Quincy weather in July: Quincy, Illinois: normal highs, lows, rain and records for July
Quincy in July has a normal high of 86°F and a normal low of 67°F, a daily mean of 76°F, holding near 86°F all month. Measurable precipitation falls on 9 days in a normal July, 3.49 inches in all. (NOAA 1991-2020 normals)
In metric: a normal high of 30°C and low of 19°C, 89 mm of precipitation in July.
- NOAA stationQuincy Regional Airport
- Station IDUSW00093989
- Location39.94°N 91.19°W
- Elevation769 ft (234 m)
- From the center10 miles
- Population38,786
- Jan 35° 19°
- Feb 40° 23°
- Mar 52° 32°
- Apr 64° 43°
- May 73° 54°
- Jun 82° 63°
- Jul 86° 67°
- Aug 85° 65°
- Sep 78° 56°
- Oct 65° 45°
- Nov 51° 33°
- Dec 39° 24°
Each month: normal high (large) and low, °F. Fill: the month's normal mean, colder blue to hotter red.
How warm is Quincy in July?
The normal high is 86°F and the normal low 67°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 Quincy 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 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 32%).
| Day | High | Low | Chance of 0.01 in | Chance of 0.10 in |
|---|---|---|---|---|
| July 1 | 86°F | 66°F | 32% | 21% |
| July 8 | 86°F | 67°F | 30% | 20% |
| July 15 | 86°F | 67°F | 29% | 19% |
| July 22 | 86°F | 67°F | 29% | 19% |
| July 31 | 86°F | 66°F | 28% | 18% |
Every day of July: normal high, low and chance of precipitation (warmest afternoon July 12, coldest night July 1)
| Day | High | Low | Chance of 0.01 in | Chance of 0.10 in | Daylight |
|---|---|---|---|---|---|
| July 1 | 86°F | 66°F | 32% | 21% | 15 h |
| July 2 | 86°F | 66°F | 31% | 21% | 15 h |
| July 3 | 86°F | 66°F | 31% | 21% | 15 h |
| July 4 | 86°F | 66°F | 31% | 21% | 15 h |
| July 5 | 86°F | 66°F | 31% | 21% | 15 h |
| July 6 | 86°F | 66°F | 31% | 21% | 14 h 50 min |
| July 7 | 86°F | 66°F | 31% | 20% | 14 h 50 min |
| July 8 | 86°F | 67°F | 30% | 20% | 14 h 50 min |
| July 9 | 86°F | 67°F | 30% | 20% | 14 h 50 min |
| July 10 | 86°F | 67°F | 30% | 20% | 14 h 50 min |
| July 11 | 86°F | 67°F | 30% | 20% | 14 h 50 min |
| July 12 | 86°F | 67°F | 30% | 20% | 14 h 50 min |
| July 13 | 86°F | 67°F | 30% | 19% | 14 h 50 min |
| July 14 | 86°F | 67°F | 30% | 19% | 14 h 50 min |
| July 15 | 86°F | 67°F | 29% | 19% | 14 h 50 min |
| July 16 | 86°F | 67°F | 29% | 19% | 14 h 40 min |
| July 17 | 86°F | 67°F | 29% | 19% | 14 h 40 min |
| July 18 | 86°F | 67°F | 29% | 19% | 14 h 40 min |
| July 19 | 86°F | 67°F | 29% | 19% | 14 h 40 min |
| July 20 | 86°F | 67°F | 29% | 19% | 14 h 40 min |
| July 21 | 86°F | 67°F | 29% | 19% | 14 h 40 min |
| July 22 | 86°F | 67°F | 29% | 19% | 14 h 40 min |
| July 23 | 86°F | 67°F | 29% | 18% | 14 h 30 min |
| July 24 | 86°F | 67°F | 29% | 18% | 14 h 30 min |
| July 25 | 86°F | 67°F | 29% | 18% | 14 h 30 min |
| July 26 | 86°F | 67°F | 29% | 18% | 14 h 30 min |
| July 27 | 86°F | 67°F | 29% | 18% | 14 h 30 min |
| July 28 | 86°F | 66°F | 29% | 18% | 14 h 30 min |
| July 29 | 86°F | 66°F | 29% | 18% | 14 h 20 min |
| July 30 | 86°F | 66°F | 29% | 18% | 14 h 20 min |
| July 31 | 86°F | 66°F | 28% | 18% | 14 h 20 min |
- Normal high
- 86°FJuly average
- Normal low
- 67°FJuly average
- Precipitation
- 3.49 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
- 82%of clear-sky sunlight (NASA)
Source: NOAA NCEI 1991-2020 daily normals, station USW00093989; monthly normals. Daylight is computed from the place's latitude with NOAA's solar equations.
Does it rain in Quincy in July?
On a given July day the chance of 0.01 inch or more is 30% on average, highest around July 1 (32%). In all, 3.49 in falls on 9 days of a normal July, 1 of them with an inch or more.
In a normal July in Quincy, 9 days reach 90°F.
Source: NOAA NCEI 1991-2020 daily and monthly normals, station USW00093989.
What are the records for July in Quincy?
The warmest July temperature on Quincy's official record (since 1901) is 114°F, on July 15, 1936; the coldest is 47°F, on July 14, 1950. The wettest July brought 13.21 in (1981).
The July mean against the 1991-2020 normal of 76.3°F: 2021 75.6°F (−0.7), 2022 76.5°F (+0.2), 2023 77.0°F (+0.7), 2024 75.5°F (−0.8), 2025 78.0°F (+1.7), 2026 78.0°F (+1.7). 4 of 6 ran warmer than normal.
| July | Mean | Against normal | Precip. |
|---|---|---|---|
| 2021 | 75.6°F | −0.7°F | 4.24 in |
| 2022 | 76.5°F | +0.2°F | 5.73 in |
| 2023 | 77.0°F | +0.7°F | 2.91 in |
| 2024 | 75.5°F | −0.8°F | 5.80 in |
| 2025 | 78.0°F | +1.7°F | 6.23 in |
| 2026 | 78.0°F | +1.7°F | 3.10 in |
Source: records: ACIS, NWS threaded record UINthr; recent months: ACIS, station USW00093989. Records and recent months use complete months only.
How does July in Quincy 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; Quincy's is 86°F.
Source: NOAA NCEI 1991-2020 monthly normals for every station in the state.