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 | Thursday, 05/11 06:00 14.7 73 4 2 1B S — — 1011 3056 Partly cloudy 42% cloud 09:00 10.5 87 1 1 0B NE 0.03 0 1010 3047 Cloudy 55% cloud 12:00 11 86 1 0 0B E 0.13 0 1008 3033 Overcast 97% cloud 15:00 10 84 0 0 0B E 0.08 0 1006 3018 Partly cloudy 23% cloud 18:00 9.4 85 3 1 1B N 0.04 0 1005 2999 Partly cloudy 40% cloud 21:00 9.8 93 7 4 2B N 1.2 0 1006 2974 Overcast 90% cloud Friday, 06/11 00:00 12 88 12 7 2B NW 2.6 0 1009 2913 Overcast 82% cloud 03:00 15 60 13 7 3B NW 0.79 0 1008 2881 Partly cloudy 30% cloud 06:00 13.3 70 9 5 2B N 0.36 0 1010 2705 Cloudy 60% cloud 09:00 9.9 82 12 6 2B N 1.3 0 1013 2527 Cloudy 73% cloud 12:00 7.7 82 13 7 3B N 0.77 0 1016 2181 Overcast 93% cloud 15:00 6.1 86 15 8 3B NW 2.1 0 1017 1773 Overcast 96% cloud 18:00 4.8 85 13 7 3B NW 2.5 0 1018 1481 Overcast 99% cloud 21:00 4.3 82 10 5 2B N 1.1 0 1019 1436 Overcast 93% cloud Saturday, 07/11 00:00 4.9 82 11 6 2B NW 1.3 0 1022 1403 Overcast 94% cloud 03:00 5 77 17 9 3B NW 2.2 0 1023 1367 Overcast 93% cloud 06:00 4.3 77 16 9 3B NW 1.8 0 1024 1310 Overcast 90% cloud 09:00 2.8 85 16 9 3B NW 1.7 0 1027 1181 Overcast 92% cloud 12:00 2.6 81 16 8 3B NW 0.67 0 1029 1133 Overcast 93% cloud 15:00 2 80 14 7 3B NW 0.20 0 1030 1070 Overcast 90% cloud 18:00 2.2 81 12 7 2B NW 0.39 0 1031 1091 Overcast 96% cloud 21:00 2.1 85 6 3 2B NW 0.68 0 1032 1075 Overcast 95% cloud Sunday, 08/11 00:00 4.3 72 12 7 2B NW 0.68 0 1033 1275 Overcast 94% cloud 03:00 5.4 68 16 9 3B NW 0.35 0 1032 1378 Overcast 93% cloud 06:00 5 67 11 6 2B N 0.08 0 1032 1441 Overcast 92% cloud 09:00 2.4 83 5 3 1B N 0 0 1032 1521 Overcast 85% cloud 12:00 1.7 80 4 2 1B N 0 0 1032 1646 Overcast 91% cloud 15:00 1.8 80 1 1 1B E 0.04 0 1030 1860 Overcast 83% cloud 18:00 1.6 78 1 1 0B NE 0 0 1029 1982 Overcast 96% cloud 21:00 2.5 80 1 1 1B E 0 0 1027 2221 Overcast 94% cloud Monday, 09/11 00:00 6.6 63 2 1 1B S 0 0 1026 2330 Overcast 92% cloud 03:00 9.3 57 1 1 0B SE 0.08 0 1022 2348 Cloudy 72% cloud 06:00 10.2 60 2 1 1B NW 0 0 1020 2242 Partly cloudy 40% cloud 09:00 5.2 83 1 1 1B N 0 0 1021 2154 Partly cloudy 47% cloud 12:00 5.8 87 8 5 2B N 1.7 0 1022 1878 Overcast 99% cloud 15:00 3.8 88 13 7 3B N 2.5 0 1023 1367 Overcast 99% cloud 18:00 2.6 86 15 8 3B N 1.6 0 1023 1141 Overcast 96% cloud 21:00 2 85 13 7 3B NW 0.89 0 1024 1056 Overcast 99% cloud Tuesday, 10/11 00:00 2.7 82 13 7 3B NW 1.3 0 1025 1128 Overcast 99% cloud 03:00 3.1 80 14 7 3B NW 1.9 0 1025 1167 Overcast 95% cloud 06:00 2.4 82 11 6 2B N 1.4 0 1025 1091 Overcast 98% cloud 09:00 1.3 83 9 5 2B N 0.39 0 1027 972 Overcast 89% cloud 12:00 0.6 84 6 3 2B N 0.23 0 1028 < 915 Cloudy 70% cloud 15:00 -0.9 84 4 2 1B N 0 0 1028 < 915 Partly cloudy 34% cloud 18:00 -2.3 85 5 3 1B N 0 0 1028 < 915 Partly cloudy 41% cloud 21:00 -1.4 84 5 2 1B N 0 0 1029 < 915 Cloudy 62% cloud Wednesday, 11/11 00:00 4 67 6 3 2B N 0 0 1030 1240 Cloudy 53% cloud 03:00 5.6 61 11 6 2B N 0.07 0 1029 1354 Cloudy 68% cloud 06:00 5.8 56 13 7 3B N 0 0 1029 1422 Clear 16% cloud |
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Forecast table times: UTC.
Coordinates: 36.8363583°N, 138.9618992°E · Requested elevation: 743 m. Model terrain: 912 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.

Mt. T is a downhill ski area in Gunma Prefecture, Japan. Mapped terrain includes beginner, easy, intermediate, advanced routes. Its mapped lift network extends from approximately 743 to 1489 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 | Thursday, 05/11 06:00 14.7 73 4 2 1B S — — 1011 3056 Partly cloudy 42% cloud 09:00 10.5 87 1 1 0B NE 0.03 0 1010 3047 Cloudy 55% cloud 12:00 11 86 1 0 0B E 0.13 0 1008 3033 Overcast 97% cloud 15:00 10 84 0 0 0B E 0.08 0 1006 3018 Partly cloudy 23% cloud 18:00 9.4 85 3 1 1B N 0.04 0 1005 2999 Partly cloudy 40% cloud 21:00 9.8 93 7 4 2B N 1.2 0 1006 2974 Overcast 90% cloud Friday, 06/11 00:00 12 88 12 7 2B NW 2.6 0 1009 2913 Overcast 82% cloud 03:00 15 60 13 7 3B NW 0.79 0 1008 2881 Partly cloudy 30% cloud 06:00 13.3 70 9 5 2B N 0.36 0 1010 2705 Cloudy 60% cloud 09:00 9.9 82 12 6 2B N 1.3 0 1013 2527 Cloudy 73% cloud 12:00 7.7 82 13 7 3B N 0.77 0 1016 2181 Overcast 93% cloud 15:00 6.1 86 15 8 3B NW 2.1 0 1017 1773 Overcast 96% cloud 18:00 4.8 85 13 7 3B NW 2.5 0 1018 1481 Overcast 99% cloud 21:00 4.3 82 10 5 2B N 1.1 0 1019 1436 Overcast 93% cloud Saturday, 07/11 00:00 4.9 82 11 6 2B NW 1.3 0 1022 1403 Overcast 94% cloud 03:00 5 77 17 9 3B NW 2.2 0 1023 1367 Overcast 93% cloud 06:00 4.3 77 16 9 3B NW 1.8 0 1024 1310 Overcast 90% cloud 09:00 2.8 85 16 9 3B NW 1.7 0 1027 1181 Overcast 92% cloud 12:00 2.6 81 16 8 3B NW 0.67 0 1029 1133 Overcast 93% cloud 15:00 2 80 14 7 3B NW 0.20 0 1030 1070 Overcast 90% cloud 18:00 2.2 81 12 7 2B NW 0.39 0 1031 1091 Overcast 96% cloud 21:00 2.1 85 6 3 2B NW 0.68 0 1032 1075 Overcast 95% cloud Sunday, 08/11 00:00 4.3 72 12 7 2B NW 0.68 0 1033 1275 Overcast 94% cloud 03:00 5.4 68 16 9 3B NW 0.35 0 1032 1378 Overcast 93% cloud 06:00 5 67 11 6 2B N 0.08 0 1032 1441 Overcast 92% cloud 09:00 2.4 83 5 3 1B N 0 0 1032 1521 Overcast 85% cloud 12:00 1.7 80 4 2 1B N 0 0 1032 1646 Overcast 91% cloud 15:00 1.8 80 1 1 1B E 0.04 0 1030 1860 Overcast 83% cloud 18:00 1.6 78 1 1 0B NE 0 0 1029 1982 Overcast 96% cloud 21:00 2.5 80 1 1 1B E 0 0 1027 2221 Overcast 94% cloud Monday, 09/11 00:00 6.6 63 2 1 1B S 0 0 1026 2330 Overcast 92% cloud 03:00 9.3 57 1 1 0B SE 0.08 0 1022 2348 Cloudy 72% cloud 06:00 10.2 60 2 1 1B NW 0 0 1020 2242 Partly cloudy 40% cloud 09:00 5.2 83 1 1 1B N 0 0 1021 2154 Partly cloudy 47% cloud 12:00 5.8 87 8 5 2B N 1.7 0 1022 1878 Overcast 99% cloud 15:00 3.8 88 13 7 3B N 2.5 0 1023 1367 Overcast 99% cloud 18:00 2.6 86 15 8 3B N 1.6 0 1023 1141 Overcast 96% cloud 21:00 2 85 13 7 3B NW 0.89 0 1024 1056 Overcast 99% cloud Tuesday, 10/11 00:00 2.7 82 13 7 3B NW 1.3 0 1025 1128 Overcast 99% cloud 03:00 3.1 80 14 7 3B NW 1.9 0 1025 1167 Overcast 95% cloud 06:00 2.4 82 11 6 2B N 1.4 0 1025 1091 Overcast 98% cloud 09:00 1.3 83 9 5 2B N 0.39 0 1027 972 Overcast 89% cloud 12:00 0.6 84 6 3 2B N 0.23 0 1028 < 915 Cloudy 70% cloud 15:00 -0.9 84 4 2 1B N 0 0 1028 < 915 Partly cloudy 34% cloud 18:00 -2.3 85 5 3 1B N 0 0 1028 < 915 Partly cloudy 41% cloud 21:00 -1.4 84 5 2 1B N 0 0 1029 < 915 Cloudy 62% cloud Wednesday, 11/11 00:00 4 67 6 3 2B N 0 0 1030 1240 Cloudy 53% cloud 03:00 5.6 61 11 6 2B N 0.07 0 1029 1354 Cloudy 68% cloud 06:00 5.8 56 13 7 3B N 0 0 1029 1422 Clear 16% cloud |
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Forecast table times: UTC.
Coordinates: 36.8363583°N, 138.9618992°E · Requested elevation: 743 m. Model terrain: 912 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 | Thursday, 05/11 06:00 10.1 81 14 7 3B S — — 1011 3056 Partly cloudy 43% cloud 09:00 10.4 81 10 5 2B S 0.04 0 1010 3047 Cloudy 55% cloud 12:00 10.8 79 17 9 3B S 0.14 0 1008 3033 Overcast 97% cloud 15:00 10.4 79 14 7 3B SW 0.08 0 1006 3018 Partly cloudy 24% cloud 18:00 9.6 83 14 8 3B W 0.04 0 1005 2999 Partly cloudy 40% cloud 21:00 8.6 88 28 15 4B NW 1.00 0 1006 2986 Overcast 90% cloud Friday, 06/11 00:00 7.5 83 43 23 6B NW 2.2 0 1009 2940 Overcast 81% cloud 03:00 7.9 72 32 17 5B NW 0.61 0 1008 2911 Partly cloudy 32% cloud 06:00 7.7 80 27 14 4B NW 0.33 0 1009 2724 Cloudy 56% cloud 09:00 5.4 83 33 18 5B NW 0.93 0 1013 2565 Cloudy 71% cloud 12:00 3.3 81 36 20 5B NW 0.61 0 1016 2214 Overcast 92% cloud 15:00 1.4 87 40 22 6B NW 1.7 0 1017 1799 Overcast 96% cloud 18:00 0.1 86 40 22 6B NW 2.0 0.6 1018 1503 Overcast 99% cloud 21:00 -0.3 85 38 21 5B NW 0.87 0.3 1019 1450 Overcast 93% cloud Saturday, 07/11 00:00 -0.6 89 40 22 6B NW 1.0 0.3 1021 1423 Overcast 93% cloud 03:00 -0.9 84 52 28 7B NW 1.8 0.5 1022 1387 Overcast 92% cloud 06:00 -1.4 86 55 30 7B NW 1.4 0.4 1024 1329 Overcast 89% cloud 09:00 -2.1 89 57 31 7B NW 1.5 0.4 1027 1194 Overcast 92% cloud 12:00 -2.7 88 52 28 7B NW 0.58 0.2 1029 1145 Overcast 93% cloud 15:00 -2.9 85 46 25 6B NW 0.18 0.2 1030 1078 Overcast 90% cloud 18:00 -2.8 87 54 29 7B NW 0.31 0.1 1031 1101 Overcast 96% cloud 21:00 -2.9 93 44 24 6B NW 0.57 0.6 1032 1088 Overcast 95% cloud Sunday, 08/11 00:00 -1.9 86 35 19 5B NW 0.53 0.2 1033 1290 Overcast 93% cloud 03:00 -1 85 33 18 5B NW 0.26 0.1 1032 1391 Overcast 93% cloud 06:00 -0.2 72 22 12 4B NW 0.06 0 1031 1460 Overcast 91% cloud 09:00 0.2 66 7 4 2B NW 0 0 1032 1606 Overcast 84% cloud 12:00 0.4 73 7 4 2B SW 0 0 1032 1684 Overcast 90% cloud 15:00 0.9 74 14 8 3B S 0.03 0 1030 1874 Overcast 83% cloud 18:00 1.6 71 12 7 3B SW 0 0 1029 1995 Overcast 96% cloud 21:00 3.3 59 13 7 3B SW 0 0 1027 2231 Overcast 94% cloud Monday, 09/11 00:00 4.6 54 12 7 2B SW 0 0 1026 2335 Overcast 92% cloud 03:00 5.2 58 15 8 3B SW 0.09 0 1022 2357 Cloudy 73% cloud 06:00 4.4 73 10 5 2B NW 0 0 1020 2258 Partly cloudy 38% cloud 09:00 4 77 12 7 3B NW 0 0 1021 2167 Partly cloudy 45% cloud 12:00 2.2 88 33 18 5B NW 1.3 0 1022 1894 Overcast 99% cloud 15:00 -0.7 87 43 23 6B NW 2.2 0.7 1023 1381 Overcast 99% cloud 18:00 -2.5 91 47 25 6B NW 1.4 0.4 1023 1154 Overcast 95% cloud 21:00 -3.2 93 54 29 7B NW 0.79 0.8 1024 1068 Overcast 99% cloud Tuesday, 10/11 00:00 -3 93 51 27 7B NW 1.1 1.1 1025 1144 Overcast 99% cloud 03:00 -2.6 92 46 25 6B NW 1.7 0.5 1025 1191 Overcast 95% cloud 06:00 -3.3 93 35 19 5B NW 1.3 1.3 1025 1109 Overcast 98% cloud 09:00 -3.1 84 32 17 5B NW 0.33 0.3 1027 989 Overcast 88% cloud 12:00 -2.9 64 20 11 4B NW 0.22 0.2 1028 < 922 Cloudy 67% cloud 15:00 -2.7 59 13 7 3B NW 0 0 1028 < 922 Partly cloudy 32% cloud 18:00 -3.1 72 14 8 3B NW 0 0 1028 < 922 Partly cloudy 37% cloud 21:00 -2.9 80 18 9 3B NW 0 0 1029 < 922 Cloudy 60% cloud Wednesday, 11/11 00:00 -2.2 80 18 10 3B NW 0 0 1030 1256 Partly cloudy 49% cloud 03:00 -1.3 75 21 11 4B NW 0.05 0 1029 1375 Cloudy 63% cloud 06:00 -0.5 66 27 15 4B NW 0 0 1029 1442 Clear 12% cloud |
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Forecast table times: UTC.
Coordinates: 36.815654°N, 138.9460795°E · Requested elevation: 1489 m. Model terrain: 920 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.