Jackson, WY weather in August
In August, Jackson sees highs around 78°F and lows around 40°F: mild, with some rain. Expect about 8 wet days. It is one of the warmest months in Jackson. Great for outdoor plans.
- Normal high
- 78°F
- Normal low
- 40°F
- Wet days
- 8
- 1.1 in total
- Muggy days
- 0
- dew point 65°F+
How August changes from start to finish
| August 1 | August 31 | |
|---|---|---|
| Normal high | 81°F | 74°F |
| Normal low | 42°F | 37°F |
| Chance of a wet day | 24% | 25% |
| Sunrise / sunset | 6:12 am / 8:45 pm | 6:45 am / 8:00 pm |
| Daylight | 14.6 h | 13.3 h |
Chance of a wet day: average for the first and last 7 days of the month. Times are local clock time (Mountain Time).
What kind of days to expect
- Comfortable dayshigh 65-80°F and dew point under 60°F13 of 31
- Hot dayshigh 90°F or more1 of 31
- Muggy daysdaily mean dew point 65°F or more0 of 31
- Wet daysat least 0.01 in of rain or melted snow8 of 31
- Notable rainat least 0.10 in4 of 31
- Freezing nightslow 32°F or below3 of 31
- Snow on the groundsnow depth 1 in or more0 of 31
Average days per August, counted from daily records for each year 1991-2020.
Rain in August
Normal precipitation is 1.1 in; a dry August brings about 0.5 in and a wet one about 1.6 in (25th and 75th percentiles). About 1 day brings half an inch or more. Snow is very rare.
How August varies from year to year
- Warmest August, 1991-20202003: average high 86°F
- Coolest August2014: average high 71°F
- Wettest August2007: 2.7 in
- Driest August2008: 0.2 in
- Highest reading95°F (August 15, 2003)
- Lowest reading20°F (August 27, 1992)
From the station's daily records with NOAA quality flags removed; most recent date shown when a reading repeats.
August compared with July and September
| July | August | September | |
|---|---|---|---|
| Normal high | 79°F | 78°F | 68°F |
| Normal low | 41°F | 40°F | 33°F |
| Wet days | 7 | 8 | 8 |
| Comfortable days | 10 | 13 | 21 |
| Daylight | 15.0 h | 13.9 h | 12.5 h |
Highs change by -1°F from July and -10°F into September.
Nearby alternatives in August
- Warmer: Billings, MT194 mi · high 85°F · 6 wet days
- Drier: Sun Valley, ID180 mi · high 79°F · 4 wet days
How Jackson ranks in August
- Normal high331st warmest of 378 cities; 4th of 4 in Wyoming
- Wet days148th driest of 378
- Comfortable days36th most of 341
What to pack for Jackson in August
- A warm jacket – lows near 40°F, highs near 78°F
- Layers – afternoons near 78°F but nights near 40°F
Frost in August
The first fall frost typically comes around Aug 28; in 1 year in 10 it comes before Aug 8. All frost dates for Jackson.
Heating and cooling
August has 197 heating degree days and 8 cooling degree days (base 65°F), 2% of the year's total heating and cooling demand.
Questions
How hot is Jackson in August?
The normal high is 78°F and the normal low is 40°F. From 1991 to 2020 the hottest August reading was 95°F (most recently on August 15, 2003).
Does it rain a lot in Jackson in August?
About 8 days in August have at least 0.01 in of precipitation, and the normal total is 1.1 in. The wettest August in 1991-2020 was in 2007 (2.7 in); the driest was in 2008 (0.2 in).
Does it snow in Jackson in August?
Snow is very rare: the 1991-2020 normal for August rounds to 0.0 in.
Is August a good time to visit Jackson?
August ranks 4th of 12 months on our comfort score for Jackson (71 out of 100). It has about 13 comfortable days and about 1 day at 90°F or hotter. The best months are June and September.
Where the numbers come from
- Temperature, rain and snowfall: Jackson (USC00484910), 0.5 mi N of the city center, 6,210 ft . NOAA normals and daily records, 1991-2020.
- Snow depth: Moose (USC00486428), 12 mi N of the city center, 6,444 ft (206 ft higher than the city). NOAA normals and daily records, 1991-2020.
- Frost dates: Moose 1 Nne (USW00004131), 13 mi NNE of the city center, 6,466 ft (228 ft higher than the city). NOAA normals and daily records, 1991-2020.
- Daily humidity and wind: Rexburg-Madison County Apt (726818-94194), 58 mi WNW of the city center, 4,858 ft (1,380 ft lower than the city). Hourly observations, 1991-2020.
- Not available for this location: humidity and wind by hour and cloud cover (no station close enough or similar enough in elevation).