Davenport, IA weather in August
In August, Davenport sees highs around 84°F and lows around 63°F: warm and often humid, with some rain. Rain falls on about 9 days. It is one of the warmest months in Davenport.
- Normal high
- 84°F
- Normal low
- 63°F
- Wet days
- 9
- 4.0 in total
- Muggy days
- 14
- dew point 65°F+
How August changes from start to finish
| August 1 | August 31 | |
|---|---|---|
| Normal high | 85°F | 82°F |
| Normal low | 65°F | 60°F |
| Chance of a wet day | 30% | 29% |
| Sunrise / sunset | 5:57 am / 8:20 pm | 6:27 am / 7:37 pm |
| Daylight | 14.4 h | 13.2 h |
Chance of a wet day: average for the first and last 7 days of the month. Times are local clock time (Central Time).
A typical August day
- 6 am65°Fdew point 62°F
- 9 am74°Fdew point 64°F
- Noon80°Fdew point 64°F
- 3 pm82°Fdew point 64°F
- 6 pm79°Fdew point 64°F
- 9 pm71°Fdew point 65°F
NOAA hourly normals (local standard time) from Moline Quad City Intl Airport (5 mi away); average wind 6 mph; clear or few clouds in 67% of daytime hours, mostly cloudy or overcast in 22%.
What kind of days to expect
- Comfortable dayshigh 65-80°F and dew point under 60°F5 of 31
- Hot dayshigh 90°F or more5 of 31
- Muggy daysdaily mean dew point 65°F or more14 of 31
- Wet daysat least 0.01 in of rain or melted snow9 of 31
- Notable rainat least 0.10 in6 of 31
- Freezing nightslow 32°F or below0 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 4.0 in; a dry August brings about 1.9 in and a wet one about 5.8 in (25th and 75th percentiles). About 3 days bring half an inch or more, and about 1 an inch or more.
How August varies from year to year
- Warmest August, 1991-20201995: average high 88°F
- Coolest August2004: average high 79°F
- Wettest August1997: 8.1 in
- Driest August2020: 0.1 in
- Highest reading99°F (August 2, 1991)
- Lowest reading45°F (August 31, 2009)
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 | 86°F | 84°F | 78°F |
| Normal low | 65°F | 63°F | 54°F |
| Wet days | 9 | 9 | 8 |
| Comfortable days | 3 | 5 | 14 |
| Daylight | 14.8 h | 13.8 h | 12.5 h |
Highs change by -2°F from July and -6°F into September.
Nearby alternatives in August
- Cooler: Rochester, MN197 mi · high 78°F · 10 wet days
How Davenport ranks in August
- Normal high227th warmest of 378 cities; 1st of 3 in Iowa
- Wet days209th driest of 378
- Comfortable days129th most of 341
What to pack for Davenport in August
- A rain jacket or umbrella – rain on about 9 days
Heating and cooling
August has 4 heating degree days and 265 cooling degree days (base 65°F), 4% of the year's total heating and cooling demand.
Questions
How hot is Davenport in August?
The normal high is 84°F and the normal low is 63°F. From 1991 to 2020 the hottest August reading was 99°F (August 2, 1991).
Does it rain a lot in Davenport in August?
About 9 days in August have at least 0.01 in of precipitation, and the normal total is 4.0 in. The wettest August in 1991-2020 was in 1997 (8.1 in); the driest was in 2020 (0.2 in).
Is August a good time to visit Davenport?
August ranks 6th of 12 months on our comfort score for Davenport (55 out of 100). It has about 5 comfortable days and about 5 days at 90°F or hotter. The best month is May.
Where the numbers come from
- Temperature, rain, snowfall, humidity and wind by hour and cloud cover: Moline Quad City Intl Airport (USW00014923), 4.9 mi SE of the city center, 592 ft . NOAA normals and daily records, 1991-2020.
- Snow depth: Clinton #1 (USC00131635), 25 mi NE of the city center, 585 ft . NOAA normals and daily records, 1991-2020.
- Frost dates: Rock Island L&D 15 (USC00117391), 0.8 mi ESE of the city center, 568 ft . NOAA normals and daily records, 1991-2020.
- Daily humidity and wind: Quad City International Airport (725440-14923), 5.9 mi SSE of the city center, 576 ft . Hourly observations, 1991-2020.