Snake River, Wyoming climate: Climate normals at a NOAA weather station
Snake River's normal year runs from 1°F January nights to 77°F July afternoons, with 32.8 inches of precipitation and 294 inches of snow a year. (NOAA 1991-2020 normals)
In metric: a yearly mean of 1.3°C, January lows of −17°C, July highs of 25°C, 834 mm of precipitation a year.
- NOAA stationSnake River
- Station IDUSC00488315
- Location44.14°N 110.67°W
- Elevation6,882 ft (2,098 m)
On October 23, the normal high in Snake River is 47°F and the normal low 19°F, and the chance of measurable rain or snow is 35%.
Normals describe a typical year at the station, not a forecast. The National Weather Service forecast for Snake River.
- Jan 26° 1°
- Feb 30° 3°
- Mar 39° 11°
- Apr 46° 20°
- May 56° 28°
- Jun 66° 34°
- Jul 77° 38°
- Aug 76° 35°
- Sep 66° 28°
- Oct 51° 21°
- Nov 35° 11°
- Dec 25° 2°
Each month: normal high (large) and low, °F. Fill: the month's normal mean, colder blue to hotter red.
What is the weather like at Snake River each month?
July is the warmest month, with normal highs of 77°F; January the coldest, with normal lows of 1°F. The most precipitation falls in December (4.21 in), the least in July (1.41 in).
| Month | High | Low | Mean | Precip. | Snow | Wet days | 90°F days | Freezing nights | Daylight |
|---|---|---|---|---|---|---|---|---|---|
| January | 26°F | 1°F | 13.3°F | 3.88 | 65.0 | 18 | <1 | 31 | 9 h 10 min |
| February | 30°F | 3°F | 16.4°F | 3.07 | 50.2 | 16 | <1 | 28 | 10 h 30 min |
| March | 39°F | 11°F | 24.9°F | 3.02 | 31.0 | 15 | <1 | 31 | 11 h 50 min |
| April | 46°F | 20°F | 32.9°F | 2.81 | 25.9 | 15 | <1 | 29 | 13 h 20 min |
| May | 56°F | 28°F | 42.2°F | 2.78 | 5.0 | 13 | <1 | 26 | 14 h 40 min |
| June | 66°F | 34°F | 50.3°F | 2.44 | 0.3 | 13 | <1 | 14 | 15 h 30 min |
| July | 77°F | 38°F | 57.4°F | 1.41 | 0.0 | 9 | 1 | 6 | 15 h 10 min |
| August | 76°F | 35°F | 55.7°F | 1.60 | 0.0 | 9 | <1 | 11 | 14 h |
| September | 66°F | 28°F | 47.0°F | 1.87 | 0.2 | 9 | <1 | 24 | 12 h 40 min |
| October | 51°F | 21°F | 35.8°F | 2.27 | 8.9 | 10 | <1 | 30 | 11 h 10 min |
| November | 35°F | 11°F | 23.1°F | 3.46 | 42.4 | 15 | <1 | 30 | 9 h 40 min |
| December | 25°F | 2°F | 13.5°F | 4.21 | 64.7 | 20 | <1 | 31 | 8 h 50 min |
| Year (annual) | 50°F | 19°F | 34.4°F | 32.82 | 293.6 | 160 | 1 | 289 |
The same normals in °C and millimetres
| Month | High | Low | Mean | Precip. | Snow |
|---|---|---|---|---|---|
| January | −3°C | −17°C | −10.4°C | 99 mm | 165 cm |
| February | −1°C | −16°C | −8.7°C | 78 mm | 128 cm |
| March | 4°C | −12°C | −3.9°C | 77 mm | 79 cm |
| April | 8°C | −6°C | 0.5°C | 71 mm | 66 cm |
| May | 14°C | −2°C | 5.7°C | 71 mm | 13 cm |
| June | 19°C | 1°C | 10.2°C | 62 mm | 1 cm |
| July | 25°C | 3°C | 14.1°C | 36 mm | 0 cm |
| August | 25°C | 2°C | 13.2°C | 41 mm | 0 cm |
| September | 19°C | −2°C | 8.3°C | 47 mm | 1 cm |
| October | 10°C | −6°C | 2.1°C | 58 mm | 23 cm |
| November | 2°C | −12°C | −4.9°C | 88 mm | 108 cm |
| December | −4°C | −17°C | −10.3°C | 107 mm | 164 cm |
Source: NOAA NCEI 1991-2020 monthly normals, station USC00488315; annual normals. Wet days: 0.01 inch or more; 90°F days and freezing nights: NOAA's day counts. Daylight: sunrise to sunset on the 15th, computed from the latitude.
Which months are mildest at Snake River?
Normal highs sit between 65°F and 85°F in June, July, August and September. Of those, September has the fewest days with rain (9).
That is a measurement, not a recommendation: it counts the months whose normal afternoon high sits between 65°F and 85°F, where a light layer is enough by day.
Source: NOAA NCEI 1991-2020 monthly normals, station USC00488315.
How hot and how cold does it get at Snake River?
In a normal year in Snake River, 1 day a year reaches 90°F, 289 nights fall to 32°F or colder and 160 days bring measurable precipitation.
- Days at 90°F or more
- 1a normal year
- Days at 100°F or more
- fewer than 1a normal year
- Nights at 32°F or colder
- 289a normal year
- Days that stay below freezing
- 88high of 32°F or less
- Days with 0.01 inch of precipitation
- 160a normal year
- Days with 1 inch of snow or more
- 80a normal year
The highest temperature in this station's record (since 1905) is 97°F, on July 18, 1951; the lowest is −56°F, on February 6, 1914.
The wettest calendar year on that record is 2014, with 48.12 in; the snowiest season is 1996–97, with 450.5 inches.
Source: NOAA NCEI 1991-2020 annual normals, station USC00488315; records: ACIS (NOAA Regional Climate Centers), station USC00488315. Records use complete months only; a month missing more than three days is left out.
How sunny is it at Snake River?
Over a year 72% of the sunlight that would reach the ground under clear skies gets through the clouds at Snake River, 4.2 kWh per square metre a day. July is the sunniest month (85%) and December the cloudiest (58%).
| Month | Share of clear-sky sunshine | Sunshine, kWh/m² a day |
|---|---|---|
| January | 63% | 1.7 |
| February | 67% | 2.6 |
| March | 67% | 3.8 |
| April | 69% | 5.2 |
| May | 67% | 5.8 |
| June | 74% | 6.7 |
| July | 85% | 7.3 |
| August | 82% | 6.1 |
| September | 78% | 4.7 |
| October | 66% | 2.9 |
| November | 61% | 1.8 |
| December | 58% | 1.3 |
Source: NASA POWER solar climatology, 2001-2020 (CERES SYN1deg). Satellite-based, for the 1-degree cell (about 100 km across) around the station, so it describes the area rather than the airport.
How many heating and cooling degree days does Snake River record?
A normal year at Snake River brings 11,149 heating degree days, 2.1 times the median U.S. place (5,373), and 7 cooling degree days, 99% fewer than the median (908). Ten months need 300 or more heating degree days, a monthly mean of about 55°F or colder. For gardens and crops, NOAA counts 566 growing degree days a year above 50°F.
| Month | Heating | Cooling |
|---|---|---|
| January | 1,603 | 0 |
| February | 1,361 | 0 |
| March | 1,243 | 0 |
| April | 962 | 0 |
| May | 707 | 0 |
| June | 441 | 0 |
| July | 241 | 5 |
| August | 290 | 2 |
| September | 540 | 0 |
| October | 907 | 0 |
| November | 1,259 | 0 |
| December | 1,596 | 0 |
| Year (annual) | 11,149 | 7 |
Source: NOAA NCEI 1991-2020 monthly normals, station USC00488315. A degree day is one degree of a day's mean temperature below 65°F (heating) or above it (cooling); utilities use them to estimate energy use.
Have recent years at Snake River been warmer than normal?
2025 averaged 36.7°F, 2.3°F above the 1991-2020 normal of 34.4°F. 3 of the 4 complete years since 2021 ran warmer than the normal.
| Year | Mean | Against normal | Precip. | Snow |
|---|---|---|---|---|
| 2021 | 35.9°F | +1.5°F | 27.22 | – |
| 2022 | 33.3°F | −1.1°F | 28.45 | – |
| 2024 | 35.9°F | +1.5°F | – | – |
| 2025 | 36.7°F | +2.3°F | – | – |
Over 49 complete years from 1910 to 2025, the station's annual mean temperature rose at a fitted 2.9°F per century (+0.16°C per decade). A fitted rate summarizes the whole record; single years swing well above and below it.
Source: observed years: ACIS, station USC00488315; trend: NOAA GHCN-Monthly v4. A year counts only with all twelve months complete.
How does Snake River's climate compare?
Snake River is warmer than 1 of the 71 places with their own NOAA record in Wyoming, and wetter than 64. Across the 7,247 U.S. stations with normals, its annual mean of 34.4°F is warmer than 1%.
In the Köppen classification computed from these normals, Snake River is Dfc: continental, no dry season, cool summer. What the classes mean.
Places with the most similar year elsewhere
Measured month by month on the normal high, low and precipitation, among places of 20,000 or more people in other states:
Source: NOAA NCEI 1991-2020 normals for every station PlainClimate covers. Similarity: the root-mean-square difference of the 36 monthly figures, precipitation weighted so an inch counts like 6°F.
Questions about Snake River's climate
What is the coldest month at Snake River?
January, with a normal high of 26°F and a normal low of 1°F. The warmest is July (77°F by day, 38°F at night).
Does it snow at Snake River?
Yes: 294 inches in a normal year, falling on 92 days with 0.1 inch or more, the most in January (65.0 inches).
What is the rainiest month at Snake River?
December, with 4.21 in of precipitation in a normal year; the driest is July with 1.41 in.
What plant hardiness zone is Snake River in?
The USDA's 2023 map puts Snake River in zone 5a in ZIP code 83013, the nearest ZIP area. By the same method at the station, the coldest night of a typical year reaches −31°F (19 years, 1991-2020): zone 3b.
Nearby and next
- Wyoming climateThe statewide normals and every place in the state
- Moran (5 mi WNW), WY20 miles from this station, 35.6°F a year
- Old Faithful, WY24 miles from this station, 34.4°F a year
- Yellowstone Lake, WY30 miles from this station, 32.0°F a year
- Alta, WY31 miles from this station, 40.5°F a year
- Compare two placesMonth by month, side by side
Download these normals (CSV) · JSON · How these figures are made