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What is Marseilles, IL, Weather Like in October?
During the month of October, Marseilles, IL,
has an average daytime high temperature of 65°F and an average overnight low temperature dropping to 42°F.
Around 3.20 inches of precipitation is received during the month,
with about 34.20 inches falling in a typical year.
As you might expect, snow is not common in the month of October.
Annually, Marseilles receives around 18.90 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: 74.2 F
(+7.2 vs avg)
Average Low: 54.7 F
(+11.3 vs avg)
This month was significantly warmer than average.
Actual data from: MID_MMPI2
Marseilles, IL Daily Weather Averages for October
Recorded at Marseilles Lock
(usc00115372),
2.3 miles
W of
Marseilles, IL
| Day | Avg Temps (°F) | Precip (in) | Snow (in) | Degree Days (°F) | |||||
|---|---|---|---|---|---|---|---|---|---|
| Low | High | Mean | Month | Year | Month | Year | Heat | Cool | |
| 10/1 | 47 F | 71 F | 59 F | 0.10" | 31.10" | 0.00" | 18.90" | 7.2 F | 1.4 F |
| 10/2 | 47 F | 71 F | 59 F | 0.20" | 31.20" | 0.00" | 18.90" | 7.5 F | 1.3 F |
| 10/3 | 46 F | 71 F | 58 F | 0.31" | 31.31" | 0.00" | 18.90" | 7.8 F | 1.2 F |
| 10/4 | 46 F | 70 F | 58 F | 0.41" | 31.41" | 0.00" | 18.90" | 8.2 F | 1.1 F |
| 10/5 | 45 F | 70 F | 58 F | 0.51" | 31.51" | 0.00" | 18.90" | 8.5 F | 1 F |
| 10/6 | 45 F | 69 F | 57 F | 0.61" | 31.61" | 0.00" | 18.90" | 8.9 F | 1 F |
| 10/7 | 45 F | 69 F | 57 F | 0.71" | 31.71" | 0.00" | 18.90" | 9.3 F | 0.9 F |
| 10/8 | 44 F | 68 F | 56 F | 0.80" | 31.80" | 0.00" | 18.90" | 9.7 F | 0.9 F |
| 10/9 | 44 F | 68 F | 56 F | 0.90" | 31.90" | 0.00" | 18.90" | 10.1 F | 0.8 F |
| 10/10 | 44 F | 67 F | 55 F | 1.00" | 32.00" | 0.00" | 18.90" | 10.4 F | 0.7 F |
| 10/11 | 43 F | 67 F | 55 F | 1.11" | 32.11" | 0.00" | 18.90" | 10.8 F | 0.6 F |
| 10/12 | 43 F | 66 F | 54 F | 1.21" | 32.21" | 0.00" | 18.90" | 11.1 F | 0.6 F |
| 10/13 | 42 F | 66 F | 54 F | 1.31" | 32.31" | 0.00" | 18.90" | 11.5 F | 0.5 F |
| 10/14 | 42 F | 65 F | 54 F | 1.40" | 32.40" | 0.00" | 18.90" | 11.9 F | 0.4 F |
| 10/15 | 42 F | 65 F | 53 F | 1.50" | 32.50" | 0.00" | 18.90" | 12.2 F | 0.3 F |
| 10/16 | 41 F | 64 F | 53 F | 1.60" | 32.60" | 0.00" | 18.90" | 12.6 F | 0.3 F |
| 10/17 | 41 F | 64 F | 52 F | 1.70" | 32.70" | 0.00" | 18.90" | 13 F | 0.2 F |
| 10/18 | 40 F | 63 F | 52 F | 1.81" | 32.81" | 0.00" | 18.90" | 13.4 F | 0.2 F |
| 10/19 | 40 F | 63 F | 51 F | 1.92" | 32.92" | 0.00" | 18.90" | 13.9 F | 0.2 F |
| 10/20 | 40 F | 62 F | 51 F | 2.02" | 33.02" | 0.00" | 18.90" | 14.3 F | 0.2 F |
| 10/21 | 39 F | 62 F | 50 F | 2.12" | 33.12" | 0.00" | 18.90" | 14.7 F | 0.2 F |
| 10/22 | 39 F | 61 F | 50 F | 2.23" | 33.23" | 0.00" | 18.90" | 15.2 F | 0.2 F |
| 10/23 | 39 F | 61 F | 50 F | 2.33" | 33.33" | 0.00" | 18.90" | 15.6 F | 0.2 F |
| 10/24 | 38 F | 60 F | 49 F | 2.44" | 33.44" | 0.00" | 18.90" | 16 F | 0.2 F |
| 10/25 | 38 F | 60 F | 49 F | 2.55" | 33.55" | 0.00" | 18.90" | 16.5 F | 0.1 F |
| 10/26 | 37 F | 59 F | 48 F | 2.66" | 33.66" | 0.00" | 18.90" | 16.9 F | 0.1 F |
| 10/27 | 37 F | 59 F | 48 F | 2.77" | 33.77" | 0.00" | 18.90" | 17.3 F | 0.1 F |
| 10/28 | 37 F | 58 F | 47 F | 2.89" | 33.89" | 0.00" | 18.90" | 17.7 F | 0.1 F |
| 10/29 | 36 F | 58 F | 47 F | 2.99" | 33.99" | 0.00" | 18.90" | 18.1 F | 0.1 F |
| 10/30 | 36 F | 57 F | 47 F | 3.10" | 34.10" | 0.00" | 18.90" | 18.6 F | 0.1 F |
| 10/31 | 36 F | 57 F | 46 F | 3.20" | 34.20" | 0.00" | 18.90" | 19 F | 0.1 F |
