 3B SW — — 1021 3153 Clear 14% cloud 09:00 13.3 68 17 9 3B SW 0 0 1020 3149 Cloudy 62% cloud 12:00 13.2 72 17 9 3B SW 0 0 1020 3154 Partly cloudy 48% cloud 15:00 18.5 55 13 7 3B SW 0 0 1019 3152 Cloudy 77% cloud 18:00 22.4 45 20 11 4B SW 0 0 1017 3141 Clear 0% cloud 21:00 21.4 49 21 12 4B SW 0 0 1016 3139 Clear 0% cloud Thursday, 05/11 00:00 17.2 62 22 12 4B SW 0 0 1017 3137 Clear 0% cloud 03:00 15.4 68 22 12 4B SW 0 0 1016 3129 Clear 12% cloud 06:00 14.5 84 21 11 4B SW 0 0 1016 3119 Partly cloudy 33% cloud 09:00 15.1 94 20 11 3B SW 0 0 1015 3110 Overcast 89% cloud 12:00 16.1 93 21 11 4B SW 0 0 1015 3105 Overcast 100% cloud 15:00 18.7 82 25 13 4B SW 0 0 1014 3102 Overcast 99% cloud 18:00 21 68 23 13 4B SW 0 0 1012 3087 Overcast 100% cloud 21:00 19.4 78 21 11 4B S 0.43 0 1011 3081 Overcast 84% cloud Friday, 06/11 00:00 18.7 80 21 11 4B SW 0 0 1012 3087 Partly cloudy 44% cloud 03:00 18.3 88 21 11 4B SW 0 0 1011 3084 Overcast 95% cloud 06:00 17.8 90 18 10 3B SW 0.13 0 1011 3077 Overcast 98% cloud 09:00 17.3 93 12 6 2B SW 0.00 0 1011 3076 Cloudy 76% cloud 12:00 16.9 94 8 5 2B SW 0.02 0 1013 3078 Overcast 97% cloud 15:00 19.4 78 3 1 1B SW 0.12 0 1013 3080 Overcast 96% cloud 18:00 21.9 64 8 4 2B SW 0.58 0 1011 3070 Overcast 95% cloud 21:00 20.1 73 7 4 2B S 0.36 0 1011 3067 Overcast 100% cloud Saturday, 07/11 00:00 16.7 97 6 3 2B S 0.05 0 1011 3063 Overcast 100% cloud 03:00 15.6 99 2 1 1B NW 0.20 0 1011 3054 Overcast 100% cloud 06:00 14.8 99 15 8 3B NE 1.2 0 1010 3039 Overcast 100% cloud 09:00 13 98 19 10 3B NE 3.1 0 1010 3007 Overcast 100% cloud 12:00 11.8 98 19 10 3B NE 3.1 0 1010 3022 Overcast 100% cloud 15:00 12 89 20 11 3B NE 0.14 0 1010 3017 Overcast 100% cloud 18:00 12.4 79 16 9 3B NE 0.10 0 1008 3002 Overcast 100% cloud 21:00 11.5 79 12 7 2B N 0 0 1008 2905 Overcast 100% cloud Sunday, 08/11 00:00 10 83 11 6 2B NE 0.06 0 1008 2711 Overcast 100% cloud 03:00 8.8 90 7 4 2B NE 0.39 0 1007 2447 Overcast 100% cloud 06:00 7.8 97 11 6 2B N 0.80 0 1005 2134 Overcast 100% cloud 09:00 7.2 98 9 5 2B N 1.6 0 1004 1793 Overcast 100% cloud 12:00 7.4 98 12 6 2B NW 1.6 0 1005 1531 Overcast 100% cloud 15:00 8.6 68 24 13 4B NW 0.24 0 1006 1668 Overcast 98% cloud 18:00 12.7 49 25 14 4B NW 0.02 0 1005 1368 Partly cloudy 34% cloud 21:00 11.4 56 18 10 3B W 0 0 1005 1366 Overcast 87% cloud Monday, 09/11 00:00 8.9 63 17 9 3B W 0 0 1005 1757 Partly cloudy 21% cloud 03:00 6.7 63 13 7 3B W 0 0 1005 1626 Clear 2% cloud 06:00 6.3 71 13 7 3B SW 0 0 1004 1457 Cloudy 56% cloud 09:00 5.7 79 15 8 3B SW 0 0 1003 1455 Partly cloudy 47% cloud 12:00 7.4 74 20 11 4B W 0 0 1003 1403 Overcast 88% cloud 15:00 10.5 63 23 13 4B NW 0.37 0 1004 1269 Overcast 100% cloud 18:00 12 50 20 11 4B NW 0.02 0 1004 1290 Partly cloudy 23% cloud 21:00 10 53 20 11 4B NW 0 0 1007 1234 Clear 7% cloud Tuesday, 10/11 00:00 6.8 59 20 11 4B NW 0 0 1010 1057 Clear 3% cloud 03:00 5 63 16 8 3B NW 0 0 1011 1046 Clear 1% cloud 06:00 4.4 64 14 8 3B NW 0 0 1013 1498 Partly cloudy 26% cloud |
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Forecast table times: UTC.
Coordinates: 42.5405482°N, -71.4479525°E · Requested elevation: 131 m. Model terrain: 77 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.