Oshkosh weather in August: Oshkosh, Wisconsin: normal highs, lows, rain and records for August
Oshkosh in August has a normal high of 79°F and a normal low of 60°F, a daily mean of 69°F, falling from 81°F on the 1st to 77°F by the 31st. Measurable precipitation falls on 11 days in a normal August, 3.20 inches in all. (NOAA 1991-2020 normals)
In metric: a normal high of 26°C and low of 15°C, 81 mm of precipitation in August.
- NOAA stationOshkosh Wittman Airport
- Station IDUSW00094855
- Location43.98°N 88.56°W
- Elevation782 ft (238 m)
- Population67,242
- Jan 26° 11°
- Feb 30° 14°
- Mar 42° 24°
- Apr 55° 36°
- May 67° 47°
- Jun 77° 57°
- Jul 81° 61°
- Aug 79° 60°
- Sep 72° 51°
- Oct 59° 40°
- Nov 44° 29°
- Dec 32° 18°
Each month: normal high (large) and low, °F. Fill: the month's normal mean, colder blue to hotter red.
How warm is Oshkosh in August?
The normal high is 79°F and the normal low 60°F, for a daily mean of 69.4°F. August is 1.9°F cooler than July and 7.7°F warmer than September. August is the 2nd warmest month of the year in Oshkosh and the 4th wettest. Across the month the normal high falls 4°F, from 81°F on August 1 to 77°F on August 31. From one year to the next August's mean temperature typically moves about 2.4°F either way (NOAA's standard deviation), so roughly two Augusts in three average between 67°F and 72°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 35%).
| Day | High | Low | Chance of 0.01 in | Chance of 0.10 in |
|---|---|---|---|---|
| August 1 | 81°F | 62°F | 35% | 22% |
| August 8 | 80°F | 61°F | 35% | 21% |
| August 15 | 80°F | 60°F | 35% | 21% |
| August 22 | 79°F | 59°F | 35% | 20% |
| August 31 | 77°F | 57°F | 34% | 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 | 81°F | 62°F | 35% | 22% | 14 h 40 min |
| August 2 | 81°F | 62°F | 35% | 22% | 14 h 40 min |
| August 3 | 81°F | 61°F | 35% | 22% | 14 h 30 min |
| August 4 | 81°F | 61°F | 35% | 22% | 14 h 30 min |
| August 5 | 81°F | 61°F | 35% | 22% | 14 h 30 min |
| August 6 | 80°F | 61°F | 35% | 22% | 14 h 30 min |
| August 7 | 80°F | 61°F | 35% | 22% | 14 h 20 min |
| August 8 | 80°F | 61°F | 35% | 21% | 14 h 20 min |
| August 9 | 80°F | 61°F | 35% | 21% | 14 h 20 min |
| August 10 | 80°F | 61°F | 35% | 21% | 14 h 20 min |
| August 11 | 80°F | 61°F | 35% | 21% | 14 h 10 min |
| August 12 | 80°F | 61°F | 35% | 21% | 14 h 10 min |
| August 13 | 80°F | 61°F | 35% | 21% | 14 h 10 min |
| August 14 | 80°F | 60°F | 35% | 21% | 14 h 10 min |
| August 15 | 80°F | 60°F | 35% | 21% | 14 h |
| August 16 | 79°F | 60°F | 35% | 21% | 14 h |
| August 17 | 79°F | 60°F | 35% | 21% | 14 h |
| August 18 | 79°F | 60°F | 35% | 21% | 14 h |
| August 19 | 79°F | 60°F | 35% | 21% | 13 h 50 min |
| August 20 | 79°F | 59°F | 35% | 20% | 13 h 50 min |
| August 21 | 79°F | 59°F | 35% | 20% | 13 h 50 min |
| August 22 | 79°F | 59°F | 35% | 20% | 13 h 40 min |
| August 23 | 78°F | 59°F | 35% | 20% | 13 h 40 min |
| August 24 | 78°F | 59°F | 35% | 20% | 13 h 40 min |
| August 25 | 78°F | 58°F | 35% | 20% | 13 h 40 min |
| August 26 | 78°F | 58°F | 35% | 20% | 13 h 30 min |
| August 27 | 78°F | 58°F | 35% | 20% | 13 h 30 min |
| August 28 | 78°F | 57°F | 35% | 20% | 13 h 30 min |
| August 29 | 77°F | 57°F | 34% | 20% | 13 h 30 min |
| August 30 | 77°F | 57°F | 34% | 20% | 13 h 20 min |
| August 31 | 77°F | 57°F | 34% | 20% | 13 h 20 min |
- Normal high
- 79°FAugust average
- Normal low
- 60°FAugust average
- Precipitation
- 3.20 inmonth total
- Days with precipitation
- 110.01 inch or more
- Days at 90°F or more
- 1
- Daylight
- 14 h 40 min to 13 h 20 minAugust 1 to August 31
- Days at 70°F or more
- 29
- Days at 80°F or more
- 15
- Sunshine
- 78%of clear-sky sunlight (NASA)
Source: NOAA NCEI 1991-2020 daily normals, station USW00094855; monthly normals. Daylight is computed from the place's latitude with NOAA's solar equations.
Does it rain in Oshkosh in August?
On a given August day the chance of 0.01 inch or more is 35% on average, highest around August 1 (35%). In all, 3.20 in falls on 11 days of a normal August, 1 of them with an inch or more.
In a normal August in Oshkosh, 1 days reach 90°F.
Source: NOAA NCEI 1991-2020 daily and monthly normals, station USW00094855.
What are the records for August in Oshkosh?
The warmest August temperature on this station's record (since 1996) is 98°F, on August 23, 2023; the coldest is 42°F, on August 21, 2004. The wettest August brought 6.56 in (2018).
The August mean against the 1991-2020 normal of 69.4°F: 2021 71.9°F (+2.5), 2022 70.3°F (+0.9), 2023 70.2°F (+0.8), 2024 70.3°F (+0.9), 2025 68.2°F (−1.2), 2026 70.1°F (+0.7). 5 of 6 ran warmer than normal.
| August | Mean | Against normal | Precip. |
|---|---|---|---|
| 2021 | 71.9°F | +2.5°F | 5.96 in |
| 2022 | 70.3°F | +0.9°F | 2.71 in |
| 2023 | 70.2°F | +0.8°F | 2.29 in |
| 2024 | 70.3°F | +0.9°F | 5.01 in |
| 2025 | 68.2°F | −1.2°F | 2.82 in |
| 2026 | 70.1°F | +0.7°F | 0.89 in |
Source: records: ACIS, station USW00094855; recent months: ACIS, station USW00094855. Records and recent months use complete months only.
How does August in Oshkosh 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; Oshkosh's is 79°F.
Source: NOAA NCEI 1991-2020 monthly normals for every station in the state.