La Crosse weather in August: La Crosse, Wisconsin: normal highs, lows, rain and records for August
La Crosse in August has a normal high of 83°F and a normal low of 62°F, a daily mean of 73°F, falling from 85°F on the 1st to 81°F by the 31st. Measurable precipitation falls on 9 days in a normal August, 3.90 inches in all. (NOAA 1991-2020 normals)
In metric: a normal high of 28°C and low of 17°C, 99 mm of precipitation in August.
- NOAA stationLa Crosse Regional Airport
- Station IDUSW00014920
- Location43.88°N 91.25°W
- Elevation652 ft (199 m)
- Population51,049
- Jan 27° 11°
- Feb 33° 14°
- Mar 46° 26°
- Apr 60° 38°
- May 72° 50°
- Jun 82° 60°
- Jul 85° 65°
- Aug 83° 62°
- Sep 76° 54°
- Oct 62° 42°
- Nov 46° 30°
- Dec 33° 18°
Each month: normal high (large) and low, °F. Fill: the month's normal mean, colder blue to hotter red.
How warm is La Crosse in August?
The normal high is 83°F and the normal low 62°F, for a daily mean of 72.8°F. August is 2.2°F cooler than July and 8.0°F warmer than September. August is the 2nd warmest month of the year in La Crosse and the 4th wettest. Across the month the normal high falls 4°F, from 85°F on August 1 to 81°F on August 31. From one year to the next August's mean temperature typically moves about 2.5°F either way (NOAA's standard deviation), so roughly two Augusts in three average between 70°F and 75°F.
Bars above: each day's normal high to low. Columns below: the chance of 0.01 inch or more of precipitation that day, on a scale of 0 to 100% (highest 32%).
| Day | High | Low | Chance of 0.01 in | Chance of 0.10 in |
|---|---|---|---|---|
| August 1 | 85°F | 64°F | 32% | 21% |
| August 8 | 84°F | 64°F | 31% | 20% |
| August 15 | 84°F | 63°F | 31% | 21% |
| August 22 | 83°F | 62°F | 30% | 20% |
| August 31 | 81°F | 60°F | 30% | 20% |
Every day of August: normal high, low and chance of precipitation (warmest afternoon August 1, coldest night August 31)
| Day | High | Low | Chance of 0.01 in | Chance of 0.10 in | Daylight |
|---|---|---|---|---|---|
| August 1 | 85°F | 64°F | 32% | 21% | 14 h 40 min |
| August 2 | 85°F | 64°F | 32% | 21% | 14 h 40 min |
| August 3 | 85°F | 64°F | 32% | 21% | 14 h 30 min |
| August 4 | 85°F | 64°F | 31% | 21% | 14 h 30 min |
| August 5 | 85°F | 64°F | 31% | 20% | 14 h 30 min |
| August 6 | 85°F | 64°F | 31% | 20% | 14 h 30 min |
| August 7 | 84°F | 64°F | 31% | 20% | 14 h 20 min |
| August 8 | 84°F | 64°F | 31% | 20% | 14 h 20 min |
| August 9 | 84°F | 63°F | 31% | 20% | 14 h 20 min |
| August 10 | 84°F | 63°F | 31% | 20% | 14 h 20 min |
| August 11 | 84°F | 63°F | 31% | 20% | 14 h 10 min |
| August 12 | 84°F | 63°F | 31% | 20% | 14 h 10 min |
| August 13 | 84°F | 63°F | 31% | 21% | 14 h 10 min |
| August 14 | 84°F | 63°F | 31% | 21% | 14 h 10 min |
| August 15 | 84°F | 63°F | 31% | 21% | 14 h |
| August 16 | 83°F | 63°F | 31% | 21% | 14 h |
| August 17 | 83°F | 62°F | 31% | 21% | 14 h |
| August 18 | 83°F | 62°F | 31% | 21% | 14 h |
| August 19 | 83°F | 62°F | 31% | 21% | 13 h 50 min |
| August 20 | 83°F | 62°F | 31% | 20% | 13 h 50 min |
| August 21 | 83°F | 62°F | 30% | 20% | 13 h 50 min |
| August 22 | 83°F | 62°F | 30% | 20% | 13 h 40 min |
| August 23 | 82°F | 62°F | 30% | 20% | 13 h 40 min |
| August 24 | 82°F | 61°F | 30% | 20% | 13 h 40 min |
| August 25 | 82°F | 61°F | 30% | 20% | 13 h 40 min |
| August 26 | 82°F | 61°F | 30% | 20% | 13 h 30 min |
| August 27 | 82°F | 61°F | 30% | 20% | 13 h 30 min |
| August 28 | 81°F | 60°F | 30% | 20% | 13 h 30 min |
| August 29 | 81°F | 60°F | 30% | 20% | 13 h 20 min |
| August 30 | 81°F | 60°F | 30% | 20% | 13 h 20 min |
| August 31 | 81°F | 60°F | 30% | 20% | 13 h 20 min |
- Normal high
- 83°FAugust average
- Normal low
- 62°FAugust average
- Precipitation
- 3.90 inmonth total
- Days with precipitation
- 90.01 inch or more
- Days at 90°F or more
- 4
- Daylight
- 14 h 40 min to 13 h 20 minAugust 1 to August 31
- Days at 70°F or more
- 30
- Days at 80°F or more
- 21
- Sunshine
- 78%of clear-sky sunlight (NASA)
Source: NOAA NCEI 1991-2020 daily normals, station USW00014920; monthly normals. Daylight is computed from the place's latitude with NOAA's solar equations.
Does it rain in La Crosse in August?
On a given August day the chance of 0.01 inch or more is 31% on average, highest around August 1 (32%). In all, 3.90 in falls on 9 days of a normal August, 1 of them with an inch or more.
In a normal August in La Crosse, 4 days reach 90°F.
Source: NOAA NCEI 1991-2020 daily and monthly normals, station USW00014920.
How humid and windy is La Crosse in August?
At 3 p.m. the normal temperature is 79°F with 51% relative humidity and a dew point of 59°F; at 6 a.m. it is 62°F with 88% humidity. The wind averages 7.5 mph, most often from the southwest in the afternoon.
| Time | Temperature | Dew point | Humidity | Wind | Clear or few clouds |
|---|---|---|---|---|---|
| 6 a.m. | 62°F | 59°F | 88% | 6.2 mph | 52% |
| 9 a.m. | 69°F | 60°F | 73% | 7.8 mph | 54% |
| noon | 77°F | 60°F | 56% | 9.5 mph | 57% |
| 3 p.m. | 79°F | 59°F | 51% | 10.0 mph | 58% |
| 6 p.m. | 76°F | 60°F | 58% | 8.0 mph | 67% |
| 9 p.m. | 68°F | 61°F | 79% | 6.1 mph | 74% |
Source: NOAA NCEI 1991-2020 hourly normals, station USW00014920. Hourly normals exist only for NOAA's first-order stations; a dash where NOAA publishes no value for that hour (the sky at some hours).
What are the records for August in La Crosse?
The warmest August temperature on La Crosse's official record (since 1872) is 105°F, on August 1, 1988; the coldest is 35°F, on August 30, 1915. The wettest August brought 13.75 in (2007).
The August mean against the 1991-2020 normal of 72.8°F: 2021 74.3°F (+1.5), 2022 72.7°F (−0.1), 2023 74.2°F (+1.4), 2024 72.6°F (−0.2), 2025 71.0°F (−1.8), 2026 72.4°F (−0.4). 2 of 6 ran warmer than normal.
| August | Mean | Against normal | Precip. |
|---|---|---|---|
| 2021 | 74.3°F | +1.5°F | 11.78 in |
| 2022 | 72.7°F | −0.1°F | 3.50 in |
| 2023 | 74.2°F | +1.4°F | 1.38 in |
| 2024 | 72.6°F | −0.2°F | 3.79 in |
| 2025 | 71.0°F | −1.8°F | 2.83 in |
| 2026 | 72.4°F | −0.4°F | 1.92 in |
Source: records: ACIS, NWS threaded record LSEthr; recent months: ACIS, station USW00014920. Records and recent months use complete months only.
How does August in La Crosse compare across Wisconsin?
Across the 165 places PlainClimate covers in Wisconsin, August normal highs run from 71°F in Laona to 83°F in Lake Geneva; La Crosse's is 83°F.
Source: NOAA NCEI 1991-2020 monthly normals for every station in the state.