Quincy weather in October: Quincy, Illinois: normal highs, lows, rain and records for October
Quincy in October has a normal high of 65°F and a normal low of 45°F, a daily mean of 55°F, falling from 72°F on the 1st to 58°F by the 31st. Measurable precipitation falls on 9 days in a normal October, 3.05 inches in all. (NOAA 1991-2020 normals)
In metric: a normal high of 19°C and low of 7°C, 77 mm of precipitation in October.
- 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 October?
The normal high is 65°F and the normal low 45°F, for a daily mean of 55.1°F. October is 11.9°F cooler than September and 12.8°F warmer than November. October is the 6th warmest month of the year in Quincy and the 7th wettest. Across the month the normal high falls 14°F, from 72°F on October 1 to 58°F on October 31. From one year to the next October's mean temperature typically moves about 2.5°F either way (NOAA's standard deviation), so roughly two Octobers in three average between 53°F and 58°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 28%).
| Day | High | Low | Chance of 0.01 in | Chance of 0.10 in |
|---|---|---|---|---|
| October 1 | 72°F | 50°F | 27% | 17% |
| October 8 | 69°F | 48°F | 27% | 18% |
| October 15 | 66°F | 45°F | 28% | 17% |
| October 22 | 63°F | 43°F | 28% | 17% |
| October 31 | 58°F | 39°F | 28% | 17% |
Every day of October: normal high, low and chance of precipitation (warmest afternoon October 1, coldest night October 31)
| Day | High | Low | Chance of 0.01 in | Chance of 0.10 in | Daylight |
|---|---|---|---|---|---|
| October 1 | 72°F | 50°F | 27% | 17% | 11 h 50 min |
| October 2 | 72°F | 50°F | 27% | 17% | 11 h 50 min |
| October 3 | 71°F | 50°F | 27% | 17% | 11 h 40 min |
| October 4 | 71°F | 49°F | 27% | 17% | 11 h 40 min |
| October 5 | 70°F | 49°F | 27% | 17% | 11 h 40 min |
| October 6 | 70°F | 48°F | 27% | 17% | 11 h 40 min |
| October 7 | 69°F | 48°F | 27% | 18% | 11 h 30 min |
| October 8 | 69°F | 48°F | 27% | 18% | 11 h 30 min |
| October 9 | 69°F | 47°F | 27% | 18% | 11 h 30 min |
| October 10 | 68°F | 47°F | 27% | 18% | 11 h 30 min |
| October 11 | 68°F | 47°F | 28% | 17% | 11 h 20 min |
| October 12 | 67°F | 46°F | 28% | 17% | 11 h 20 min |
| October 13 | 67°F | 46°F | 28% | 17% | 11 h 20 min |
| October 14 | 66°F | 46°F | 28% | 17% | 11 h 20 min |
| October 15 | 66°F | 45°F | 28% | 17% | 11 h 10 min |
| October 16 | 65°F | 45°F | 28% | 17% | 11 h 10 min |
| October 17 | 65°F | 45°F | 28% | 17% | 11 h 10 min |
| October 18 | 64°F | 44°F | 28% | 17% | 11 h 10 min |
| October 19 | 64°F | 44°F | 28% | 17% | 11 h |
| October 20 | 64°F | 43°F | 28% | 17% | 11 h |
| October 21 | 63°F | 43°F | 28% | 17% | 11 h |
| October 22 | 63°F | 43°F | 28% | 17% | 11 h |
| October 23 | 62°F | 42°F | 28% | 17% | 10 h 50 min |
| October 24 | 62°F | 42°F | 28% | 17% | 10 h 50 min |
| October 25 | 61°F | 42°F | 28% | 17% | 10 h 50 min |
| October 26 | 61°F | 41°F | 28% | 17% | 10 h 50 min |
| October 27 | 60°F | 41°F | 28% | 17% | 10 h 40 min |
| October 28 | 60°F | 40°F | 28% | 17% | 10 h 40 min |
| October 29 | 59°F | 40°F | 28% | 17% | 10 h 40 min |
| October 30 | 59°F | 40°F | 28% | 17% | 10 h 40 min |
| October 31 | 58°F | 39°F | 28% | 17% | 10 h 30 min |
- Normal high
- 65°FOctober average
- Normal low
- 45°FOctober average
- Precipitation
- 3.05 inmonth total
- Days with precipitation
- 90.01 inch or more
- Nights at 32°F or colder
- 3
- Daylight
- 11 h 50 min to 10 h 30 minOctober 1 to October 31
- Days at 70°F or more
- 12
- Days at 80°F or more
- 3
- Sunshine
- 75%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 October?
On a given October day the chance of 0.01 inch or more is 28% on average, highest around October 26 (28%). In all, 3.05 in falls on 9 days of a normal October, 1 of them with an inch or more.
In a normal October in Quincy, 3 nights fall to freezing.
Source: NOAA NCEI 1991-2020 daily and monthly normals, station USW00093989.
What are the records for October in Quincy?
The warmest October temperature on Quincy's official record (since 1901) is 96°F, on October 7, 1939; the coldest is 10°F, on October 30, 1925. The wettest October brought 10.84 in (1969); the snowiest, 3.6 inches (1925).
The October mean against the 1991-2020 normal of 55.1°F: 2021 59.5°F (+4.4), 2022 54.2°F (−0.9), 2023 57.2°F (+2.1), 2024 60.5°F (+5.4), 2025 61.0°F (+5.9). 4 of 5 ran warmer than normal.
| October | Mean | Against normal | Precip. |
|---|---|---|---|
| 2021 | 59.5°F | +4.4°F | 9.30 in |
| 2022 | 54.2°F | −0.9°F | 2.31 in |
| 2023 | 57.2°F | +2.1°F | 2.28 in |
| 2024 | 60.5°F | +5.4°F | 1.55 in |
| 2025 | 61.0°F | +5.9°F | 1.24 in |
Source: records: ACIS, NWS threaded record UINthr; recent months: ACIS, station USW00093989. Records and recent months use complete months only.
How does October in Quincy compare across Illinois?
Across the 144 places PlainClimate covers in Illinois, October normal highs run from 60°F in Barrington to 73°F in Anna; Quincy's is 65°F.
Source: NOAA NCEI 1991-2020 monthly normals for every station in the state.