Dubuque weather in July: Dubuque, Iowa: normal highs, lows, rain and records for July
Dubuque in July has a normal high of 82°F and a normal low of 62°F, a daily mean of 72°F, holding near 82°F all month. Measurable precipitation falls on 10 days in a normal July, 4.80 inches in all. (NOAA 1991-2020 normals)
In metric: a normal high of 28°C and low of 17°C, 122 mm of precipitation in July.
- NOAA stationDubuque Regional Airport
- Station IDUSW00094908
- Location42.40°N 90.70°W
- Elevation1,056 ft (322 m)
- Population58,987
- Jan 27° 11°
- Feb 31° 15°
- Mar 44° 26°
- Apr 58° 37°
- May 69° 49°
- Jun 79° 59°
- Jul 82° 62°
- Aug 80° 60°
- Sep 73° 52°
- Oct 60° 40°
- Nov 45° 28°
- Dec 32° 17°
Each month: normal high (large) and low, °F. Fill: the month's normal mean, colder blue to hotter red.
How warm is Dubuque in July?
The normal high is 82°F and the normal low 62°F, for a daily mean of 71.7°F. July is 3.2°F warmer than June and 1.9°F warmer than August. July is the warmest month of the year in Dubuque and the 2nd wettest. From one year to the next July's mean temperature typically moves about 2.9°F either way (NOAA's standard deviation), so roughly two Julys in three average between 69°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 36%).
| Day | High | Low | Chance of 0.01 in | Chance of 0.10 in |
|---|---|---|---|---|
| July 1 | 81°F | 62°F | 36% | 23% |
| July 8 | 82°F | 62°F | 34% | 22% |
| July 15 | 82°F | 62°F | 32% | 21% |
| July 22 | 82°F | 62°F | 31% | 20% |
| July 31 | 81°F | 62°F | 30% | 20% |
Every day of July: normal high, low and chance of precipitation (warmest afternoon July 8, coldest night July 31)
| Day | High | Low | Chance of 0.01 in | Chance of 0.10 in | Daylight |
|---|---|---|---|---|---|
| July 1 | 81°F | 62°F | 36% | 23% | 15 h 10 min |
| July 2 | 81°F | 62°F | 36% | 23% | 15 h 10 min |
| July 3 | 81°F | 62°F | 35% | 23% | 15 h 10 min |
| July 4 | 82°F | 62°F | 35% | 23% | 15 h 10 min |
| July 5 | 82°F | 62°F | 35% | 22% | 15 h 10 min |
| July 6 | 82°F | 62°F | 34% | 22% | 15 h 10 min |
| July 7 | 82°F | 62°F | 34% | 22% | 15 h 10 min |
| July 8 | 82°F | 62°F | 34% | 22% | 15 h 10 min |
| July 9 | 82°F | 62°F | 34% | 22% | 15 h 10 min |
| July 10 | 82°F | 62°F | 33% | 21% | 15 h 10 min |
| July 11 | 82°F | 62°F | 33% | 21% | 15 h 10 min |
| July 12 | 82°F | 62°F | 33% | 21% | 15 h |
| July 13 | 82°F | 62°F | 33% | 21% | 15 h |
| July 14 | 82°F | 62°F | 32% | 21% | 15 h |
| July 15 | 82°F | 62°F | 32% | 21% | 15 h |
| July 16 | 82°F | 62°F | 32% | 21% | 15 h |
| July 17 | 82°F | 62°F | 32% | 21% | 15 h |
| July 18 | 82°F | 62°F | 32% | 21% | 15 h |
| July 19 | 82°F | 62°F | 32% | 21% | 14 h 50 min |
| July 20 | 82°F | 62°F | 32% | 21% | 14 h 50 min |
| July 21 | 82°F | 62°F | 31% | 20% | 14 h 50 min |
| July 22 | 82°F | 62°F | 31% | 20% | 14 h 50 min |
| July 23 | 82°F | 62°F | 31% | 20% | 14 h 50 min |
| July 24 | 81°F | 62°F | 31% | 20% | 14 h 50 min |
| July 25 | 81°F | 62°F | 31% | 20% | 14 h 40 min |
| July 26 | 81°F | 62°F | 31% | 20% | 14 h 40 min |
| July 27 | 81°F | 62°F | 30% | 20% | 14 h 40 min |
| July 28 | 81°F | 62°F | 30% | 20% | 14 h 40 min |
| July 29 | 81°F | 62°F | 30% | 20% | 14 h 40 min |
| July 30 | 81°F | 62°F | 30% | 20% | 14 h 30 min |
| July 31 | 81°F | 62°F | 30% | 20% | 14 h 30 min |
- Normal high
- 82°FJuly average
- Normal low
- 62°FJuly average
- Precipitation
- 4.80 inmonth total
- Days with precipitation
- 100.01 inch or more
- Days at 90°F or more
- 3
- Daylight
- 15 h 10 min to 14 h 30 minJuly 1 to July 31
- Days at 70°F or more
- 30
- Days at 80°F or more
- 20
- Sunshine
- 80%of clear-sky sunlight (NASA)
Source: NOAA NCEI 1991-2020 daily normals, station USW00094908; monthly normals. Daylight is computed from the place's latitude with NOAA's solar equations.
Does it rain in Dubuque in July?
On a given July day the chance of 0.01 inch or more is 32% on average, highest around July 1 (36%). In all, 4.80 in falls on 10 days of a normal July, 1 of them with an inch or more.
In a normal July in Dubuque, 3 days reach 90°F.
Source: NOAA NCEI 1991-2020 daily and monthly normals, station USW00094908.
How humid and windy is Dubuque in July?
At 3 p.m. the normal temperature is 80°F with 58% relative humidity and a dew point of 63°F; at 6 a.m. it is 64°F with 90% humidity. The wind averages 7.0 mph, most often from the west-southwest in the afternoon.
| Time | Temperature | Dew point | Humidity | Wind | Clear or few clouds |
|---|---|---|---|---|---|
| 6 a.m. | 64°F | 62°F | 90% | 5.4 mph | 67% |
| 9 a.m. | 73°F | 64°F | 73% | 8.3 mph | 71% |
| noon | 78°F | 63°F | 61% | 9.3 mph | 56% |
| 3 p.m. | 80°F | 63°F | 58% | 9.5 mph | 65% |
| 6 p.m. | 77°F | 64°F | 64% | 7.5 mph | 70% |
| 9 p.m. | 69°F | 64°F | 83% | 5.1 mph | 85% |
Source: NOAA NCEI 1991-2020 hourly normals, station USW00094908. 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 Dubuque?
The warmest July temperature on Dubuque's official record (since 1874) is 110°F, on July 14, 1936; the coldest is 40°F, on July 9, 1895. The wettest July brought 16.01 in (2011).
The July mean against the 1991-2020 normal of 71.7°F: 2021 72.2°F (+0.5), 2022 72.8°F (+1.1), 2023 71.9°F (+0.2), 2024 71.7°F (at normal), 2025 74.5°F (+2.8), 2026 75.3°F (+3.6). 5 of 6 ran warmer than normal.
| July | Mean | Against normal | Precip. |
|---|---|---|---|
| 2021 | 72.2°F | +0.5°F | 3.23 in |
| 2022 | 72.8°F | +1.1°F | 4.91 in |
| 2023 | 71.9°F | +0.2°F | 4.27 in |
| 2024 | 71.7°F | at normal | 5.29 in |
| 2025 | 74.5°F | +2.8°F | 8.30 in |
| 2026 | 75.3°F | +3.6°F | 5.28 in |
Source: records: ACIS, NWS threaded record DBQthr; recent months: ACIS, station USW00094908. Records and recent months use complete months only.
How does July in Dubuque 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; Dubuque's is 82°F.
Source: NOAA NCEI 1991-2020 monthly normals for every station in the state.