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What is Chester Public Library, IL, Weather Like in October?
During the month of October, Chester Public Library, IL,
has an average daytime high temperature of 70°F and an average overnight low temperature dropping to 46°F.
Around 3.07 inches of precipitation is received during the month,
with about 35.96 inches falling in a typical year.
As you might expect, snow is not common in the month of October.
Annually, Chester Public Library receives around 3.00 inches of snow.
October 2025: Actual vs. Average Temperatures
Showing temperatures through today (October 21, 2025)
Actual High
Average High
Actual Low
Average Low
Month Summary
Average High: 82.4 F
(+10.1 vs avg)
Average Low: 54.6 F
(+6.4 vs avg)
This month was significantly warmer than average.
Actual data from: PWS_ILRH16
Chester Public Library, IL Daily Weather Averages for October
Recorded at Kaskaskia Rvr Navigation Lock
(usc00114629),
8.5 miles
NW of
Chester Public Library, IL
| Day | Avg Temps (°F) | Precip (in) | Snow (in) | Degree Days (°F) | |||||
|---|---|---|---|---|---|---|---|---|---|
| Low | High | Mean | Month | Year | Month | Year | Heat | Cool | |
| 10/1 | 52 F | 76 F | 64 F | 0.09" | 32.98" | 0.00" | 3.00" | 3.9 F | 2.9 F |
| 10/2 | 51 F | 76 F | 64 F | 0.17" | 33.06" | 0.00" | 3.00" | 4.1 F | 2.7 F |
| 10/3 | 51 F | 75 F | 63 F | 0.25" | 33.14" | 0.00" | 3.00" | 4.3 F | 2.5 F |
| 10/4 | 51 F | 75 F | 63 F | 0.34" | 33.23" | 0.00" | 3.00" | 4.6 F | 2.4 F |
| 10/5 | 50 F | 75 F | 62 F | 0.42" | 33.31" | 0.00" | 3.00" | 4.8 F | 2.2 F |
| 10/6 | 50 F | 74 F | 62 F | 0.51" | 33.40" | 0.00" | 3.00" | 5.1 F | 2.1 F |
| 10/7 | 49 F | 74 F | 62 F | 0.59" | 33.48" | 0.00" | 3.00" | 5.4 F | 2 F |
| 10/8 | 49 F | 73 F | 61 F | 0.67" | 33.56" | 0.00" | 3.00" | 5.7 F | 1.9 F |
| 10/9 | 49 F | 73 F | 61 F | 0.75" | 33.64" | 0.00" | 3.00" | 6 F | 1.8 F |
| 10/10 | 48 F | 73 F | 60 F | 0.84" | 33.73" | 0.00" | 3.00" | 6.3 F | 1.7 F |
| 10/11 | 48 F | 72 F | 60 F | 0.92" | 33.81" | 0.00" | 3.00" | 6.6 F | 1.5 F |
| 10/12 | 48 F | 72 F | 60 F | 1.01" | 33.90" | 0.00" | 3.00" | 6.8 F | 1.4 F |
| 10/13 | 47 F | 71 F | 59 F | 1.10" | 33.99" | 0.00" | 3.00" | 7.1 F | 1.2 F |
| 10/14 | 47 F | 71 F | 59 F | 1.19" | 34.08" | 0.00" | 3.00" | 7.4 F | 1.1 F |
| 10/15 | 46 F | 70 F | 58 F | 1.29" | 34.18" | 0.00" | 3.00" | 7.6 F | 1 F |
| 10/16 | 46 F | 70 F | 58 F | 1.39" | 34.28" | 0.00" | 3.00" | 7.9 F | 0.9 F |
| 10/17 | 46 F | 69 F | 58 F | 1.49" | 34.38" | 0.00" | 3.00" | 8.3 F | 0.8 F |
| 10/18 | 45 F | 69 F | 57 F | 1.59" | 34.48" | 0.00" | 3.00" | 8.6 F | 0.8 F |
| 10/19 | 45 F | 69 F | 57 F | 1.71" | 34.60" | 0.00" | 3.00" | 9 F | 0.7 F |
| 10/20 | 45 F | 68 F | 56 F | 1.82" | 34.71" | 0.00" | 3.00" | 9.4 F | 0.7 F |
| 10/21 | 44 F | 68 F | 56 F | 1.93" | 34.82" | 0.00" | 3.00" | 9.7 F | 0.6 F |
| 10/22 | 44 F | 67 F | 56 F | 2.05" | 34.94" | 0.00" | 3.00" | 10.1 F | 0.6 F |
| 10/23 | 44 F | 67 F | 55 F | 2.16" | 35.05" | 0.00" | 3.00" | 10.5 F | 0.6 F |
| 10/24 | 43 F | 66 F | 55 F | 2.28" | 35.17" | 0.00" | 3.00" | 10.8 F | 0.6 F |
| 10/25 | 43 F | 66 F | 54 F | 2.39" | 35.28" | 0.00" | 3.00" | 11.2 F | 0.5 F |
| 10/26 | 43 F | 65 F | 54 F | 2.50" | 35.39" | 0.00" | 3.00" | 11.5 F | 0.5 F |
| 10/27 | 42 F | 65 F | 54 F | 2.61" | 35.50" | 0.00" | 3.00" | 11.9 F | 0.4 F |
| 10/28 | 42 F | 64 F | 53 F | 2.73" | 35.62" | 0.00" | 3.00" | 12.2 F | 0.4 F |
| 10/29 | 42 F | 64 F | 53 F | 2.84" | 35.73" | 0.00" | 3.00" | 12.6 F | 0.3 F |
| 10/30 | 41 F | 63 F | 52 F | 2.96" | 35.85" | 0.00" | 3.00" | 13 F | 0.3 F |
| 10/31 | 41 F | 63 F | 52 F | 3.07" | 35.96" | 0.00" | 3.00" | 13.3 F | 0.3 F |
