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What is Foster Field, IL, Weather Like in October?
During the month of October, Foster Field, IL,
has an average daytime high temperature of 63°F and an average overnight low temperature dropping to 43°F.
Around 3.59 inches of precipitation is received during the month,
with about 34.54 inches falling in a typical year.
0.10 inches of snow is the mean amount received during October.
Annually, Foster Field receives around 25.80 inches of snow.
October 2025: Actual vs. Average Temperatures
Showing temperatures through today (October 20, 2025)
Actual High
Average High
Actual Low
Average Low
Month Summary
Average High: 70.6 F
(+5.2 vs avg)
Average Low: 57 F
(+12.2 vs avg)
This month was significantly warmer than average.
Actual data from: PWS_KILGLENC28
Foster Field, IL Daily Weather Averages for October
Recorded at Chicago Botanic Garden
(usc00111497),
7.5 miles
NW of
Foster Field, IL
| Day | Avg Temps (°F) | Precip (in) | Snow (in) | Degree Days (°F) | |||||
|---|---|---|---|---|---|---|---|---|---|
| Low | High | Mean | Month | Year | Month | Year | Heat | Cool | |
| 10/1 | 48 F | 69 F | 59 F | 0.12" | 31.07" | 0.00" | 25.70" | 7.3 F | 1 F |
| 10/2 | 48 F | 69 F | 58 F | 0.25" | 31.20" | 0.00" | 25.70" | 7.7 F | 0.9 F |
| 10/3 | 47 F | 68 F | 58 F | 0.37" | 31.32" | 0.00" | 25.70" | 8 F | 0.9 F |
| 10/4 | 47 F | 68 F | 57 F | 0.49" | 31.44" | 0.00" | 25.70" | 8.4 F | 0.8 F |
| 10/5 | 47 F | 68 F | 57 F | 0.61" | 31.56" | 0.00" | 25.70" | 8.7 F | 0.7 F |
| 10/6 | 46 F | 67 F | 57 F | 0.73" | 31.68" | 0.00" | 25.70" | 9.1 F | 0.7 F |
| 10/7 | 46 F | 67 F | 56 F | 0.84" | 31.79" | 0.00" | 25.70" | 9.5 F | 0.6 F |
| 10/8 | 45 F | 66 F | 56 F | 0.95" | 31.90" | 0.00" | 25.70" | 9.8 F | 0.6 F |
| 10/9 | 45 F | 66 F | 55 F | 1.07" | 32.02" | 0.00" | 25.70" | 10.2 F | 0.6 F |
| 10/10 | 45 F | 65 F | 55 F | 1.19" | 32.14" | 0.00" | 25.70" | 10.5 F | 0.5 F |
| 10/11 | 44 F | 65 F | 55 F | 1.31" | 32.26" | 0.00" | 25.70" | 10.9 F | 0.5 F |
| 10/12 | 44 F | 65 F | 54 F | 1.43" | 32.38" | 0.00" | 25.70" | 11.2 F | 0.4 F |
| 10/13 | 44 F | 64 F | 54 F | 1.55" | 32.50" | 0.00" | 25.70" | 11.6 F | 0.4 F |
| 10/14 | 43 F | 64 F | 53 F | 1.67" | 32.62" | 0.00" | 25.70" | 11.9 F | 0.3 F |
| 10/15 | 43 F | 63 F | 53 F | 1.78" | 32.73" | 0.00" | 25.70" | 12.2 F | 0.3 F |
| 10/16 | 43 F | 63 F | 53 F | 1.90" | 32.85" | 0.00" | 25.70" | 12.6 F | 0.2 F |
| 10/17 | 42 F | 62 F | 52 F | 2.02" | 32.97" | 0.00" | 25.70" | 12.9 F | 0.2 F |
| 10/18 | 42 F | 62 F | 52 F | 2.13" | 33.08" | 0.00" | 25.70" | 13.3 F | 0.2 F |
| 10/19 | 42 F | 62 F | 52 F | 2.25" | 33.20" | 0.00" | 25.70" | 13.6 F | 0.2 F |
| 10/20 | 41 F | 61 F | 51 F | 2.36" | 33.31" | 0.00" | 25.70" | 14 F | 0.2 F |
| 10/21 | 41 F | 61 F | 51 F | 2.48" | 33.43" | 0.00" | 25.70" | 14.3 F | 0.1 F |
| 10/22 | 41 F | 60 F | 50 F | 2.59" | 33.54" | 0.10" | 25.80" | 14.7 F | 0.1 F |
| 10/23 | 40 F | 60 F | 50 F | 2.70" | 33.65" | 0.10" | 25.80" | 15.1 F | 0.1 F |
| 10/24 | 40 F | 59 F | 50 F | 2.82" | 33.77" | 0.10" | 25.80" | 15.4 F | 0.1 F |
| 10/25 | 40 F | 59 F | 49 F | 2.93" | 33.88" | 0.10" | 25.80" | 15.8 F | 0.1 F |
| 10/26 | 39 F | 59 F | 49 F | 3.04" | 33.99" | 0.10" | 25.80" | 16.1 F | 0.1 F |
| 10/27 | 39 F | 58 F | 49 F | 3.16" | 34.11" | 0.10" | 25.80" | 16.5 F | 0.1 F |
| 10/28 | 39 F | 58 F | 48 F | 3.27" | 34.22" | 0.10" | 25.80" | 16.9 F | 0.1 F |
| 10/29 | 39 F | 57 F | 48 F | 3.39" | 34.34" | 0.10" | 25.80" | 17.2 F | 0.1 F |
| 10/30 | 38 F | 57 F | 48 F | 3.49" | 34.44" | 0.10" | 25.80" | 17.6 F | N/A |
| 10/31 | 38 F | 56 F | 47 F | 3.59" | 34.54" | 0.10" | 25.80" | 18 F | N/A |
