Carbondale weather in October: Carbondale, Illinois: normal highs, lows, rain and records for October
Carbondale in October has a normal high of 70°F and a normal low of 45°F, a daily mean of 57°F, falling from 76°F on the 1st to 63°F by the 31st. Measurable precipitation falls on 10 days in a normal October, 3.54 inches in all. (NOAA 1991-2020 normals)
In metric: a normal high of 21°C and low of 7°C, 90 mm of precipitation in October.
- NOAA stationCarbondale Southern Illinois Airport
- Station IDUSW00093810
- Location37.78°N 89.25°W
- Elevation406 ft (124 m)
- From the center4 miles
- Population22,223
- Jan 42° 25°
- Feb 47° 28°
- Mar 57° 36°
- Apr 68° 45°
- May 77° 55°
- Jun 86° 64°
- Jul 88° 68°
- Aug 87° 65°
- Sep 81° 56°
- Oct 70° 45°
- Nov 56° 35°
- Dec 46° 28°
Each month: normal high (large) and low, °F. Fill: the month's normal mean, colder blue to hotter red.
How warm is Carbondale in October?
The normal high is 70°F and the normal low 45°F, for a daily mean of 57.4°F. October is 10.9°F cooler than September and 11.8°F warmer than November. October is the 6th warmest month of the year in Carbondale and the 7th wettest. Across the month the normal high falls 13°F, from 76°F on October 1 to 63°F on October 31. From one year to the next October's mean temperature typically moves about 2.2°F either way (NOAA's standard deviation), so roughly two Octobers in three average between 55°F and 60°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 33%).
| Day | High | Low | Chance of 0.01 in | Chance of 0.10 in |
|---|---|---|---|---|
| October 1 | 76°F | 50°F | 33% | 15% |
| October 8 | 74°F | 47°F | 32% | 16% |
| October 15 | 71°F | 45°F | 32% | 17% |
| October 22 | 68°F | 43°F | 31% | 17% |
| October 31 | 63°F | 40°F | 31% | 18% |
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 | 76°F | 50°F | 33% | 15% | 11 h 50 min |
| October 2 | 76°F | 50°F | 33% | 15% | 11 h 50 min |
| October 3 | 75°F | 49°F | 33% | 15% | 11 h 50 min |
| October 4 | 75°F | 49°F | 33% | 15% | 11 h 40 min |
| October 5 | 75°F | 48°F | 33% | 15% | 11 h 40 min |
| October 6 | 74°F | 48°F | 33% | 15% | 11 h 40 min |
| October 7 | 74°F | 48°F | 32% | 16% | 11 h 40 min |
| October 8 | 74°F | 47°F | 32% | 16% | 11 h 30 min |
| October 9 | 73°F | 47°F | 32% | 16% | 11 h 30 min |
| October 10 | 73°F | 47°F | 32% | 16% | 11 h 30 min |
| October 11 | 72°F | 46°F | 32% | 16% | 11 h 30 min |
| October 12 | 72°F | 46°F | 32% | 16% | 11 h 20 min |
| October 13 | 72°F | 46°F | 32% | 17% | 11 h 20 min |
| October 14 | 71°F | 45°F | 32% | 17% | 11 h 20 min |
| October 15 | 71°F | 45°F | 32% | 17% | 11 h 20 min |
| October 16 | 70°F | 45°F | 32% | 17% | 11 h 10 min |
| October 17 | 70°F | 44°F | 32% | 17% | 11 h 10 min |
| October 18 | 70°F | 44°F | 32% | 17% | 11 h 10 min |
| October 19 | 69°F | 44°F | 32% | 17% | 11 h 10 min |
| October 20 | 69°F | 43°F | 31% | 17% | 11 h 10 min |
| October 21 | 68°F | 43°F | 31% | 17% | 11 h |
| October 22 | 68°F | 43°F | 31% | 17% | 11 h |
| October 23 | 67°F | 42°F | 31% | 17% | 11 h |
| October 24 | 67°F | 42°F | 31% | 17% | 11 h |
| October 25 | 66°F | 42°F | 31% | 17% | 10 h 50 min |
| October 26 | 66°F | 41°F | 31% | 18% | 10 h 50 min |
| October 27 | 65°F | 41°F | 31% | 18% | 10 h 50 min |
| October 28 | 65°F | 41°F | 31% | 18% | 10 h 50 min |
| October 29 | 64°F | 40°F | 31% | 18% | 10 h 40 min |
| October 30 | 64°F | 40°F | 31% | 18% | 10 h 40 min |
| October 31 | 63°F | 40°F | 31% | 18% | 10 h 40 min |
- Normal high
- 70°FOctober average
- Normal low
- 45°FOctober average
- Precipitation
- 3.54 inmonth total
- Days with precipitation
- 100.01 inch or more
- Nights at 32°F or colder
- 3
- Daylight
- 11 h 50 min to 10 h 40 minOctober 1 to October 31
- Days at 70°F or more
- 17
- Days at 80°F or more
- 6
- Sunshine
- 76%of clear-sky sunlight (NASA)
Source: NOAA NCEI 1991-2020 daily normals, station USW00093810; monthly normals. Daylight is computed from the place's latitude with NOAA's solar equations.
Does it rain in Carbondale in October?
On a given October day the chance of 0.01 inch or more is 32% on average, highest around October 1 (33%). In all, 3.54 in falls on 10 days of a normal October, 1 of them with an inch or more.
In a normal October in Carbondale, 3 nights fall to freezing.
Source: NOAA NCEI 1991-2020 daily and monthly normals, station USW00093810.
What are the records for October in Carbondale?
The warmest October temperature on Carbondale's official record (since 1898) is 96°F, on October 3, 1922; the coldest is 16°F, on October 29, 1952. The wettest October brought 10.27 in (1910); the snowiest, 4.0 inches (1925).
The October mean against the 1991-2020 normal of 57.4°F: 2021 62.7°F (+5.3), 2022 55.7°F (−1.7), 2023 58.8°F (+1.4), 2024 60.7°F (+3.3), 2025 61.7°F (+4.3). 4 of 5 ran warmer than normal.
| October | Mean | Against normal | Precip. |
|---|---|---|---|
| 2021 | 62.7°F | +5.3°F | 5.85 in |
| 2022 | 55.7°F | −1.7°F | 1.02 in |
| 2023 | 58.8°F | +1.4°F | 3.24 in |
| 2024 | 60.7°F | +3.3°F | 0.75 in |
| 2025 | 61.7°F | +4.3°F | 3.91 in |
Source: records: ACIS, NWS threaded record MDHthr; recent months: ACIS, station USW00093810. Records and recent months use complete months only.
How does October in Carbondale 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; Carbondale's is 70°F.
Source: NOAA NCEI 1991-2020 monthly normals for every station in the state.