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.
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 -1.3 67 2 1 1B SE — — 1017 2925 Clear 0% cloud 09:00 -1.1 63 3 2 1B S 0 0 1017 3001 Clear 0% cloud 12:00 -2.1 70 3 2 1B S 0 0 1019 < 2341 Clear 14% cloud 15:00 -1.3 72 4 2 1B S 0 0 1020 < 2341 Partly cloudy 31% cloud 18:00 5.2 53 6 3 1B SW 0 0 1019 2804 Overcast 96% cloud 21:00 5.8 52 9 5 2B SW 0 0 1018 2756 Overcast 97% cloud Friday, 06/11 00:00 1.8 69 2 1 1B S 0 0 1020 2415 Overcast 97% cloud 03:00 -0.1 75 2 1 1B S 0 0 1022 < 2341 Partly cloudy 40% cloud 06:00 -1.8 77 2 1 1B SW 0 0 1023 < 2341 Clear 9% cloud 09:00 -2.4 79 4 2 1B S 0 0 1025 < 2341 Clear 13% cloud 12:00 -2.4 79 4 2 1B S 0 0 1025 < 2341 Partly cloudy 44% cloud 15:00 -1.5 79 5 2 1B S 0 0 1027 < 2341 Cloudy 61% cloud 18:00 4.7 50 6 3 2B SW 0 0 1024 2780 Clear 13% cloud 21:00 6.9 39 7 4 2B SW 0 0 1021 2962 Clear 16% cloud Saturday, 07/11 00:00 1.2 64 4 2 1B S 0 0 1023 < 2341 Cloudy 50% cloud 03:00 -1.2 72 4 2 1B S 0 0 1023 3076 Partly cloudy 43% cloud 06:00 -0.4 65 3 2 1B S 0 0 1024 < 2341 Overcast 81% cloud 09:00 -0.5 68 4 2 1B S 0 0 1023 3022 Cloudy 53% cloud 12:00 -0 69 3 2 1B S 0 0 1024 2820 Partly cloudy 49% cloud 15:00 0.4 70 3 1 1B S 0 0 1025 2688 Partly cloudy 43% cloud 18:00 8.2 45 2 1 1B SW 0 0 1024 3149 Clear 15% cloud 21:00 10.4 38 4 2 1B SW 0 0 1022 3145 Partly cloudy 22% cloud Sunday, 08/11 00:00 4 62 3 2 1B S 0 0 1022 3144 Clear 6% cloud 03:00 0.9 69 3 2 1B SE 0 0 1022 2433 Clear 19% cloud 06:00 0.3 70 4 2 1B SE 0 0 1022 2493 Partly cloudy 40% cloud 09:00 0.6 65 5 3 1B S 0 0 1020 2445 Partly cloudy 32% cloud 12:00 0.8 66 6 3 2B S 0 0 1019 2427 Cloudy 53% cloud 15:00 1.9 66 6 3 2B S 0 0 1020 3114 Cloudy 73% cloud 18:00 9.6 42 9 5 2B S 0 0 1018 3113 Cloudy 63% cloud 21:00 10.5 37 12 6 2B SW 0 0 1017 3110 Cloudy 79% cloud Monday, 09/11 00:00 3.8 62 4 2 1B S 0 0 1019 3109 Overcast 89% cloud 03:00 1.3 69 4 2 1B S 0 0 1020 2467 Overcast 85% cloud 06:00 0 71 2 1 1B S 0 0 1020 < 2341 Overcast 94% cloud 09:00 0.3 77 2 1 1B S 0 0 1021 < 2341 Overcast 97% cloud 12:00 0.5 81 1 1 1B S 0 0 1021 < 2341 Overcast 94% cloud 15:00 1.1 78 0 0 0B S 0.06 0 1022 < 2341 Cloudy 56% cloud 18:00 7.4 52 8 4 2B SW 0.06 0 1021 2932 Partly cloudy 47% cloud 21:00 9.1 43 8 4 2B SW 0 0 1019 3080 Overcast 100% cloud Tuesday, 10/11 00:00 3.2 68 4 2 1B S 0 0 1019 3108 Overcast 99% cloud 03:00 1.8 73 5 3 1B S 0 0 1019 3102 Overcast 97% cloud 06:00 1.3 73 6 3 1B S 0 0 1019 2440 Overcast 83% cloud 09:00 2.5 76 6 3 2B S 0 0 1019 2747 Overcast 97% cloud 12:00 1.4 78 8 4 2B SW 0.11 0 1020 < 2341 Partly cloudy 31% cloud 15:00 1.3 77 7 4 2B S 0 0 1021 < 2341 Clear 4% cloud 18:00 8 50 9 5 2B SW 0 0 1020 3096 Cloudy 59% cloud 21:00 8.7 44 12 6 2B SW 0 0 1018 3104 Cloudy 63% cloud Wednesday, 11/11 00:00 2.9 67 6 3 2B S 0 0 1019 3107 Cloudy 76% cloud 03:00 1.1 75 7 4 2B S 0 0 1020 < 2341 Cloudy 62% cloud 06:00 1.1 78 6 3 2B S 0 0 1021 2727 Overcast 86% cloud |
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Forecast table times: UTC.
Coordinates: 45.2798015°N, -111.3675178°E · Requested elevation: 2078 m. Model terrain: 2339 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.
Source: ECMWF · CC BY 4.0 · Processed by Snow Report.

Big Sky Resort is a downhill ski area in Montana, United States. Mapped terrain includes easy, intermediate, advanced, expert routes. Its mapped lift network extends from approximately 2078 to 3402 metres above sea level.
Data: OpenSkiData / OpenSkiMap, OpenStreetMap contributors (ODbL), Skimap.org, Who's On First, Mapterhorn.
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 -2.1 70 3 2 1B SE — — 1017 2894 Clear 0% cloud 09:00 -1.8 65 3 2 1B S 0 0 1017 2993 Clear 0% cloud 12:00 -2.8 73 4 2 1B S 0 0 1019 < 2331 Clear 14% cloud 15:00 -2.1 75 4 2 1B S 0 0 1020 < 2331 Partly cloudy 30% cloud 18:00 4 57 6 3 2B SW 0 0 1019 2799 Overcast 95% cloud 21:00 4.5 56 9 5 2B SW 0 0 1018 2743 Overcast 98% cloud Friday, 06/11 00:00 0.6 73 2 1 1B S 0 0 1020 2414 Overcast 96% cloud 03:00 -1 78 2 1 1B S 0 0 1022 < 2331 Partly cloudy 41% cloud 06:00 -2.6 81 2 1 1B S 0 0 1023 < 2331 Clear 10% cloud 09:00 -3.2 83 4 2 1B S 0 0 1025 < 2331 Clear 12% cloud 12:00 -3.3 83 4 2 1B S 0 0 1025 < 2331 Partly cloudy 40% cloud 15:00 -2.5 83 5 3 1B S 0 0 1027 < 2331 Cloudy 58% cloud 18:00 3.4 53 6 4 2B SW 0 0 1024 2786 Clear 13% cloud 21:00 5.5 42 7 4 2B SW 0 0 1022 2967 Clear 17% cloud Saturday, 07/11 00:00 0.1 68 4 2 1B S 0 0 1023 < 2331 Partly cloudy 48% cloud 03:00 -2.1 74 4 2 1B S 0 0 1023 3073 Partly cloudy 41% cloud 06:00 -1.1 66 3 2 1B S 0 0 1023 < 2331 Overcast 80% cloud 09:00 -1.2 70 5 2 1B S 0 0 1023 2967 Partly cloudy 48% cloud 12:00 -0.6 72 3 2 1B S 0 0 1023 2697 Partly cloudy 47% cloud 15:00 -0.2 72 3 1 1B S 0 0 1024 2513 Partly cloudy 40% cloud 18:00 7.3 47 2 1 1B SW 0 0 1024 3149 Clear 13% cloud 21:00 9 41 4 2 1B SW 0 0 1022 3145 Partly cloudy 21% cloud Sunday, 08/11 00:00 2.9 65 3 2 1B SE 0 0 1022 3144 Clear 7% cloud 03:00 0.2 71 3 2 1B SE 0 0 1021 3138 Clear 20% cloud 06:00 -0.3 71 5 3 1B SE 0 0 1021 2403 Partly cloudy 38% cloud 09:00 0.1 66 5 3 1B SE 0 0 1020 2336 Partly cloudy 27% cloud 12:00 0.4 67 7 4 2B S 0 0 1019 3113 Cloudy 53% cloud 15:00 1.5 67 7 4 2B S 0 0 1019 3114 Cloudy 76% cloud 18:00 8.5 44 10 6 2B S 0 0 1018 3113 Cloudy 62% cloud 21:00 9.2 40 12 7 3B SW 0 0 1017 3110 Overcast 80% cloud Monday, 09/11 00:00 2.8 64 5 3 1B S 0 0 1019 3109 Overcast 90% cloud 03:00 0.5 70 5 2 1B S 0 0 1019 3110 Overcast 85% cloud 06:00 -0.8 74 2 1 1B SE 0 0 1020 < 2331 Overcast 95% cloud 09:00 -0.6 81 3 1 1B SE 0 0 1021 < 2331 Overcast 98% cloud 12:00 -0.5 87 1 1 1B SE 0 0 1021 < 2331 Overcast 95% cloud 15:00 0.2 82 1 0 0B SE 0.04 0 1022 2333 Cloudy 59% cloud 18:00 6.2 55 8 4 2B SW 0.07 0 1021 2930 Partly cloudy 48% cloud 21:00 7.8 46 8 4 2B SW 0 0 1019 3078 Overcast 100% cloud Tuesday, 10/11 00:00 2.1 72 4 2 1B SE 0 0 1019 3108 Overcast 99% cloud 03:00 1 75 5 3 1B S 0 0 1019 3102 Overcast 96% cloud 06:00 0.6 76 7 4 2B S 0 0 1019 3100 Overcast 84% cloud 09:00 1.6 78 8 4 2B S 0 0 1019 2797 Overcast 96% cloud 12:00 0.6 81 8 4 2B SW 0.08 0 1020 2459 Partly cloudy 33% cloud 15:00 0.5 81 7 4 2B S 0 0 1021 2449 Clear 4% cloud 18:00 6.8 53 10 5 2B SW 0 0 1020 3103 Cloudy 60% cloud 21:00 7.4 47 12 7 3B SW 0 0 1018 3104 Cloudy 61% cloud Wednesday, 11/11 00:00 1.9 69 7 4 2B S 0 0 1019 3086 Cloudy 76% cloud 03:00 0.3 77 7 4 2B S 0 0 1020 2582 Cloudy 61% cloud 06:00 0.4 81 6 3 2B S 0 0 1021 3118 Overcast 87% cloud |
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Forecast table times: UTC.
Coordinates: 45.2861484°N, -111.4021035°E · Requested elevation: 2300 m. Model terrain: 2329 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.
Source: ECMWF · CC BY 4.0 · Processed by Snow Report.
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 -1 42 26 14 4B S — — 1016 2847 Clear 0% cloud 09:00 -1.6 39 30 16 5B SW 0 0 1017 2986 Clear 0% cloud 12:00 -2.6 49 31 17 5B SW 0 0 1018 < 2344 Clear 14% cloud 15:00 -3.4 55 28 15 4B SW 0 0 1019 < 2344 Partly cloudy 29% cloud 18:00 -4.2 71 27 15 4B SW 0 0 1019 2791 Overcast 94% cloud 21:00 -5.5 93 21 11 4B SW 0 0 1018 2727 Overcast 98% cloud Friday, 06/11 00:00 -5.4 91 17 9 3B SW 0 0 1020 2411 Overcast 95% cloud 03:00 -6 92 15 8 3B W 0 0 1022 < 2344 Partly cloudy 41% cloud 06:00 -6.1 91 20 11 3B W 0 0 1022 < 2344 Clear 12% cloud 09:00 -6.6 86 33 18 5B W 0 0 1025 < 2344 Clear 11% cloud 12:00 -5.5 64 23 13 4B W 0 0 1024 < 2344 Partly cloudy 36% cloud 15:00 -5.1 57 24 13 4B W 0 0 1027 < 2344 Cloudy 57% cloud 18:00 -3.9 45 24 13 4B W 0 0 1024 2785 Clear 13% cloud 21:00 -2.8 45 28 15 4B W 0 0 1022 2969 Clear 18% cloud Saturday, 07/11 00:00 -2.2 51 30 16 5B W 0 0 1023 < 2344 Partly cloudy 46% cloud 03:00 -1.5 61 33 18 5B W 0 0 1023 3083 Partly cloudy 38% cloud 06:00 -1.7 77 34 18 5B W 0 0 1023 < 2344 Cloudy 79% cloud 09:00 -1.2 73 30 16 5B W 0 0 1023 2882 Partly cloudy 41% cloud 12:00 -0.6 63 31 17 5B W 0 0 1023 3131 Partly cloudy 43% cloud 15:00 -0.1 50 24 13 4B W 0 0 1024 3139 Partly cloudy 35% cloud 18:00 -0.3 53 11 6 2B W 0 0 1024 3149 Clear 12% cloud 21:00 0.1 56 16 8 3B W 0 0 1022 3145 Partly cloudy 21% cloud Sunday, 08/11 00:00 0.8 55 21 12 4B W 0 0 1022 3144 Clear 7% cloud 03:00 2.5 39 24 13 4B SW 0 0 1021 3138 Clear 20% cloud 06:00 3.3 33 30 16 5B SW 0 0 1021 3136 Partly cloudy 34% cloud 09:00 3.7 30 50 27 7B SW 0 0 1019 3126 Clear 20% cloud 12:00 3.7 30 57 31 7B SW 0 0 1018 3113 Partly cloudy 49% cloud 15:00 2.7 40 55 30 7B SW 0 0 1019 3114 Overcast 81% cloud 18:00 1.5 45 55 29 7B SW 0 0 1019 3114 Cloudy 62% cloud 21:00 0.2 49 50 27 7B SW 0 0 1018 3110 Overcast 81% cloud Monday, 09/11 00:00 -0.3 55 44 24 6B W 0 0 1019 3109 Overcast 90% cloud 03:00 -1.2 65 33 18 5B SW 0 0 1019 3110 Overcast 85% cloud 06:00 -1.8 72 34 18 5B SW 0 0 1020 < 2344 Overcast 96% cloud 09:00 -2.8 84 30 16 5B SW 0 0 1021 < 2344 Overcast 99% cloud 12:00 -3.2 84 34 19 5B SW 0 0 1021 < 2344 Overcast 96% cloud 15:00 -3.7 86 32 17 5B W 0.02 0 1022 2441 Cloudy 61% cloud 18:00 -3.5 79 31 16 5B SW 0.09 0.1 1021 2929 Cloudy 51% cloud 21:00 -2 74 24 13 4B SW 0 0 1019 3078 Overcast 100% cloud Tuesday, 10/11 00:00 -1.2 57 34 19 5B SW 0 0 1019 3109 Overcast 99% cloud 03:00 -0.7 54 40 22 6B SW 0 0 1019 3102 Overcast 95% cloud 06:00 -0.8 54 54 29 7B SW 0 0 1019 3100 Overcast 88% cloud 09:00 -2.7 75 49 27 6B W 0 0 1019 2826 Overcast 96% cloud 12:00 -3.8 87 43 23 6B W 0.04 0 1020 2530 Partly cloudy 36% cloud 15:00 -3.4 76 34 18 5B W 0 0 1021 2582 Clear 4% cloud 18:00 -1.7 53 38 21 5B SW 0 0 1020 3106 Cloudy 61% cloud 21:00 -1.1 45 55 30 7B SW 0 0 1019 3104 Cloudy 59% cloud Wednesday, 11/11 00:00 -1.8 64 51 27 7B W 0 0 1019 3056 Cloudy 78% cloud 03:00 -2.1 79 44 24 6B W 0 0 1020 2779 Cloudy 59% cloud 06:00 -1.3 75 37 20 5B W 0 0 1021 3118 Overcast 89% cloud |
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Forecast table times: UTC.
Coordinates: 45.2782832°N, -111.4505601°E · Requested elevation: 3402 m. Model terrain: 2342 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.