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 16.4 62 1 0 0B SW — — 1010 3049 Partly cloudy 45% cloud 09:00 12.7 77 2 1 1B S 0.14 0 1010 3043 Overcast 97% cloud 12:00 12.1 79 2 1 1B SW 1.1 0 1008 3027 Cloudy 57% cloud 15:00 12.3 77 2 1 1B W 0.82 0 1007 3014 Overcast 89% cloud 18:00 11.8 79 3 1 1B W 2.6 0 1006 3000 Overcast 88% cloud 21:00 11.1 83 6 3 2B NW 3.3 0 1008 2891 Overcast 95% cloud Friday, 06/11 00:00 11.7 82 5 3 1B NW 1.8 0 1010 2810 Cloudy 73% cloud 03:00 13.9 52 8 4 2B W 0.61 0 1010 2818 Cloudy 66% cloud 06:00 11.6 68 8 4 2B NW 2.1 0 1011 2639 Overcast 85% cloud 09:00 8.8 75 7 4 2B NW 1.5 0 1015 2452 Overcast 87% cloud 12:00 7 77 5 2 1B NW 0.97 0 1017 2030 Overcast 88% cloud 15:00 5.4 79 6 3 2B NW 2.4 0 1018 1694 Overcast 98% cloud 18:00 3.8 80 5 3 1B NW 2.9 0 1019 1434 Overcast 99% cloud 21:00 3.2 77 5 2 1B NW 1.1 0 1021 < 1385 Overcast 94% cloud Saturday, 07/11 00:00 3.6 75 7 4 2B NW 3.1 0 1024 1397 Overcast 98% cloud 03:00 4.5 66 8 4 2B NW 2.4 0 1024 1530 Overcast 88% cloud 06:00 3.6 64 9 5 2B NW 1.7 0 1026 1399 Overcast 85% cloud 09:00 1.5 72 6 3 1B NW 1.2 0 1030 < 1385 Cloudy 77% cloud 12:00 0.4 70 5 3 1B NW 0.13 0 1031 < 1385 Cloudy 76% cloud 15:00 -0.6 69 6 3 1B NW 0.06 0 1033 < 1385 Cloudy 75% cloud 18:00 -0 72 5 3 1B NW 0.18 0 1033 < 1385 Overcast 92% cloud 21:00 0.2 74 4 2 1B NW 0.11 0 1034 < 1385 Overcast 93% cloud Sunday, 08/11 00:00 3.7 59 3 1 1B NW 0.05 0 1035 1533 Cloudy 64% cloud 03:00 7.1 47 4 2 1B N 0 0 1032 2480 Cloudy 50% cloud 06:00 6 59 4 2 1B N 0 0 1031 2346 Cloudy 67% cloud 09:00 2.4 74 1 1 1B N 0 0 1032 < 1385 Overcast 92% cloud 12:00 2.3 72 2 1 1B SE 0 0 1032 < 1385 Overcast 84% cloud 15:00 2.9 68 1 1 1B S 0 0 1029 < 1385 Overcast 96% cloud 18:00 3.4 65 1 0 0B S 0.07 0 1027 < 1385 Overcast 100% cloud 21:00 4.8 62 1 1 1B S 0.17 0 1025 1717 Overcast 97% cloud Monday, 09/11 00:00 8.9 60 3 2 1B SW 0.29 0 1024 2260 Overcast 90% cloud 03:00 11.8 48 3 2 1B SW 0.03 0 1021 2444 Partly cloudy 23% cloud 06:00 10.7 54 2 1 1B W 0 0 1020 2360 Cloudy 64% cloud 09:00 6.8 75 4 2 1B NW 0.25 0 1021 2053 Overcast 84% cloud 12:00 4.7 82 6 3 2B NW 4.2 0 1024 1650 Overcast 97% cloud 15:00 3.2 82 5 3 1B NW 2.4 0 1025 < 1385 Overcast 97% cloud 18:00 2 78 6 3 2B NW 0.45 0 1025 < 1385 Overcast 88% cloud 21:00 1 77 5 3 1B NW 0.10 0 1026 < 1385 Overcast 87% cloud Tuesday, 10/11 00:00 2.8 67 5 3 1B NW 0.12 0 1028 < 1385 Cloudy 78% cloud 03:00 5 56 8 4 2B NW 0.18 0 1025 1644 Cloudy 67% cloud 06:00 3.4 65 6 3 2B N 0.30 0 1026 < 1385 Cloudy 60% cloud 09:00 -0.2 77 3 2 1B N 0 0 1028 < 1385 Overcast 87% cloud 12:00 -2.5 74 3 1 1B NW 0.09 0 1028 < 1385 Cloudy 65% cloud 15:00 -3.3 71 1 1 1B NW 0 0 1028 < 1385 Partly cloudy 43% cloud 18:00 -3.2 67 2 1 1B N 0 0 1028 < 1385 Partly cloudy 36% cloud 21:00 -2.8 64 2 1 1B N 0 0 1029 < 1385 Partly cloudy 22% cloud Wednesday, 11/11 00:00 4.3 50 2 1 1B N 0 0 1030 1564 Clear 7% cloud 03:00 7.4 45 5 3 1B N 0 0 1029 2013 Clear 5% cloud 06:00 7.1 47 5 3 1B N 0 0 1029 2022 Clear 0% cloud |
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Forecast table times: UTC.
Coordinates: 36.7170511°N, 137.8586213°E · Requested elevation: 746 m. Model terrain: 1383 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.

Hakuba Iwatake is a downhill ski area in Nagano Prefecture, Japan. Mapped terrain includes easy, intermediate, advanced routes. Its mapped lift network extends from approximately 746 to 1283 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 16.4 62 1 0 0B SW — — 1010 3049 Partly cloudy 45% cloud 09:00 12.7 77 2 1 1B S 0.14 0 1010 3043 Overcast 97% cloud 12:00 12.1 79 2 1 1B SW 1.1 0 1008 3027 Cloudy 57% cloud 15:00 12.3 77 2 1 1B W 0.82 0 1007 3014 Overcast 89% cloud 18:00 11.8 79 3 1 1B W 2.6 0 1006 3000 Overcast 88% cloud 21:00 11.1 83 6 3 2B NW 3.3 0 1008 2891 Overcast 95% cloud Friday, 06/11 00:00 11.7 82 5 3 1B NW 1.8 0 1010 2810 Cloudy 73% cloud 03:00 13.9 52 8 4 2B W 0.61 0 1010 2818 Cloudy 66% cloud 06:00 11.6 68 8 4 2B NW 2.1 0 1011 2639 Overcast 85% cloud 09:00 8.8 75 7 4 2B NW 1.5 0 1015 2452 Overcast 87% cloud 12:00 7 77 5 2 1B NW 0.97 0 1017 2030 Overcast 88% cloud 15:00 5.4 79 6 3 2B NW 2.4 0 1018 1694 Overcast 98% cloud 18:00 3.8 80 5 3 1B NW 2.9 0 1019 1434 Overcast 99% cloud 21:00 3.2 77 5 2 1B NW 1.1 0 1021 < 1385 Overcast 94% cloud Saturday, 07/11 00:00 3.6 75 7 4 2B NW 3.1 0 1024 1397 Overcast 98% cloud 03:00 4.5 66 8 4 2B NW 2.4 0 1024 1530 Overcast 88% cloud 06:00 3.6 64 9 5 2B NW 1.7 0 1026 1399 Overcast 85% cloud 09:00 1.5 72 6 3 1B NW 1.2 0 1030 < 1385 Cloudy 77% cloud 12:00 0.4 70 5 3 1B NW 0.13 0 1031 < 1385 Cloudy 76% cloud 15:00 -0.6 69 6 3 1B NW 0.06 0 1033 < 1385 Cloudy 75% cloud 18:00 -0 72 5 3 1B NW 0.18 0 1033 < 1385 Overcast 92% cloud 21:00 0.2 74 4 2 1B NW 0.11 0 1034 < 1385 Overcast 93% cloud Sunday, 08/11 00:00 3.7 59 3 1 1B NW 0.05 0 1035 1533 Cloudy 64% cloud 03:00 7.1 47 4 2 1B N 0 0 1032 2480 Cloudy 50% cloud 06:00 6 59 4 2 1B N 0 0 1031 2346 Cloudy 67% cloud 09:00 2.4 74 1 1 1B N 0 0 1032 < 1385 Overcast 92% cloud 12:00 2.3 72 2 1 1B SE 0 0 1032 < 1385 Overcast 84% cloud 15:00 2.9 68 1 1 1B S 0 0 1029 < 1385 Overcast 96% cloud 18:00 3.4 65 1 0 0B S 0.07 0 1027 < 1385 Overcast 100% cloud 21:00 4.8 62 1 1 1B S 0.17 0 1025 1717 Overcast 97% cloud Monday, 09/11 00:00 8.9 60 3 2 1B SW 0.29 0 1024 2260 Overcast 90% cloud 03:00 11.8 48 3 2 1B SW 0.03 0 1021 2444 Partly cloudy 23% cloud 06:00 10.7 54 2 1 1B W 0 0 1020 2360 Cloudy 64% cloud 09:00 6.8 75 4 2 1B NW 0.25 0 1021 2053 Overcast 84% cloud 12:00 4.7 82 6 3 2B NW 4.2 0 1024 1650 Overcast 97% cloud 15:00 3.2 82 5 3 1B NW 2.4 0 1025 < 1385 Overcast 97% cloud 18:00 2 78 6 3 2B NW 0.45 0 1025 < 1385 Overcast 88% cloud 21:00 1 77 5 3 1B NW 0.10 0 1026 < 1385 Overcast 87% cloud Tuesday, 10/11 00:00 2.8 67 5 3 1B NW 0.12 0 1028 < 1385 Cloudy 78% cloud 03:00 5 56 8 4 2B NW 0.18 0 1025 1644 Cloudy 67% cloud 06:00 3.4 65 6 3 2B N 0.30 0 1026 < 1385 Cloudy 60% cloud 09:00 -0.2 77 3 2 1B N 0 0 1028 < 1385 Overcast 87% cloud 12:00 -2.5 74 3 1 1B NW 0.09 0 1028 < 1385 Cloudy 65% cloud 15:00 -3.3 71 1 1 1B NW 0 0 1028 < 1385 Partly cloudy 43% cloud 18:00 -3.2 67 2 1 1B N 0 0 1028 < 1385 Partly cloudy 36% cloud 21:00 -2.8 64 2 1 1B N 0 0 1029 < 1385 Partly cloudy 22% cloud Wednesday, 11/11 00:00 4.3 50 2 1 1B N 0 0 1030 1564 Clear 7% cloud 03:00 7.4 45 5 3 1B N 0 0 1029 2013 Clear 5% cloud 06:00 7.1 47 5 3 1B N 0 0 1029 2022 Clear 0% cloud |
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Forecast table times: UTC.
Coordinates: 36.7170511°N, 137.8586213°E · Requested elevation: 746 m. Model terrain: 1383 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 13.6 69 1 0 0B W — — 1010 3049 Partly cloudy 47% cloud 09:00 9.8 87 2 1 1B S 0.16 0 1010 3043 Overcast 98% cloud 12:00 9.1 89 2 1 1B S 1.1 0 1008 3027 Cloudy 53% cloud 15:00 9.3 87 2 1 1B W 0.87 0 1007 3013 Overcast 90% cloud 18:00 8.9 90 3 2 1B W 2.8 0 1006 3000 Overcast 89% cloud 21:00 8.1 94 6 3 2B NW 3.7 0 1008 2878 Overcast 96% cloud Friday, 06/11 00:00 8.6 94 6 3 2B NW 2.0 0 1011 2786 Cloudy 77% cloud 03:00 10.5 62 8 4 2B W 0.70 0 1010 2789 Cloudy 67% cloud 06:00 8.2 80 8 4 2B NW 2.4 0 1012 2601 Overcast 88% cloud 09:00 5.5 87 7 4 2B NW 1.7 0 1015 2388 Overcast 90% cloud 12:00 3.8 89 5 3 1B NW 1.1 0 1017 1988 Overcast 91% cloud 15:00 2.2 90 6 3 2B NW 2.8 0 1019 1667 Overcast 99% cloud 18:00 0.6 92 5 3 1B NW 3.3 1.3 1020 < 1431 Overcast 99% cloud 21:00 0 88 5 3 1B NW 1.3 0.4 1021 < 1431 Overcast 95% cloud Saturday, 07/11 00:00 0.3 87 7 4 2B NW 3.4 1.4 1024 < 1431 Overcast 99% cloud 03:00 1.1 78 8 4 2B NW 2.7 0.8 1025 1473 Overcast 91% cloud 06:00 0.1 77 9 5 2B NW 1.9 0.6 1026 < 1431 Overcast 88% cloud 09:00 -1.8 84 6 3 2B NW 1.3 0.4 1030 < 1431 Overcast 81% cloud 12:00 -2.8 82 5 3 1B NW 0.15 0 1032 < 1431 Cloudy 79% cloud 15:00 -3.9 81 5 3 1B NW 0.07 0.1 1034 < 1431 Cloudy 78% cloud 18:00 -3.2 83 5 3 1B NW 0.21 0.2 1034 < 1431 Overcast 93% cloud 21:00 -2.9 85 4 2 1B NW 0.12 0.1 1035 < 1431 Overcast 94% cloud Sunday, 08/11 00:00 0.5 68 3 1 1B NW 0.04 0 1035 < 1431 Cloudy 63% cloud 03:00 3.9 54 4 2 1B N 0 0 1032 2421 Partly cloudy 47% cloud 06:00 2.8 69 3 2 1B N 0 0 1031 2277 Cloudy 65% cloud 09:00 -0.8 86 1 1 1B N 0 0 1032 < 1431 Overcast 94% cloud 12:00 -0.9 84 2 1 1B S 0 0 1032 < 1431 Overcast 86% cloud 15:00 -0.2 78 2 1 1B S 0 0 1029 < 1431 Overcast 97% cloud 18:00 0.3 73 1 1 1B S 0.08 0 1027 < 1431 Overcast 100% cloud 21:00 1.8 71 2 1 1B S 0.18 0 1025 1699 Overcast 97% cloud Monday, 09/11 00:00 6 67 3 2 1B SW 0.31 0 1024 2262 Overcast 90% cloud 03:00 8.6 55 3 2 1B SW 0.02 0 1021 2432 Partly cloudy 23% cloud 06:00 7.3 63 3 1 1B W 0 0 1020 2333 Cloudy 67% cloud 09:00 3.7 86 4 2 1B NW 0.29 0 1022 2019 Overcast 87% cloud 12:00 1.6 94 6 3 1B NW 4.7 0 1025 1602 Overcast 98% cloud 15:00 0 93 5 3 1B NW 2.7 0.8 1025 < 1431 Overcast 98% cloud 18:00 -1 90 6 3 2B NW 0.49 0.1 1026 < 1431 Overcast 90% cloud 21:00 -2.1 89 5 3 1B NW 0.08 0 1027 < 1431 Overcast 89% cloud Tuesday, 10/11 00:00 -0.4 78 5 3 1B NW 0.12 0 1028 < 1431 Overcast 81% cloud 03:00 1.8 66 8 4 2B NW 0.16 0 1026 1599 Cloudy 69% cloud 06:00 0.2 76 6 3 2B NW 0.30 0.1 1026 < 1431 Cloudy 59% cloud 09:00 -3.4 89 3 1 1B N 0 0 1028 < 1431 Overcast 90% cloud 12:00 -5.8 85 3 1 1B NW 0.08 0.1 1028 < 1431 Cloudy 63% cloud 15:00 -6.8 82 1 1 1B NW 0 0 1028 < 1431 Partly cloudy 38% cloud 18:00 -6.6 77 1 1 1B NW 0 0 1028 < 1431 Partly cloudy 30% cloud 21:00 -6.1 73 1 1 1B N 0 0 1029 < 1431 Clear 18% cloud Wednesday, 11/11 00:00 1.3 57 2 1 1B N 0 0 1030 1548 Clear 6% cloud 03:00 4.3 51 5 3 1B N 0 0 1029 2001 Clear 5% cloud 06:00 4 55 5 2 1B N 0 0 1029 1997 Clear 0% cloud |
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Forecast table times: UTC.
Coordinates: 36.7292989°N, 137.8402053°E · Requested elevation: 1283 m. Model terrain: 1428 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.