Jackson, Wyoming climate: Normal weather by month, frost dates and records
Jackson's normal year runs from 6°F January nights to 79°F July afternoons, with 17.6 inches of precipitation and 78 inches of snow a year. (NOAA 1991-2020 normals)
In metric: a yearly mean of 3.3°C, January lows of −14°C, July highs of 26°C, 448 mm of precipitation a year.
- NOAA stationJackson
- Station IDUSC00484910
- Location43.49°N 110.76°W
- Elevation6,210 ft (1,893 m)
- Population10,680
On October 23, the normal high in Jackson is 51°F and the normal low 23°F, and the chance of measurable rain or snow is 28%.
Normals describe a typical year at the station, not a forecast. The National Weather Service forecast for Jackson.
- Jan 26° 6°
- Feb 30° 9°
- Mar 40° 18°
- Apr 50° 26°
- May 60° 32°
- Jun 70° 38°
- Jul 79° 41°
- Aug 78° 40°
- Sep 68° 33°
- Oct 55° 25°
- Nov 38° 16°
- Dec 26° 7°
Each month: normal high (large) and low, °F. Fill: the month's normal mean, colder blue to hotter red.
What is the weather like in Jackson each month?
July is the warmest month, with normal highs of 79°F; January the coldest, with normal lows of 6°F. The most precipitation falls in May (1.83 in), the least in July (1.10 in).
Each month has its own page with the day-by-day normals, the month's records and its recent years:
| Month | High | Low | Mean | Precip. | Snow | Wet days | 90°F days | Freezing nights | Daylight |
|---|---|---|---|---|---|---|---|---|---|
| January | 26°F | 6°F | 16.2°F | 1.45 | 19.1 | 12 | <1 | 30 | 9 h 20 min |
| February | 30°F | 9°F | 19.9°F | 1.43 | 15.6 | 10 | <1 | 27 | 10 h 30 min |
| March | 40°F | 18°F | 29.2°F | 1.33 | 9.2 | 9 | <1 | 29 | 11 h 50 min |
| April | 50°F | 26°F | 38.0°F | 1.46 | 4.2 | 9 | <1 | 25 | 13 h 20 min |
| May | 60°F | 32°F | 45.9°F | 1.83 | 0.6 | 11 | <1 | 16 | 14 h 40 min |
| June | 70°F | 38°F | 53.8°F | 1.61 | 0.0 | 10 | <1 | 6 | 15 h 20 min |
| July | 79°F | 41°F | 60.2°F | 1.10 | 0.0 | 7 | 3 | 2 | 15 h 10 min |
| August | 78°F | 40°F | 58.9°F | 1.14 | 0.0 | 8 | 1 | 3 | 14 h |
| September | 68°F | 33°F | 50.5°F | 1.59 | 0.1 | 8 | <1 | 15 | 12 h 30 min |
| October | 55°F | 25°F | 39.7°F | 1.57 | 2.0 | 9 | <1 | 25 | 11 h 10 min |
| November | 38°F | 16°F | 26.7°F | 1.37 | 11.0 | 10 | <1 | 28 | 9 h 40 min |
| December | 26°F | 7°F | 16.5°F | 1.76 | 16.4 | 14 | <1 | 30 | 9 h |
| Year (annual) | 52°F | 24°F | 37.9°F | 17.64 | 78.2 | 116 | 5 | 236 |
The same normals in °C and millimetres
| Month | High | Low | Mean | Precip. | Snow |
|---|---|---|---|---|---|
| January | −3°C | −14°C | −8.8°C | 37 mm | 49 cm |
| February | −1°C | −13°C | −6.7°C | 36 mm | 40 cm |
| March | 5°C | −8°C | −1.6°C | 34 mm | 23 cm |
| April | 10°C | −3°C | 3.3°C | 37 mm | 11 cm |
| May | 16°C | 0°C | 7.7°C | 46 mm | 2 cm |
| June | 21°C | 3°C | 12.1°C | 41 mm | 0 cm |
| July | 26°C | 5°C | 15.7°C | 28 mm | 0 cm |
| August | 26°C | 4°C | 14.9°C | 29 mm | 0 cm |
| September | 20°C | 0°C | 10.3°C | 40 mm | 0 cm |
| October | 13°C | −4°C | 4.3°C | 40 mm | 5 cm |
| November | 3°C | −9°C | −2.9°C | 35 mm | 28 cm |
| December | −3°C | −14°C | −8.6°C | 45 mm | 42 cm |
Source: NOAA NCEI 1991-2020 monthly normals, station USC00484910; 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.
When is the best weather to visit Jackson?
Normal highs sit between 65°F and 85°F in June, July, August and September. Of those, July has the fewest days with rain (7).
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 USC00484910.
How hot and how cold does it get in Jackson?
In a normal year in Jackson, 5 days a year reach 90°F, 236 nights fall to 32°F or colder and 116 days bring measurable precipitation.
- Days at 90°F or more
- 5a normal year
- Days at 100°F or more
- fewer than 1a normal year
- Nights at 32°F or colder
- 236a normal year
- Days that stay below freezing
- 61high of 32°F or less
- Days with 0.01 inch of precipitation
- 116a normal year
- Days with 1 inch of snow or more
- 28a normal year
The highest temperature in this station's record (since 1905) is 98°F, on August 19, 1981; the lowest is −50°F, on January 1, 1979.
The wettest calendar year on that record is 2017, with 23.27 in; the snowiest season is 1966–67, with 153.3 inches.
Source: NOAA NCEI 1991-2020 annual normals, station USC00484910; records: ACIS (NOAA Regional Climate Centers), station USC00484910. Records use complete months only; a month missing more than three days is left out.
How sunny is Jackson?
Over a year 75% of the sunlight that would reach the ground under clear skies gets through the clouds in the area around Jackson, 4.4 kWh per square metre a day. July is the sunniest month (85%) and December the cloudiest (64%).
| Month | Share of clear-sky sunshine | Sunshine, kWh/m² a day |
|---|---|---|
| January | 72% | 2.0 |
| February | 72% | 2.9 |
| March | 72% | 4.2 |
| April | 72% | 5.4 |
| May | 69% | 5.9 |
| June | 77% | 7.0 |
| July | 85% | 7.4 |
| August | 83% | 6.3 |
| September | 80% | 4.8 |
| October | 70% | 3.1 |
| November | 65% | 2.0 |
| December | 64% | 1.5 |
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 much heating and cooling does Jackson need?
A normal year in Jackson brings 9,857 heating degree days, 83% more than the median U.S. place (5,373), and 22 cooling degree days, 98% 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 880 growing degree days a year above 50°F.
| Month | Heating | Cooling |
|---|---|---|
| January | 1,513 | 0 |
| February | 1,264 | 0 |
| March | 1,110 | 0 |
| April | 810 | 0 |
| May | 592 | 0 |
| June | 337 | 1 |
| July | 160 | 13 |
| August | 197 | 8 |
| September | 437 | 0 |
| October | 784 | 0 |
| November | 1,149 | 0 |
| December | 1,503 | 0 |
| Year (annual) | 9,857 | 22 |
Source: NOAA NCEI 1991-2020 monthly normals, station USC00484910. 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.
Has Jackson been warmer than normal lately?
2025 averaged 40.4°F, 2.5°F above the 1991-2020 normal of 37.9°F. 3 of the 5 complete years since 2021 ran warmer than the normal.
| Year | Mean | Against normal | Precip. | Snow |
|---|---|---|---|---|
| 2021 | 39.3°F | +1.4°F | 16.84 | 76.9 |
| 2022 | 35.8°F | −2.1°F | 18.99 | 92.4 |
| 2023 | 36.6°F | −1.3°F | 20.72 | 76.4 |
| 2024 | 39.1°F | +1.2°F | 17.25 | 142.9 |
| 2025 | 40.4°F | +2.5°F | 18.98 | 71.3 |
Over 45 complete years from 1949 to 2025, the station's annual mean temperature rose at a fitted 4.7°F per century (+0.26°C per decade). A fitted rate summarizes the whole record; single years swing well above and below it.
Source: observed years: ACIS, station USC00484910; trend: NOAA GHCN-Monthly v4. A year counts only with all twelve months complete.
How does Jackson's climate compare?
Jackson is warmer than 8 of the other 70 places with their own NOAA record in Wyoming, and wetter than 52. Across the 7,247 U.S. stations with normals, its annual mean of 37.9°F is warmer than 3%.
In the Köppen classification computed from these normals, Jackson is Dfb: continental, no dry season, warm 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.
Which places near Jackson share this climate record?
5 places have no NOAA station with 1991-2020 normals of their own, and this station is the nearest full record. A place's own climate can differ from these figures, by several degrees where it sits much higher or lower than the station, nearer the coast, or inside a large city's heat; for the larger places the next nearest records are named with their yearly mean, so the spread around them is visible, and places of 50,000 or more have their own page with NOAA's gridded normals.
- South Park, WY2,021 people · 5 mi SW
- Hoback, WY1,609 people · 12 mi S
- Moose Wilson Road, WY1,380 people · 5 mi NW
- Wilson, WY1,255 people · 8 mi W
- Rafter J Ranch, WY1,202 people · 4 mi S
Source: Census Bureau 2024 Gazetteer (place centers) and Vintage 2024 population estimates. Distance and direction from the station to each place's center.
Questions about Jackson's climate
What is the coldest month in Jackson?
January, with a normal high of 26°F and a normal low of 6°F. The warmest is July (79°F by day, 41°F at night).
Does it snow in Jackson?
Yes: 78 inches in a normal year, falling on 47 days with 0.1 inch or more, the most in January (19.1 inches).
What is the rainiest month in Jackson?
May, with 1.83 in of precipitation in a normal year; the driest is July with 1.10 in.
What plant hardiness zone is Jackson in?
The USDA's 2023 map puts Jackson in zone 4b in ZIP code 83001, the nearest ZIP area. By the same method at Jackson's NOAA station, the coldest night of a typical year reaches −25°F (25 years, 1991-2020): zone 4b.
Nearby and next
- Jackson in OctoberThis month day by day, its records and recent years
- Wyoming climateThe statewide normals and every place in the state
- Moose, WY12 miles from this station, 38.4°F a year
- Alta, WY24 miles from this station, 40.5°F a year
- Driggs, ID24 miles from this station, 42.2°F a year
- Swan Valley, ID26 miles from this station, 42.6°F a year
- Compare two placesMonth by month, side by side
Download these normals (CSV) · JSON · How these figures are made