Des Moines weather in July: Des Moines, Iowa: normal highs, lows, rain and records for July
Des Moines in July has a normal high of 86°F and a normal low of 66°F, a daily mean of 76°F, holding near 86°F all month. Measurable precipitation falls on 10 days in a normal July, 3.82 inches in all. (NOAA 1991-2020 normals)
In metric: a normal high of 30°C and low of 19°C, 97 mm of precipitation in July.
- NOAA stationDes Moines International Airport
- Station IDUSW00014933
- Location41.53°N 93.65°W
- Elevation957 ft (292 m)
- From the center3 miles
- Population213,096
- Jan 31° 14°
- Feb 36° 18°
- Mar 49° 30°
- Apr 62° 41°
- May 72° 52°
- Jun 82° 62°
- Jul 86° 66°
- Aug 84° 64°
- Sep 77° 55°
- Oct 63° 43°
- Nov 48° 30°
- Dec 36° 20°
Each month: normal high (large) and low, °F. Fill: the month's normal mean, colder blue to hotter red.
How warm is Des Moines in July?
The normal high is 86°F and the normal low 66°F, for a daily mean of 76.0°F. July is 3.8°F warmer than June and 2.1°F warmer than August. July is the warmest month of the year in Des Moines and the 5th wettest. From one year to the next July's mean temperature typically moves about 2.8°F either way (NOAA's standard deviation), so roughly two Julys in three average between 73°F and 79°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 34%).
| Day | High | Low | Chance of 0.01 in | Chance of 0.10 in |
|---|---|---|---|---|
| July 1 | 85°F | 66°F | 34% | 22% |
| July 8 | 86°F | 66°F | 33% | 21% |
| July 15 | 86°F | 67°F | 32% | 21% |
| July 22 | 86°F | 67°F | 31% | 21% |
| July 31 | 85°F | 66°F | 31% | 21% |
Every day of July: normal high, low and chance of precipitation (warmest afternoon July 16, coldest night July 1)
| Day | High | Low | Chance of 0.01 in | Chance of 0.10 in | Daylight |
|---|---|---|---|---|---|
| July 1 | 85°F | 66°F | 34% | 22% | 15 h 10 min |
| July 2 | 85°F | 66°F | 34% | 22% | 15 h 10 min |
| July 3 | 85°F | 66°F | 34% | 22% | 15 h 10 min |
| July 4 | 85°F | 66°F | 33% | 21% | 15 h 10 min |
| July 5 | 85°F | 66°F | 33% | 21% | 15 h 10 min |
| July 6 | 85°F | 66°F | 33% | 21% | 15 h 10 min |
| July 7 | 86°F | 66°F | 33% | 21% | 15 h |
| July 8 | 86°F | 66°F | 33% | 21% | 15 h |
| July 9 | 86°F | 66°F | 32% | 21% | 15 h |
| July 10 | 86°F | 66°F | 32% | 21% | 15 h |
| July 11 | 86°F | 66°F | 32% | 21% | 15 h |
| July 12 | 86°F | 67°F | 32% | 21% | 15 h |
| July 13 | 86°F | 67°F | 32% | 21% | 15 h |
| July 14 | 86°F | 67°F | 32% | 21% | 15 h |
| July 15 | 86°F | 67°F | 32% | 21% | 15 h |
| July 16 | 86°F | 67°F | 31% | 21% | 14 h 50 min |
| July 17 | 86°F | 67°F | 31% | 21% | 14 h 50 min |
| July 18 | 86°F | 67°F | 31% | 21% | 14 h 50 min |
| July 19 | 86°F | 67°F | 31% | 21% | 14 h 50 min |
| July 20 | 86°F | 67°F | 31% | 21% | 14 h 50 min |
| July 21 | 86°F | 67°F | 31% | 21% | 14 h 50 min |
| July 22 | 86°F | 67°F | 31% | 21% | 14 h 40 min |
| July 23 | 86°F | 67°F | 31% | 21% | 14 h 40 min |
| July 24 | 86°F | 67°F | 31% | 21% | 14 h 40 min |
| July 25 | 86°F | 67°F | 31% | 21% | 14 h 40 min |
| July 26 | 86°F | 67°F | 31% | 21% | 14 h 40 min |
| July 27 | 86°F | 67°F | 31% | 21% | 14 h 40 min |
| July 28 | 86°F | 67°F | 31% | 21% | 14 h 30 min |
| July 29 | 86°F | 67°F | 31% | 21% | 14 h 30 min |
| July 30 | 85°F | 66°F | 31% | 21% | 14 h 30 min |
| July 31 | 85°F | 66°F | 31% | 21% | 14 h 30 min |
- Normal high
- 86°FJuly average
- Normal low
- 66°FJuly average
- Precipitation
- 3.82 inmonth total
- Days with precipitation
- 100.01 inch or more
- Days at 90°F or more
- 9
- Daylight
- 15 h 10 min to 14 h 30 minJuly 1 to July 31
- Days at 70°F or more
- 31
- Days at 80°F or more
- 26
- Sunshine
- 81%of clear-sky sunlight (NASA)
Source: NOAA NCEI 1991-2020 daily normals, station USW00014933; monthly normals. Daylight is computed from the place's latitude with NOAA's solar equations.
Does it rain in Des Moines in July?
On a given July day the chance of 0.01 inch or more is 32% on average, highest around July 1 (34%). In all, 3.82 in falls on 10 days of a normal July, 1 of them with an inch or more.
In a normal July in Des Moines, 9 days reach 90°F.
Source: NOAA NCEI 1991-2020 daily and monthly normals, station USW00014933.
How humid and windy is Des Moines in July?
At 3 p.m. the normal temperature is 83°F with 53% relative humidity and a dew point of 64°F; at 6 a.m. it is 68°F with 85% humidity. The wind averages 7.6 mph, most often from the south-southwest in the afternoon.
| Time | Temperature | Dew point | Humidity | Wind | Clear or few clouds |
|---|---|---|---|---|---|
| 6 a.m. | 68°F | 63°F | 85% | 5.9 mph | 37% |
| 9 a.m. | 75°F | 65°F | 70% | 8.0 mph | 39% |
| noon | 81°F | 65°F | 58% | 9.6 mph | 27% |
| 3 p.m. | 83°F | 64°F | 53% | 10.0 mph | 31% |
| 6 p.m. | 81°F | 64°F | 57% | 8.7 mph | 38% |
| 9 p.m. | 75°F | 65°F | 71% | 6.4 mph | 62% |
Source: NOAA NCEI 1991-2020 hourly normals, station USW00014933. 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 July in Des Moines?
The warmest July temperature on Des Moines's official record (since 1878) is 110°F, on July 25, 1936; the coldest is 47°F, on July 30, 1971. The wettest July brought 10.62 in (2025).
The July mean against the 1991-2020 normal of 76.0°F: 2021 76.4°F (+0.4), 2022 77.3°F (+1.3), 2023 75.6°F (−0.4), 2024 75.7°F (−0.3), 2025 77.1°F (+1.1), 2026 78.4°F (+2.4). 4 of 6 ran warmer than normal.
| July | Mean | Against normal | Precip. |
|---|---|---|---|
| 2021 | 76.4°F | +0.4°F | 5.86 in |
| 2022 | 77.3°F | +1.3°F | 2.25 in |
| 2023 | 75.6°F | −0.4°F | 2.32 in |
| 2024 | 75.7°F | −0.3°F | 8.99 in |
| 2025 | 77.1°F | +1.1°F | 10.62 in |
| 2026 | 78.4°F | +2.4°F | 8.47 in |
Source: records: ACIS, NWS threaded record DSMthr; recent months: ACIS, station USW00014933. Records and recent months use complete months only.
How does July in Des Moines compare across Iowa?
Across the 132 places PlainClimate covers in Iowa, July normal highs run from 79°F in Northwood to 87°F in Glenwood; Des Moines's is 86°F.
Source: NOAA NCEI 1991-2020 monthly normals for every station in the state.