Marshalltown weather in July: Marshalltown, Iowa: normal highs, lows, rain and records for July
Marshalltown in July has a normal high of 83°F and a normal low of 62°F, a daily mean of 73°F, holding near 83°F all month. Measurable precipitation falls on 10 days in a normal July, 3.67 inches in all. (NOAA 1991-2020 normals)
In metric: a normal high of 28°C and low of 17°C, 93 mm of precipitation in July.
- NOAA stationMarshalltown Municipal Airport
- Station IDUSW00094988
- Location42.11°N 92.92°W
- Elevation974 ft (297 m)
- From the center5 miles
- Population27,886
- Jan 28° 10°
- Feb 32° 14°
- Mar 46° 26°
- Apr 60° 37°
- May 71° 49°
- Jun 81° 59°
- Jul 83° 62°
- Aug 81° 60°
- Sep 75° 51°
- Oct 62° 39°
- Nov 46° 26°
- Dec 33° 16°
Each month: normal high (large) and low, °F. Fill: the month's normal mean, colder blue to hotter red.
How warm is Marshalltown in July?
The normal high is 83°F and the normal low 62°F, for a daily mean of 72.6°F. July is 2.9°F warmer than June and 2.4°F warmer than August. July is the warmest month of the year in Marshalltown and the 5th wettest. From one year to the next July's mean temperature typically moves about 2.7°F either way (NOAA's standard deviation), so roughly two Julys 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 37%).
| Day | High | Low | Chance of 0.01 in | Chance of 0.10 in |
|---|---|---|---|---|
| July 1 | 83°F | 62°F | 37% | 21% |
| July 8 | 83°F | 62°F | 35% | 20% |
| July 15 | 83°F | 62°F | 34% | 19% |
| July 22 | 83°F | 62°F | 34% | 18% |
| July 31 | 83°F | 62°F | 36% | 19% |
Every day of July: normal high, low and chance of precipitation (warmest afternoon July 7, coldest night July 1)
| Day | High | Low | Chance of 0.01 in | Chance of 0.10 in | Daylight |
|---|---|---|---|---|---|
| July 1 | 83°F | 62°F | 37% | 21% | 15 h 10 min |
| July 2 | 83°F | 62°F | 37% | 21% | 15 h 10 min |
| July 3 | 83°F | 62°F | 36% | 21% | 15 h 10 min |
| July 4 | 83°F | 62°F | 36% | 20% | 15 h 10 min |
| July 5 | 83°F | 62°F | 36% | 20% | 15 h 10 min |
| July 6 | 83°F | 62°F | 36% | 20% | 15 h 10 min |
| July 7 | 83°F | 62°F | 35% | 20% | 15 h 10 min |
| July 8 | 83°F | 62°F | 35% | 20% | 15 h 10 min |
| July 9 | 83°F | 62°F | 35% | 19% | 15 h 10 min |
| July 10 | 83°F | 62°F | 35% | 19% | 15 h 10 min |
| July 11 | 83°F | 62°F | 34% | 19% | 15 h |
| July 12 | 83°F | 62°F | 34% | 19% | 15 h |
| July 13 | 83°F | 62°F | 34% | 19% | 15 h |
| July 14 | 83°F | 62°F | 34% | 19% | 15 h |
| July 15 | 83°F | 62°F | 34% | 19% | 15 h |
| July 16 | 83°F | 62°F | 34% | 18% | 15 h |
| July 17 | 83°F | 62°F | 34% | 18% | 15 h |
| July 18 | 83°F | 63°F | 34% | 18% | 14 h 50 min |
| July 19 | 83°F | 63°F | 34% | 18% | 14 h 50 min |
| July 20 | 83°F | 63°F | 34% | 18% | 14 h 50 min |
| July 21 | 83°F | 63°F | 34% | 18% | 14 h 50 min |
| July 22 | 83°F | 62°F | 34% | 18% | 14 h 50 min |
| July 23 | 83°F | 62°F | 34% | 18% | 14 h 50 min |
| July 24 | 83°F | 62°F | 34% | 19% | 14 h 40 min |
| July 25 | 83°F | 62°F | 35% | 19% | 14 h 40 min |
| July 26 | 83°F | 62°F | 35% | 19% | 14 h 40 min |
| July 27 | 83°F | 62°F | 35% | 19% | 14 h 40 min |
| July 28 | 83°F | 62°F | 35% | 19% | 14 h 40 min |
| July 29 | 83°F | 62°F | 35% | 19% | 14 h 30 min |
| July 30 | 83°F | 62°F | 36% | 19% | 14 h 30 min |
| July 31 | 83°F | 62°F | 36% | 19% | 14 h 30 min |
- Normal high
- 83°FJuly average
- Normal low
- 62°FJuly average
- Precipitation
- 3.67 inmonth total
- Days with precipitation
- 100.01 inch or more
- Days at 90°F or more
- 5
- 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
- 24
- Sunshine
- 81%of clear-sky sunlight (NASA)
Source: NOAA NCEI 1991-2020 daily normals, station USW00094988; monthly normals. Daylight is computed from the place's latitude with NOAA's solar equations.
Does it rain in Marshalltown in July?
On a given July day the chance of 0.01 inch or more is 35% on average, highest around July 1 (37%). In all, 3.67 in falls on 10 days of a normal July, 1 of them with an inch or more.
In a normal July in Marshalltown, 5 days reach 90°F.
Source: NOAA NCEI 1991-2020 daily and monthly normals, station USW00094988.
What are the records for July in Marshalltown?
The warmest July temperature on this station's record (since 1996) is 102°F, on July 25, 2012; the coldest is 44°F, on July 12, 2008. The wettest July brought 10.07 in (2025).
The July mean against the 1991-2020 normal of 72.6°F: 2021 73.2°F (+0.6), 2022 74.0°F (+1.4), 2023 72.3°F (−0.3), 2024 72.5°F (−0.1), 2025 74.3°F (+1.7), 2026 75.3°F (+2.7). 4 of 6 ran warmer than normal.
| July | Mean | Against normal | Precip. |
|---|---|---|---|
| 2021 | 73.2°F | +0.6°F | 1.37 in |
| 2022 | 74.0°F | +1.4°F | 2.99 in |
| 2023 | 72.3°F | −0.3°F | 2.91 in |
| 2024 | 72.5°F | −0.1°F | 9.64 in |
| 2025 | 74.3°F | +1.7°F | 10.07 in |
| 2026 | 75.3°F | +2.7°F | 6.55 in |
Source: records: ACIS, station USW00094988; recent months: ACIS, station USW00094988. Records and recent months use complete months only.
How does July in Marshalltown 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; Marshalltown's is 83°F.
Source: NOAA NCEI 1991-2020 monthly normals for every station in the state.