Peoria weather in July: Peoria, Illinois: normal highs, lows, rain and records for July
Peoria 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 9 days in a normal July, 3.53 inches in all. (NOAA 1991-2020 normals)
In metric: a normal high of 30°C and low of 19°C, 90 mm of precipitation in July.
- NOAA stationGeneral Wayne A. Downing International Airport
- Station IDUSW00014842
- Location40.67°N 89.68°W
- Elevation650 ft (198 m)
- From the center7 miles
- Population111,696
- Jan 34° 18°
- Feb 39° 21°
- Mar 51° 32°
- Apr 64° 42°
- May 74° 53°
- Jun 83° 62°
- Jul 86° 66°
- Aug 85° 64°
- Sep 78° 56°
- Oct 65° 44°
- Nov 51° 33°
- Dec 39° 23°
Each month: normal high (large) and low, °F. Fill: the month's normal mean, colder blue to hotter red.
How warm is Peoria in July?
The normal high is 86°F and the normal low 66°F, for a daily mean of 76.3°F. July is 3.5°F warmer than June and 1.8°F warmer than August. July is the warmest month of the year in Peoria and the 4th 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 74°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 31%).
| Day | High | Low | Chance of 0.01 in | Chance of 0.10 in |
|---|---|---|---|---|
| July 1 | 86°F | 66°F | 31% | 20% |
| July 8 | 87°F | 66°F | 30% | 19% |
| July 15 | 87°F | 67°F | 29% | 18% |
| July 22 | 86°F | 66°F | 29% | 18% |
| July 31 | 86°F | 66°F | 28% | 18% |
Every day of July: normal high, low and chance of precipitation (warmest afternoon July 11, coldest night July 1)
| Day | High | Low | Chance of 0.01 in | Chance of 0.10 in | Daylight |
|---|---|---|---|---|---|
| July 1 | 86°F | 66°F | 31% | 20% | 15 h |
| July 2 | 86°F | 66°F | 31% | 20% | 15 h |
| July 3 | 86°F | 66°F | 31% | 20% | 15 h |
| July 4 | 86°F | 66°F | 31% | 20% | 15 h |
| July 5 | 86°F | 66°F | 31% | 20% | 15 h |
| July 6 | 86°F | 66°F | 31% | 20% | 15 h |
| July 7 | 87°F | 66°F | 31% | 19% | 15 h |
| July 8 | 87°F | 66°F | 30% | 19% | 15 h |
| July 9 | 87°F | 66°F | 30% | 19% | 15 h |
| July 10 | 87°F | 67°F | 30% | 19% | 15 h |
| July 11 | 87°F | 67°F | 30% | 19% | 14 h 50 min |
| July 12 | 87°F | 67°F | 30% | 19% | 14 h 50 min |
| July 13 | 87°F | 67°F | 30% | 19% | 14 h 50 min |
| July 14 | 87°F | 67°F | 29% | 19% | 14 h 50 min |
| July 15 | 87°F | 67°F | 29% | 18% | 14 h 50 min |
| July 16 | 87°F | 67°F | 29% | 18% | 14 h 50 min |
| July 17 | 87°F | 67°F | 29% | 18% | 14 h 50 min |
| July 18 | 86°F | 67°F | 29% | 18% | 14 h 50 min |
| July 19 | 86°F | 67°F | 29% | 18% | 14 h 40 min |
| July 20 | 86°F | 67°F | 29% | 18% | 14 h 40 min |
| July 21 | 86°F | 66°F | 29% | 18% | 14 h 40 min |
| July 22 | 86°F | 66°F | 29% | 18% | 14 h 40 min |
| July 23 | 86°F | 66°F | 28% | 18% | 14 h 40 min |
| July 24 | 86°F | 66°F | 28% | 18% | 14 h 40 min |
| July 25 | 86°F | 66°F | 28% | 18% | 14 h 30 min |
| July 26 | 86°F | 66°F | 28% | 18% | 14 h 30 min |
| July 27 | 86°F | 66°F | 28% | 18% | 14 h 30 min |
| July 28 | 86°F | 66°F | 28% | 18% | 14 h 30 min |
| July 29 | 86°F | 66°F | 28% | 18% | 14 h 30 min |
| July 30 | 86°F | 66°F | 28% | 18% | 14 h 30 min |
| July 31 | 86°F | 66°F | 28% | 18% | 14 h 20 min |
- Normal high
- 86°FJuly average
- Normal low
- 66°FJuly average
- Precipitation
- 3.53 inmonth total
- Days with precipitation
- 90.01 inch or more
- Days at 90°F or more
- 9
- Daylight
- 15 h to 14 h 20 minJuly 1 to July 31
- Days at 70°F or more
- 31
- Days at 80°F or more
- 26
- Sunshine
- 83%of clear-sky sunlight (NASA)
Source: NOAA NCEI 1991-2020 daily normals, station USW00014842; monthly normals. Daylight is computed from the place's latitude with NOAA's solar equations.
Does it rain in Peoria in July?
On a given July day the chance of 0.01 inch or more is 29% on average, highest around July 1 (31%). In all, 3.53 in falls on 9 days of a normal July, 1 of them with an inch or more.
In a normal July in Peoria, 9 days reach 90°F.
Source: NOAA NCEI 1991-2020 daily and monthly normals, station USW00014842.
How humid and windy is Peoria in July?
At 3 p.m. the normal temperature is 83°F with 54% relative humidity and a dew point of 65°F; at 6 a.m. it is 68°F with 87% humidity. The wind averages 5.8 mph, most often from the southwest in the afternoon.
| Time | Temperature | Dew point | Humidity | Wind | Clear or few clouds |
|---|---|---|---|---|---|
| 6 a.m. | 68°F | 64°F | 87% | 3.8 mph | 71% |
| 9 a.m. | 76°F | 65°F | 69% | 6.9 mph | 68% |
| noon | 81°F | 65°F | 57% | 8.0 mph | 56% |
| 3 p.m. | 83°F | 65°F | 54% | 8.7 mph | 60% |
| 6 p.m. | 80°F | 65°F | 60% | 6.8 mph | 72% |
| 9 p.m. | 73°F | 66°F | 77% | 4.2 mph | 78% |
Source: NOAA NCEI 1991-2020 hourly normals, station USW00014842. 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 Peoria?
The warmest July temperature on Peoria's official record (since 1883) is 113°F, on July 15, 1936; the coldest is 46°F, on July 26, 1911. The wettest July brought 10.15 in (1993).
The July mean against the 1991-2020 normal of 76.3°F: 2021 75.4°F (−0.9), 2022 76.4°F (+0.1), 2023 76.6°F (+0.3), 2024 75.6°F (−0.7), 2025 79.3°F (+3.0), 2026 77.3°F (+1.0). 4 of 6 ran warmer than normal.
| July | Mean | Against normal | Precip. |
|---|---|---|---|
| 2021 | 75.4°F | −0.9°F | 4.07 in |
| 2022 | 76.4°F | +0.1°F | 1.87 in |
| 2023 | 76.6°F | +0.3°F | 4.14 in |
| 2024 | 75.6°F | −0.7°F | 3.58 in |
| 2025 | 79.3°F | +3.0°F | 3.46 in |
| 2026 | 77.3°F | +1.0°F | 1.47 in |
Source: records: ACIS, NWS threaded record PIAthr; recent months: ACIS, station USW00014842. Records and recent months use complete months only.
How does July in Peoria compare across Illinois?
Across the 144 places PlainClimate covers in Illinois, July normal highs run from 81°F in Barrington to 90°F in Belleville; Peoria's is 86°F.
Source: NOAA NCEI 1991-2020 monthly normals for every station in the state.