Normal weather in October: Normal, Illinois: normal highs, lows, rain and records for October
Normal in October has a normal high of 66°F and a normal low of 42°F, a daily mean of 54°F, falling from 73°F on the 1st to 58°F by the 31st. Measurable precipitation falls on 9 days in a normal October, 3.48 inches in all. (NOAA 1991-2020 normals)
In metric: a normal high of 19°C and low of 5°C, 88 mm of precipitation in October.
- NOAA stationNormal (4 mi NE)
- Station IDUSC00116200
- Location40.55°N 88.95°W
- Elevation790 ft (241 m)
- Population53,304
- Jan 33° 16°
- Feb 38° 19°
- Mar 50° 28°
- Apr 63° 38°
- May 74° 50°
- Jun 83° 60°
- Jul 86° 63°
- Aug 84° 61°
- Sep 79° 53°
- Oct 66° 42°
- Nov 50° 31°
- Dec 38° 21°
Each month: normal high (large) and low, °F. Fill: the month's normal mean, colder blue to hotter red.
How warm is Normal in October?
The normal high is 66°F and the normal low 42°F, for a daily mean of 53.7°F. October is 12.2°F cooler than September and 13.2°F warmer than November. October is the 6th warmest month of the year in Normal and the 6th wettest. Across the month the normal high falls 15°F, from 73°F on October 1 to 58°F on October 31. From one year to the next October's mean temperature typically moves about 2.4°F either way (NOAA's standard deviation), so roughly two Octobers in three average between 51°F and 56°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 30%).
| Day | High | Low | Chance of 0.01 in | Chance of 0.10 in |
|---|---|---|---|---|
| October 1 | 73°F | 47°F | 27% | 19% |
| October 8 | 70°F | 45°F | 29% | 19% |
| October 15 | 66°F | 42°F | 30% | 20% |
| October 22 | 63°F | 40°F | 30% | 20% |
| October 31 | 58°F | 37°F | 30% | 20% |
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 | 73°F | 47°F | 27% | 19% | 11 h 50 min |
| October 2 | 73°F | 47°F | 28% | 19% | 11 h 50 min |
| October 3 | 72°F | 46°F | 28% | 19% | 11 h 40 min |
| October 4 | 72°F | 46°F | 28% | 19% | 11 h 40 min |
| October 5 | 71°F | 46°F | 28% | 19% | 11 h 40 min |
| October 6 | 71°F | 45°F | 28% | 19% | 11 h 40 min |
| October 7 | 70°F | 45°F | 28% | 19% | 11 h 30 min |
| October 8 | 70°F | 45°F | 29% | 19% | 11 h 30 min |
| October 9 | 69°F | 44°F | 29% | 20% | 11 h 30 min |
| October 10 | 69°F | 44°F | 29% | 20% | 11 h 30 min |
| October 11 | 68°F | 44°F | 29% | 20% | 11 h 20 min |
| October 12 | 68°F | 43°F | 29% | 20% | 11 h 20 min |
| October 13 | 67°F | 43°F | 29% | 20% | 11 h 20 min |
| October 14 | 67°F | 43°F | 29% | 20% | 11 h 10 min |
| October 15 | 66°F | 42°F | 30% | 20% | 11 h 10 min |
| October 16 | 66°F | 42°F | 30% | 20% | 11 h 10 min |
| October 17 | 65°F | 42°F | 30% | 20% | 11 h 10 min |
| October 18 | 65°F | 41°F | 30% | 20% | 11 h |
| October 19 | 64°F | 41°F | 30% | 20% | 11 h |
| October 20 | 64°F | 40°F | 30% | 20% | 11 h |
| October 21 | 63°F | 40°F | 30% | 20% | 11 h |
| October 22 | 63°F | 40°F | 30% | 20% | 10 h 50 min |
| October 23 | 62°F | 39°F | 30% | 20% | 10 h 50 min |
| October 24 | 62°F | 39°F | 30% | 20% | 10 h 50 min |
| October 25 | 61°F | 39°F | 30% | 20% | 10 h 50 min |
| October 26 | 61°F | 38°F | 30% | 20% | 10 h 40 min |
| October 27 | 60°F | 38°F | 30% | 20% | 10 h 40 min |
| October 28 | 59°F | 38°F | 30% | 20% | 10 h 40 min |
| October 29 | 59°F | 37°F | 30% | 20% | 10 h 40 min |
| October 30 | 58°F | 37°F | 30% | 20% | 10 h 30 min |
| October 31 | 58°F | 37°F | 30% | 20% | 10 h 30 min |
- Normal high
- 66°FOctober average
- Normal low
- 42°FOctober average
- Precipitation
- 3.48 inmonth total
- Days with precipitation
- 90.01 inch or more
- Nights at 32°F or colder
- 5
- Daylight
- 11 h 50 min to 10 h 30 minOctober 1 to October 31
- Days at 70°F or more
- 11
- Days at 80°F or more
- 4
- Sunshine
- 72%of clear-sky sunlight (NASA)
Source: NOAA NCEI 1991-2020 daily normals, station USC00116200; monthly normals. Daylight is computed from the place's latitude with NOAA's solar equations.
Does it rain in Normal in October?
On a given October day the chance of 0.01 inch or more is 29% on average, highest around October 28 (30%). In all, 3.48 in falls on 9 days of a normal October, 1 of them with an inch or more.
In a normal October in Normal, 5 nights fall to freezing.
Source: NOAA NCEI 1991-2020 daily and monthly normals, station USC00116200.
What are the records for October in Normal?
The warmest October temperature on this station's record (since 1893) is 93°F, on October 2, 1897; the coldest is 9°F, on October 30, 1925. The wettest October brought 10.18 in (2009); the snowiest, 5.0 inches (1916).
The October mean against the 1991-2020 normal of 53.7°F: 2021 58.8°F (+5.1), 2022 51.5°F (−2.2), 2023 55.9°F (+2.2), 2024 58.0°F (+4.3), 2025 59.0°F (+5.3). 4 of 5 ran warmer than normal.
| October | Mean | Against normal | Precip. |
|---|---|---|---|
| 2021 | 58.8°F | +5.1°F | 7.93 in |
| 2022 | 51.5°F | −2.2°F | 3.01 in |
| 2023 | 55.9°F | +2.2°F | 4.51 in |
| 2024 | 58.0°F | +4.3°F | 0.69 in |
| 2025 | 59.0°F | +5.3°F | 1.78 in |
Source: records: ACIS, station USC00116200; recent months: ACIS, station USC00116200. Records and recent months use complete months only.
How does October in Normal 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; Normal's is 66°F.
Source: NOAA NCEI 1991-2020 monthly normals for every station in the state.