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 -0.5 85 3 2 1B E — — 1020 2826 Overcast 86% cloud 09:00 0.3 77 5 3 1B E 0.03 0 1019 2541 Cloudy 74% cloud 12:00 -1.6 76 3 2 1B E 0 0 1018 2678 Clear 7% cloud 15:00 0.2 57 1 0 0B N 0 0 1019 2598 Clear 8% cloud 18:00 9.1 37 6 3 1B NE 0 0 1020 3120 Clear 1% cloud 21:00 10.3 25 8 4 2B NE 0.00 0 1019 3118 Clear 0% cloud Friday, 06/11 00:00 7.6 41 3 2 1B N 0 0 1020 3123 Clear 2% cloud 03:00 1.7 60 10 6 2B E 0 0 1022 3133 Clear 6% cloud 06:00 0.3 54 8 4 2B E 0 0 1023 2459 Clear 2% cloud 09:00 -0.2 49 6 3 2B E 0 0 1023 2549 Clear 1% cloud 12:00 -0.2 52 6 3 1B E 0 0 1022 2508 Clear 0% cloud 15:00 0.7 51 7 4 2B E 0 0 1023 2337 Clear 7% cloud 18:00 10.5 30 6 3 2B E 0 0 1023 3158 Partly cloudy 30% cloud 21:00 12.6 26 5 3 1B NE 0 0 1021 3155 Overcast 85% cloud Saturday, 07/11 00:00 9.2 40 7 4 2B E 0 0 1022 3157 Clear 1% cloud 03:00 4.3 60 10 6 2B E 0 0 1022 3158 Clear 0% cloud 06:00 3.5 62 9 5 2B E 0 0 1022 3163 Clear 1% cloud 09:00 3.3 53 7 4 2B E 0 0 1021 3160 Clear 0% cloud 12:00 2.2 56 4 2 1B E 0 0 1021 3157 Clear 1% cloud 15:00 2.7 55 3 2 1B E 0 0 1022 3161 Clear 0% cloud 18:00 13.4 30 1 1 1B SW 0 0 1021 3167 Clear 6% cloud 21:00 15.1 31 6 3 2B W 0 0 1020 3161 Cloudy 52% cloud Sunday, 08/11 00:00 10.8 52 4 2 1B SW 0 0 1021 3158 Partly cloudy 44% cloud 03:00 5 71 2 1 1B SW 0 0 1022 3163 Clear 6% cloud 06:00 4.4 64 3 2 1B S 0 0 1022 3168 Partly cloudy 44% cloud 09:00 4.1 52 4 2 1B SW 0 0 1022 3162 Partly cloudy 25% cloud 12:00 3.9 50 3 1 1B SW 0 0 1022 3158 Clear 11% cloud 15:00 4.2 49 3 1 1B SW 0 0 1022 3162 Cloudy 73% cloud 18:00 12.8 29 7 4 2B SW 0 0 1023 3168 Overcast 90% cloud 21:00 13.5 31 12 6 2B SW 0 0 1021 3160 Overcast 90% cloud Monday, 09/11 00:00 9.8 50 5 3 1B SW 0 0 1022 3154 Cloudy 63% cloud 03:00 5.1 61 3 2 1B S 0 0 1022 3155 Overcast 96% cloud 06:00 4.1 49 4 2 1B S 0 0 1022 3155 Overcast 94% cloud 09:00 3.9 49 5 2 1B SW 0 0 1021 3149 Overcast 95% cloud 12:00 3.2 52 4 2 1B SW 0 0 1021 3143 Overcast 89% cloud 15:00 3.2 49 4 2 1B S 0 0 1022 3150 Overcast 94% cloud 18:00 11.9 25 9 5 2B SW 0 0 1022 3159 Overcast 93% cloud 21:00 12.7 24 13 7 3B SW 0 0 1021 3153 Overcast 92% cloud Tuesday, 10/11 00:00 9.1 44 5 3 1B SW 0 0 1022 3154 Overcast 86% cloud 03:00 4.8 50 2 1 1B S 0 0 1023 3158 Cloudy 67% cloud 06:00 3.6 40 1 1 0B S 0 0 1024 3166 Clear 3% cloud 09:00 4.1 37 2 1 1B SE 0 0 1023 3161 Clear 0% cloud 12:00 3.7 44 1 1 1B SW 0 0 1022 3155 Clear 7% cloud 15:00 3.2 48 1 0 0B S 0 0 1023 3163 Clear 6% cloud 18:00 12.6 29 2 1 1B SW 0 0 1024 3173 Clear 1% cloud 21:00 14.4 29 6 3 2B W 0 0 1022 3169 Clear 7% cloud Wednesday, 11/11 00:00 11.1 49 2 1 1B W 0 0 1022 3164 Partly cloudy 25% cloud 03:00 5 63 2 1 1B SE 0 0 1021 3164 Partly cloudy 38% cloud 06:00 4.9 55 2 1 1B S 0 0 1022 3164 Partly cloudy 45% cloud |
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Forecast table times: UTC.
Coordinates: 38.8013596°N, -120.097922°E · Requested elevation: 2025 m. Model terrain: 2235 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.

Sierra-at-Tahoe Ski Resort is a downhill ski area in California, United States. Mapped terrain includes easy, intermediate, advanced routes. Its mapped lift network extends from approximately 2025 to 2699 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 -0.5 85 3 2 1B E — — 1020 2826 Overcast 86% cloud 09:00 0.3 77 5 3 1B E 0.03 0 1019 2541 Cloudy 74% cloud 12:00 -1.6 76 3 2 1B E 0 0 1018 2678 Clear 7% cloud 15:00 0.2 57 1 0 0B N 0 0 1019 2598 Clear 8% cloud 18:00 9.1 37 6 3 1B NE 0 0 1020 3120 Clear 1% cloud 21:00 10.3 25 8 4 2B NE 0.00 0 1019 3118 Clear 0% cloud Friday, 06/11 00:00 7.6 41 3 2 1B N 0 0 1020 3123 Clear 2% cloud 03:00 1.7 60 10 6 2B E 0 0 1022 3133 Clear 6% cloud 06:00 0.3 54 8 4 2B E 0 0 1023 2459 Clear 2% cloud 09:00 -0.2 49 6 3 2B E 0 0 1023 2549 Clear 1% cloud 12:00 -0.2 52 6 3 1B E 0 0 1022 2508 Clear 0% cloud 15:00 0.7 51 7 4 2B E 0 0 1023 2337 Clear 7% cloud 18:00 10.5 30 6 3 2B E 0 0 1023 3158 Partly cloudy 30% cloud 21:00 12.6 26 5 3 1B NE 0 0 1021 3155 Overcast 85% cloud Saturday, 07/11 00:00 9.2 40 7 4 2B E 0 0 1022 3157 Clear 1% cloud 03:00 4.3 60 10 6 2B E 0 0 1022 3158 Clear 0% cloud 06:00 3.5 62 9 5 2B E 0 0 1022 3163 Clear 1% cloud 09:00 3.3 53 7 4 2B E 0 0 1021 3160 Clear 0% cloud 12:00 2.2 56 4 2 1B E 0 0 1021 3157 Clear 1% cloud 15:00 2.7 55 3 2 1B E 0 0 1022 3161 Clear 0% cloud 18:00 13.4 30 1 1 1B SW 0 0 1021 3167 Clear 6% cloud 21:00 15.1 31 6 3 2B W 0 0 1020 3161 Cloudy 52% cloud Sunday, 08/11 00:00 10.8 52 4 2 1B SW 0 0 1021 3158 Partly cloudy 44% cloud 03:00 5 71 2 1 1B SW 0 0 1022 3163 Clear 6% cloud 06:00 4.4 64 3 2 1B S 0 0 1022 3168 Partly cloudy 44% cloud 09:00 4.1 52 4 2 1B SW 0 0 1022 3162 Partly cloudy 25% cloud 12:00 3.9 50 3 1 1B SW 0 0 1022 3158 Clear 11% cloud 15:00 4.2 49 3 1 1B SW 0 0 1022 3162 Cloudy 73% cloud 18:00 12.8 29 7 4 2B SW 0 0 1023 3168 Overcast 90% cloud 21:00 13.5 31 12 6 2B SW 0 0 1021 3160 Overcast 90% cloud Monday, 09/11 00:00 9.8 50 5 3 1B SW 0 0 1022 3154 Cloudy 63% cloud 03:00 5.1 61 3 2 1B S 0 0 1022 3155 Overcast 96% cloud 06:00 4.1 49 4 2 1B S 0 0 1022 3155 Overcast 94% cloud 09:00 3.9 49 5 2 1B SW 0 0 1021 3149 Overcast 95% cloud 12:00 3.2 52 4 2 1B SW 0 0 1021 3143 Overcast 89% cloud 15:00 3.2 49 4 2 1B S 0 0 1022 3150 Overcast 94% cloud 18:00 11.9 25 9 5 2B SW 0 0 1022 3159 Overcast 93% cloud 21:00 12.7 24 13 7 3B SW 0 0 1021 3153 Overcast 92% cloud Tuesday, 10/11 00:00 9.1 44 5 3 1B SW 0 0 1022 3154 Overcast 86% cloud 03:00 4.8 50 2 1 1B S 0 0 1023 3158 Cloudy 67% cloud 06:00 3.6 40 1 1 0B S 0 0 1024 3166 Clear 3% cloud 09:00 4.1 37 2 1 1B SE 0 0 1023 3161 Clear 0% cloud 12:00 3.7 44 1 1 1B SW 0 0 1022 3155 Clear 7% cloud 15:00 3.2 48 1 0 0B S 0 0 1023 3163 Clear 6% cloud 18:00 12.6 29 2 1 1B SW 0 0 1024 3173 Clear 1% cloud 21:00 14.4 29 6 3 2B W 0 0 1022 3169 Clear 7% cloud Wednesday, 11/11 00:00 11.1 49 2 1 1B W 0 0 1022 3164 Partly cloudy 25% cloud 03:00 5 63 2 1 1B SE 0 0 1021 3164 Partly cloudy 38% cloud 06:00 4.9 55 2 1 1B S 0 0 1022 3164 Partly cloudy 45% cloud |
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Forecast table times: UTC.
Coordinates: 38.8013596°N, -120.097922°E · Requested elevation: 2025 m. Model terrain: 2235 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 -0.5 57 3 2 1B NW — — 1020 2876 Overcast 85% cloud 09:00 0.2 55 10 6 2B N 0.02 0 1020 2617 Cloudy 75% cloud 12:00 -0.3 42 14 8 3B N 0 0 1018 2742 Clear 4% cloud 15:00 -0 39 13 7 3B N 0 0 1019 2705 Clear 5% cloud 18:00 4.3 29 19 11 3B N 0 0 1020 3120 Clear 1% cloud 21:00 4.5 26 17 9 3B N 0.00 0 1019 3118 Clear 0% cloud Friday, 06/11 00:00 3.3 36 18 10 3B N 0 0 1020 3122 Clear 2% cloud 03:00 1 38 20 11 3B NE 0 0 1023 2322 Clear 7% cloud 06:00 0.4 32 13 7 3B NE 0 0 1023 2615 Clear 2% cloud 09:00 0.2 29 10 5 2B NE 0 0 1023 2654 Clear 1% cloud 12:00 0.6 32 11 6 2B NE 0 0 1022 2595 Clear 0% cloud 15:00 1.1 36 14 8 3B NE 0 0 1023 2472 Clear 7% cloud 18:00 6.6 29 14 8 3B NE 0 0 1023 3158 Partly cloudy 30% cloud 21:00 7.8 29 12 7 2B NE 0 0 1022 3155 Overcast 86% cloud Saturday, 07/11 00:00 6.2 40 16 8 3B NE 0 0 1023 3157 Clear 1% cloud 03:00 4.3 48 18 10 3B NE 0 0 1023 3158 Clear 0% cloud 06:00 4.1 48 12 7 3B E 0 0 1023 3163 Clear 1% cloud 09:00 4.1 42 6 3 2B E 0 0 1022 3160 Clear 0% cloud 12:00 3.8 40 2 1 1B NE 0 0 1021 3156 Clear 1% cloud 15:00 4 40 2 1 1B N 0 0 1022 3161 Clear 0% cloud 18:00 9.5 30 1 1 1B W 0 0 1022 3167 Clear 6% cloud 21:00 10.3 33 8 4 2B SW 0 0 1020 3161 Cloudy 52% cloud Sunday, 08/11 00:00 8.1 41 10 5 2B SW 0 0 1021 3158 Partly cloudy 46% cloud 03:00 5 48 11 6 2B SW 0 0 1022 3163 Clear 6% cloud 06:00 4.6 44 13 7 3B SW 0 0 1023 3168 Partly cloudy 41% cloud 09:00 4.1 41 20 11 4B SW 0 0 1022 3162 Partly cloudy 26% cloud 12:00 3.8 39 20 11 4B SW 0 0 1022 3158 Clear 11% cloud 15:00 3.7 36 16 9 3B SW 0 0 1022 3162 Cloudy 72% cloud 18:00 8.2 26 17 9 3B SW 0 0 1023 3168 Overcast 91% cloud 21:00 8 33 20 11 4B SW 0 0 1022 3160 Overcast 91% cloud Monday, 09/11 00:00 6.1 39 18 10 3B SW 0 0 1022 3154 Cloudy 61% cloud 03:00 3.8 44 17 9 3B SW 0 0 1022 3155 Overcast 96% cloud 06:00 3.3 38 19 10 3B SW 0 0 1022 3155 Overcast 96% cloud 09:00 3.3 37 22 12 4B SW 0 0 1021 3149 Overcast 96% cloud 12:00 2.7 38 23 13 4B SW 0 0 1021 3143 Overcast 89% cloud 15:00 2.6 36 23 12 4B SW 0 0 1022 3150 Overcast 94% cloud 18:00 7 24 24 13 4B SW 0 0 1023 3159 Overcast 93% cloud 21:00 7.2 25 23 13 4B SW 0 0 1022 3153 Overcast 92% cloud Tuesday, 10/11 00:00 5.5 33 20 11 4B SW 0 0 1022 3154 Overcast 83% cloud 03:00 3.4 38 17 9 3B SW 0 0 1023 3158 Cloudy 74% cloud 06:00 2.7 36 13 7 3B W 0 0 1024 3166 Clear 3% cloud 09:00 3.2 34 12 7 2B W 0 0 1023 3161 Clear 0% cloud 12:00 2.9 39 14 7 3B SW 0 0 1023 3156 Clear 7% cloud 15:00 2.7 41 13 7 3B W 0 0 1024 3163 Clear 6% cloud 18:00 8 28 11 6 2B W 0 0 1024 3173 Clear 1% cloud 21:00 9 31 9 5 2B W 0 0 1022 3169 Clear 5% cloud Wednesday, 11/11 00:00 7.8 37 6 3 1B SW 0 0 1022 3164 Partly cloudy 29% cloud 03:00 5.1 36 9 5 2B SW 0 0 1021 3164 Partly cloudy 35% cloud 06:00 5.3 31 15 8 3B SW 0 0 1022 3164 Partly cloudy 43% cloud |
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Forecast table times: UTC.
Coordinates: 38.7957331°N, -120.062914°E · Requested elevation: 2699 m. Model terrain: 2298 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.