Davenport weather in August: Davenport, Iowa: normal highs, lows, rain and records for August
Davenport in August has a normal high of 82°F and a normal low of 62°F, a daily mean of 72°F, falling from 83°F on the 1st to 80°F by the 31st. Measurable precipitation falls on 13 days in a normal August, 3.96 inches in all. (NOAA 1991-2020 normals)
In metric: a normal high of 28°C and low of 16°C, 101 mm of precipitation in August.
- NOAA stationDavenport
- Station IDUSW00094982
- Location41.61°N 90.58°W
- Elevation754 ft (230 m)
- Population100,938
- Jan 30° 14°
- Feb 34° 18°
- Mar 48° 29°
- Apr 61° 39°
- May 73° 51°
- Jun 81° 61°
- Jul 84° 64°
- Aug 82° 62°
- Sep 76° 53°
- Oct 63° 42°
- Nov 48° 30°
- Dec 35° 20°
Each month: normal high (large) and low, °F. Fill: the month's normal mean, colder blue to hotter red.
How warm is Davenport in August?
The normal high is 82°F and the normal low 62°F, for a daily mean of 71.7°F. August is 2.0°F cooler than July and 7.1°F warmer than September. August is the 2nd warmest month of the year in Davenport and the 4th wettest. Across the month the normal high falls 3°F, from 83°F on August 1 to 80°F on August 31. From one year to the next August's mean temperature typically moves about 2.6°F either way (NOAA's standard deviation), so roughly two Augusts in three average between 69°F and 74°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 42%).
| Day | High | Low | Chance of 0.01 in | Chance of 0.10 in |
|---|---|---|---|---|
| August 1 | 83°F | 63°F | 39% | 19% |
| August 8 | 83°F | 63°F | 41% | 19% |
| August 15 | 82°F | 62°F | 42% | 19% |
| August 22 | 82°F | 61°F | 41% | 19% |
| August 31 | 80°F | 58°F | 39% | 18% |
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 | 83°F | 63°F | 39% | 19% | 14 h 30 min |
| August 2 | 83°F | 63°F | 39% | 19% | 14 h 20 min |
| August 3 | 83°F | 63°F | 39% | 19% | 14 h 20 min |
| August 4 | 83°F | 63°F | 39% | 19% | 14 h 20 min |
| August 5 | 83°F | 63°F | 40% | 19% | 14 h 20 min |
| August 6 | 83°F | 63°F | 40% | 19% | 14 h 20 min |
| August 7 | 83°F | 63°F | 40% | 19% | 14 h 10 min |
| August 8 | 83°F | 63°F | 41% | 19% | 14 h 10 min |
| August 9 | 83°F | 63°F | 41% | 19% | 14 h 10 min |
| August 10 | 83°F | 63°F | 41% | 19% | 14 h 10 min |
| August 11 | 83°F | 63°F | 41% | 19% | 14 h |
| August 12 | 83°F | 62°F | 41% | 19% | 14 h |
| August 13 | 82°F | 62°F | 41% | 19% | 14 h |
| August 14 | 82°F | 62°F | 41% | 19% | 14 h |
| August 15 | 82°F | 62°F | 42% | 19% | 13 h 50 min |
| August 16 | 82°F | 62°F | 42% | 19% | 13 h 50 min |
| August 17 | 82°F | 62°F | 42% | 19% | 13 h 50 min |
| August 18 | 82°F | 62°F | 42% | 19% | 13 h 50 min |
| August 19 | 82°F | 61°F | 42% | 19% | 13 h 40 min |
| August 20 | 82°F | 61°F | 41% | 19% | 13 h 40 min |
| August 21 | 82°F | 61°F | 41% | 19% | 13 h 40 min |
| August 22 | 82°F | 61°F | 41% | 19% | 13 h 40 min |
| August 23 | 81°F | 61°F | 41% | 19% | 13 h 30 min |
| August 24 | 81°F | 60°F | 41% | 19% | 13 h 30 min |
| August 25 | 81°F | 60°F | 41% | 19% | 13 h 30 min |
| August 26 | 81°F | 60°F | 41% | 19% | 13 h 30 min |
| August 27 | 81°F | 60°F | 41% | 19% | 13 h 20 min |
| August 28 | 81°F | 59°F | 40% | 19% | 13 h 20 min |
| August 29 | 81°F | 59°F | 40% | 19% | 13 h 20 min |
| August 30 | 80°F | 59°F | 40% | 19% | 13 h 20 min |
| August 31 | 80°F | 58°F | 39% | 18% | 13 h 10 min |
- Normal high
- 82°FAugust average
- Normal low
- 62°FAugust average
- Precipitation
- 3.96 inmonth total
- Days with precipitation
- 130.01 inch or more
- Days at 90°F or more
- 2
- Daylight
- 14 h 30 min to 13 h 10 minAugust 1 to August 31
- Days at 70°F or more
- 31
- Days at 80°F or more
- 21
- Sunshine
- 80%of clear-sky sunlight (NASA)
Source: NOAA NCEI 1991-2020 daily normals, station USW00094982; monthly normals. Daylight is computed from the place's latitude with NOAA's solar equations.
Does it rain in Davenport in August?
On a given August day the chance of 0.01 inch or more is 41% on average, highest around August 16 (42%). In all, 3.96 in falls on 13 days of a normal August, 1 of them with an inch or more.
In a normal August in Davenport, 2 days reach 90°F.
Source: NOAA NCEI 1991-2020 daily and monthly normals, station USW00094982.
What are the records for August in Davenport?
The warmest August temperature on this station's record (since 1996) is 100°F, on August 24, 2023; the coldest is 42°F, on August 13, 2004. The wettest August brought 9.73 in (2016).
The August mean against the 1991-2020 normal of 71.7°F: 2021 73.6°F (+1.9), 2022 71.8°F (+0.1), 2023 72.8°F (+1.1), 2024 71.8°F (+0.1), 2025 71.8°F (+0.1), 2026 72.3°F (+0.6). 6 of 6 ran warmer than normal.
| August | Mean | Against normal | Precip. |
|---|---|---|---|
| 2021 | 73.6°F | +1.9°F | 1.69 in |
| 2022 | 71.8°F | +0.1°F | 3.51 in |
| 2023 | 72.8°F | +1.1°F | 1.90 in |
| 2024 | 71.8°F | +0.1°F | 4.64 in |
| 2025 | 71.8°F | +0.1°F | 3.55 in |
| 2026 | 72.3°F | +0.6°F | 4.95 in |
Source: records: ACIS, station USW00094982; recent months: ACIS, station USW00094982. Records and recent months use complete months only.
How does August in Davenport compare across Iowa?
Across the 132 places PlainClimate covers in Iowa, August normal highs run from 76°F in Northwood to 85°F in Donnellson; Davenport's is 82°F.
Source: NOAA NCEI 1991-2020 monthly normals for every station in the state.