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 16.8 67 2 1 1B NW — — 1010 3050 Partly cloudy 25% cloud 09:00 12.8 83 2 1 1B S 0.02 0 1009 3042 Overcast 95% cloud 12:00 12.3 87 4 2 1B SW 0.65 0 1007 3026 Overcast 92% cloud 15:00 12.1 84 4 2 1B SW 0.09 0 1006 3013 Overcast 85% cloud 18:00 11.5 89 3 2 1B W 1.9 0 1005 2998 Overcast 88% cloud 21:00 10.9 96 6 3 2B NW 5.1 0 1008 2862 Overcast 99% cloud Friday, 06/11 00:00 13 91 6 3 2B NW 2.1 0 1009 2786 Partly cloudy 50% cloud 03:00 15.9 57 9 5 2B W 1.3 0 1008 2770 Cloudy 50% cloud 06:00 13.9 66 12 7 3B W 0.58 0 1010 2703 Partly cloudy 46% cloud 09:00 9.5 82 10 6 2B W 0.23 0 1014 2451 Partly cloudy 36% cloud 12:00 7.4 93 8 4 2B NW 0.61 0 1017 1981 Overcast 86% cloud 15:00 6 95 9 5 2B NW 4.3 0 1019 1611 Overcast 99% cloud 18:00 4.9 96 7 4 2B NW 4.3 0 1019 1457 Overcast 96% cloud 21:00 4.7 91 8 4 2B W 1.2 0 1019 1526 Cloudy 74% cloud Saturday, 07/11 00:00 5.1 92 10 6 2B NW 2.7 0 1023 1382 Overcast 99% cloud 03:00 5.3 86 9 5 2B NW 4.4 0 1024 1333 Overcast 87% cloud 06:00 4.8 83 10 5 2B NW 3.3 0 1025 1289 Cloudy 76% cloud 09:00 3.4 90 8 4 2B NW 2.1 0 1028 1174 Cloudy 76% cloud 12:00 2.7 88 7 4 2B W 0.90 0 1030 1109 Cloudy 72% cloud 15:00 2.5 84 7 4 2B W 0.16 0 1031 1107 Cloudy 76% cloud 18:00 3 88 8 4 2B NW 0.37 0 1032 1110 Overcast 82% cloud 21:00 3.2 89 5 3 1B NW 0.38 0 1033 1107 Overcast 83% cloud Sunday, 08/11 00:00 5.3 76 7 4 2B NW 0.14 0 1034 1275 Overcast 81% cloud 03:00 7.3 59 11 6 2B N 0.05 0 1033 1378 Overcast 83% cloud 06:00 6.5 62 9 5 2B N 0.02 0 1032 1389 Cloudy 76% cloud 09:00 4.4 75 4 2 1B N 0 0 1032 1432 Overcast 84% cloud 12:00 4.2 75 2 1 1B W 0 0 1032 1558 Overcast 86% cloud 15:00 3.9 75 3 2 1B SW 0.05 0 1030 2059 Overcast 89% cloud 18:00 4 77 3 2 1B SW 0.02 0 1028 2104 Overcast 99% cloud 21:00 4.4 80 4 2 1B SW 0.18 0 1026 2215 Overcast 96% cloud Monday, 09/11 00:00 8.6 70 5 3 1B SW 0.07 0 1025 2314 Overcast 85% cloud 03:00 11.6 58 3 2 1B NW 0 0 1021 2305 Partly cloudy 40% cloud 06:00 11 66 5 3 1B NW 0.05 0 1020 2248 Cloudy 61% cloud 09:00 7.4 90 8 4 2B NW 0.59 0 1021 2155 Overcast 84% cloud 12:00 5.7 98 12 7 3B N 6.6 0 1024 1566 Overcast 99% cloud 15:00 4.4 96 8 4 2B NW 2.8 0 1024 1288 Overcast 98% cloud 18:00 3.4 94 8 4 2B NW 1.4 0 1025 1135 Overcast 90% cloud 21:00 2.9 93 7 4 2B NW 0.47 0 1026 1082 Overcast 89% cloud Tuesday, 10/11 00:00 4.1 84 8 5 2B NW 0.76 0 1027 1167 Cloudy 71% cloud 03:00 4.4 83 11 6 2B N 2.1 0 1026 1205 Overcast 89% cloud 06:00 3.3 87 10 5 2B N 2.2 0 1027 1081 Overcast 91% cloud 09:00 2.4 92 6 3 2B N 0.33 0 1028 1014 Overcast 90% cloud 12:00 1.9 91 3 2 1B N 0.03 0 1028 1005 Cloudy 75% cloud 15:00 1.4 90 2 1 1B W 0.04 0 1028 930 Cloudy 72% cloud 18:00 0.7 87 2 1 1B W 0 0 1028 826 Cloudy 73% cloud 21:00 0.5 86 2 1 1B SW 0 0 1029 800 Cloudy 60% cloud Wednesday, 11/11 00:00 5.1 67 4 2 1B NW 0.07 0 1030 1237 Cloudy 57% cloud 03:00 7.7 55 8 4 2B N 0 0 1029 1400 Partly cloudy 28% cloud 06:00 7.4 55 9 5 2B N 0 0 1029 1497 Clear 11% cloud |
|---|
Forecast table times: UTC.
Coordinates: 36.8983482°N, 138.1826548°E · Requested elevation: 685 m. Model terrain: 583 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.

Akakura Onsen Ski Area is a downhill ski area in Niigata Prefecture, Japan. Mapped terrain includes easy, intermediate, advanced routes. Its mapped lift network extends from approximately 685 to 1149 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 16.5 68 2 1 1B W — — 1010 3050 Partly cloudy 26% cloud 09:00 12.7 83 3 1 1B S 0.03 0 1009 3042 Overcast 95% cloud 12:00 12.2 87 5 3 1B SW 0.65 0 1007 3026 Overcast 92% cloud 15:00 12 84 5 3 1B SW 0.09 0 1006 3013 Overcast 85% cloud 18:00 11.4 89 4 2 1B W 1.9 0 1005 2998 Overcast 88% cloud 21:00 10.8 96 8 4 2B NW 5.1 0 1008 2861 Overcast 99% cloud Friday, 06/11 00:00 12.7 91 8 4 2B NW 2.1 0 1009 2786 Partly cloudy 49% cloud 03:00 15.4 57 11 6 2B W 1.2 0 1008 2770 Cloudy 50% cloud 06:00 13.5 67 14 7 3B W 0.58 0 1010 2701 Partly cloudy 47% cloud 09:00 9.2 82 12 6 2B W 0.23 0 1014 2450 Partly cloudy 37% cloud 12:00 7.1 93 9 5 2B NW 0.62 0 1017 1981 Overcast 86% cloud 15:00 5.7 95 10 5 2B NW 4.4 0 1019 1610 Overcast 99% cloud 18:00 4.6 96 9 5 2B NW 4.3 0 1019 1457 Overcast 96% cloud 21:00 4.5 91 9 5 2B W 1.2 0 1019 1525 Cloudy 75% cloud Saturday, 07/11 00:00 4.8 92 11 6 2B NW 2.8 0 1023 1381 Overcast 99% cloud 03:00 4.9 86 11 6 2B NW 4.5 0 1024 1333 Overcast 87% cloud 06:00 4.4 84 12 6 2B NW 3.3 0 1025 1289 Cloudy 76% cloud 09:00 3 90 9 5 2B NW 2.1 0 1028 1174 Cloudy 76% cloud 12:00 2.4 89 8 5 2B W 0.91 0 1030 1109 Cloudy 72% cloud 15:00 2.2 84 8 4 2B W 0.17 0 1031 1107 Cloudy 76% cloud 18:00 2.7 88 9 5 2B NW 0.37 0 1032 1109 Overcast 83% cloud 21:00 2.8 89 6 3 2B NW 0.39 0 1033 1107 Overcast 83% cloud Sunday, 08/11 00:00 4.8 77 8 4 2B NW 0.15 0 1034 1275 Overcast 81% cloud 03:00 6.8 60 11 6 2B N 0.05 0 1033 1379 Overcast 83% cloud 06:00 6.1 63 9 5 2B N 0.02 0 1032 1390 Cloudy 76% cloud 09:00 4.1 75 4 2 1B N 0 0 1032 1431 Overcast 85% cloud 12:00 4 75 2 1 1B W 0 0 1032 1558 Overcast 86% cloud 15:00 3.8 75 4 2 1B SW 0.05 0 1030 2059 Overcast 89% cloud 18:00 4 77 4 2 1B SW 0.02 0 1028 2104 Overcast 99% cloud 21:00 4.4 79 4 2 1B SW 0.18 0 1026 2215 Overcast 97% cloud Monday, 09/11 00:00 8.4 70 6 3 2B SW 0.07 0 1025 2313 Overcast 85% cloud 03:00 11.3 58 4 2 1B W 0 0 1021 2305 Partly cloudy 40% cloud 06:00 10.7 66 5 3 1B NW 0.05 0 1020 2248 Cloudy 62% cloud 09:00 7.2 90 9 5 2B NW 0.60 0 1021 2155 Overcast 84% cloud 12:00 5.4 98 13 7 3B N 6.7 0 1024 1565 Overcast 99% cloud 15:00 4.1 96 9 5 2B NW 2.8 0 1024 1289 Overcast 98% cloud 18:00 3 94 9 5 2B NW 1.4 0 1025 1135 Overcast 90% cloud 21:00 2.6 93 8 4 2B NW 0.47 0 1026 1082 Overcast 89% cloud Tuesday, 10/11 00:00 3.7 85 9 5 2B NW 0.77 0 1027 1167 Cloudy 71% cloud 03:00 4 84 12 6 2B N 2.1 0 1026 1205 Overcast 89% cloud 06:00 2.9 87 10 5 2B N 2.2 0 1027 1081 Overcast 91% cloud 09:00 2.1 92 6 3 2B N 0.33 0 1028 1013 Overcast 90% cloud 12:00 1.6 90 3 2 1B N 0.03 0 1028 1004 Cloudy 76% cloud 15:00 1.1 89 2 1 1B W 0.04 0 1028 928 Cloudy 72% cloud 18:00 0.4 87 2 1 1B W 0 0 1028 823 Cloudy 73% cloud 21:00 0.3 86 2 1 1B W 0 0 1029 794 Cloudy 60% cloud Wednesday, 11/11 00:00 4.7 68 4 2 1B NW 0.07 0 1030 1237 Cloudy 58% cloud 03:00 7.2 55 8 4 2B N 0 0 1029 1402 Partly cloudy 28% cloud 06:00 7 55 9 5 2B N 0 0 1029 1498 Clear 11% cloud |
|---|
Forecast table times: UTC.
Coordinates: 36.8986472°N, 138.1783999°E · Requested elevation: 731 m. Model terrain: 589 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.
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 13.3 72 8 4 2B SW — — 1010 3050 Partly cloudy 26% cloud 09:00 11.7 81 7 4 2B S 0.03 0 1009 3042 Overcast 95% cloud 12:00 11.4 81 14 7 3B S 0.67 0 1007 3026 Overcast 91% cloud 15:00 11.3 81 14 7 3B SW 0.11 0 1006 3013 Overcast 85% cloud 18:00 10.1 91 13 7 3B SW 1.9 0 1005 2998 Overcast 87% cloud 21:00 9.2 95 21 11 4B NW 5.2 0 1008 2862 Overcast 99% cloud Friday, 06/11 00:00 9.6 89 22 12 4B W 2.1 0 1009 2792 Partly cloudy 47% cloud 03:00 11.4 64 24 13 4B W 1.1 0 1008 2774 Cloudy 51% cloud 06:00 9.9 72 29 16 5B W 0.59 0 1010 2698 Partly cloudy 49% cloud 09:00 6.9 80 26 14 4B W 0.26 0 1014 2450 Partly cloudy 40% cloud 12:00 4.7 91 19 10 3B W 0.67 0 1017 1982 Overcast 86% cloud 15:00 2.9 94 19 10 3B NW 4.5 0 1019 1611 Overcast 99% cloud 18:00 2 94 21 12 4B W 4.3 0 1019 1458 Overcast 96% cloud 21:00 2.1 85 27 14 4B W 1.2 0 1019 1525 Cloudy 76% cloud Saturday, 07/11 00:00 1.7 93 24 13 4B W 2.8 0 1023 1381 Overcast 99% cloud 03:00 1.5 89 26 14 4B W 4.4 0 1024 1336 Overcast 86% cloud 06:00 1.1 86 28 15 4B W 3.4 1.4 1025 1291 Cloudy 75% cloud 09:00 0.2 91 23 13 4B W 2.2 0.7 1028 1175 Cloudy 76% cloud 12:00 -0.3 89 20 11 4B W 0.93 0.3 1030 1109 Cloudy 70% cloud 15:00 -0.3 85 20 11 4B W 0.17 0 1031 1108 Cloudy 76% cloud 18:00 -0.3 91 20 11 3B NW 0.39 0.1 1032 1110 Overcast 83% cloud 21:00 -0.3 94 15 8 3B NW 0.41 0.1 1033 1108 Overcast 84% cloud Sunday, 08/11 00:00 1.1 84 13 7 3B NW 0.17 0 1034 1278 Overcast 81% cloud 03:00 2.5 72 13 7 3B NW 0.04 0 1033 1385 Overcast 82% cloud 06:00 2.3 73 10 5 2B N 0.03 0 1032 1394 Cloudy 76% cloud 09:00 1.6 80 5 3 1B N 0 0 1032 1428 Overcast 86% cloud 12:00 1.9 77 3 2 1B SW 0 0 1032 1563 Overcast 86% cloud 15:00 2.9 71 10 6 2B SW 0.04 0 1030 2060 Overcast 90% cloud 18:00 3.3 71 10 5 2B SW 0.03 0 1028 2106 Overcast 99% cloud 21:00 4.2 69 12 7 2B SW 0.19 0 1026 2214 Overcast 97% cloud Monday, 09/11 00:00 6.7 65 15 8 3B SW 0.09 0 1025 2313 Overcast 84% cloud 03:00 8.2 60 12 7 3B SW 0 0 1021 2307 Partly cloudy 38% cloud 06:00 7.6 69 12 7 2B W 0.04 0 1020 2248 Cloudy 62% cloud 09:00 5.4 89 19 10 3B W 0.63 0 1021 2158 Overcast 84% cloud 12:00 2.7 97 22 12 4B NW 6.9 0 1024 1567 Overcast 99% cloud 15:00 1 96 18 10 3B NW 2.8 0.8 1025 1294 Overcast 98% cloud 18:00 -0.1 96 18 10 3B NW 1.4 0.4 1025 1139 Overcast 90% cloud 21:00 -0.5 96 18 10 3B NW 0.50 0.2 1026 1085 Overcast 89% cloud Tuesday, 10/11 00:00 0.2 90 18 10 3B NW 0.79 0.2 1027 1169 Cloudy 73% cloud 03:00 0.5 89 19 10 3B NW 2.1 0.6 1026 1212 Overcast 89% cloud 06:00 -0.5 93 14 8 3B NW 2.2 0.7 1027 1086 Overcast 91% cloud 09:00 -1 92 10 5 2B NW 0.34 0.1 1028 1011 Overcast 91% cloud 12:00 -0.9 82 8 4 2B NW 0.04 0 1028 995 Cloudy 79% cloud 15:00 -1.3 86 6 3 2B NW 0.05 0 1028 918 Cloudy 75% cloud 18:00 -1.6 88 7 4 2B NW 0 0 1028 808 Cloudy 74% cloud 21:00 -1.6 88 7 4 2B NW 0 0 1029 765 Cloudy 61% cloud Wednesday, 11/11 00:00 0.8 78 8 4 2B NW 0.06 0 1030 1241 Cloudy 58% cloud 03:00 2.8 64 10 5 2B NW 0 0 1029 1413 Partly cloudy 26% cloud 06:00 3.3 58 11 6 2B N 0 0 1029 1508 Clear 10% cloud |
|---|
Forecast table times: UTC.
Coordinates: 36.8962213°N, 138.1566832°E · Requested elevation: 1149 m. Model terrain: 623 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.