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What is Loon Lake, IL, Weather Like in October?
During the month of October, Loon Lake, IL,
has an average daytime high temperature of 72°F and an average overnight low temperature dropping to 47°F.
Around 4.08 inches of precipitation is received during the month,
with about 41.09 inches falling in a typical year.
As you might expect, snow is not common in the month of October.
Annually, Loon Lake receives around 2.60 inches of snow.
October 2025: Actual vs. Average Temperatures
Showing temperatures through today (October 19, 2025)
Actual High
Average High
Actual Low
Average Low
Actual data from: MID_G6532
Loon Lake, IL Daily Weather Averages for October
Recorded at Brookport Dam 52
(usc00110993),
4.3 miles
WNW of
Loon Lake, IL
| Day | Avg Temps ( F) | Precip (in) | Snow (in) | Degree Days ( F) | |||||
|---|---|---|---|---|---|---|---|---|---|
| Low | High | Mean | Month | Year | Month | Year | Heat | Cool | |
| 10/1 | 53 F | 77 F | 65 F | 0.13" | 37.14" | 0.00" | 2.60" | 3.2 F | 3 F |
| 10/2 | 52 F | 77 F | 64 F | 0.26" | 37.27" | 0.00" | 2.60" | 3.4 F | 2.8 F |
| 10/3 | 52 F | 76 F | 64 F | 0.39" | 37.40" | 0.00" | 2.60" | 3.6 F | 2.6 F |
| 10/4 | 51 F | 76 F | 64 F | 0.53" | 37.54" | 0.00" | 2.60" | 3.8 F | 2.4 F |
| 10/5 | 51 F | 76 F | 63 F | 0.67" | 37.68" | 0.00" | 2.60" | 4 F | 2.3 F |
| 10/6 | 51 F | 75 F | 63 F | 0.81" | 37.82" | 0.00" | 2.60" | 4.3 F | 2.1 F |
| 10/7 | 50 F | 75 F | 63 F | 0.94" | 37.95" | 0.00" | 2.60" | 4.5 F | 2 F |
| 10/8 | 50 F | 74 F | 62 F | 1.07" | 38.08" | 0.00" | 2.60" | 4.8 F | 1.9 F |
| 10/9 | 50 F | 74 F | 62 F | 1.19" | 38.20" | 0.00" | 2.60" | 5.1 F | 1.8 F |
| 10/10 | 49 F | 74 F | 61 F | 1.32" | 38.33" | 0.00" | 2.60" | 5.4 F | 1.7 F |
| 10/11 | 49 F | 73 F | 61 F | 1.44" | 38.45" | 0.00" | 2.60" | 5.7 F | 1.6 F |
| 10/12 | 48 F | 73 F | 61 F | 1.55" | 38.56" | 0.00" | 2.60" | 5.9 F | 1.4 F |
| 10/13 | 48 F | 72 F | 60 F | 1.67" | 38.68" | 0.00" | 2.60" | 6.2 F | 1.3 F |
| 10/14 | 48 F | 72 F | 60 F | 1.80" | 38.81" | 0.00" | 2.60" | 6.5 F | 1.2 F |
| 10/15 | 47 F | 72 F | 59 F | 1.94" | 38.95" | 0.00" | 2.60" | 6.7 F | 1 F |
| 10/16 | 47 F | 71 F | 59 F | 2.07" | 39.08" | 0.00" | 2.60" | 7 F | 0.9 F |
| 10/17 | 46 F | 71 F | 59 F | 2.21" | 39.22" | 0.00" | 2.60" | 7.3 F | 0.8 F |
| 10/18 | 46 F | 70 F | 58 F | 2.34" | 39.35" | 0.00" | 2.60" | 7.7 F | 0.8 F |
| 10/19 | 46 F | 70 F | 58 F | 2.48" | 39.49" | 0.00" | 2.60" | 8 F | 0.7 F |
| 10/20 | 45 F | 69 F | 57 F | 2.63" | 39.64" | 0.00" | 2.60" | 8.4 F | 0.7 F |
| 10/21 | 45 F | 69 F | 57 F | 2.77" | 39.78" | 0.00" | 2.60" | 8.8 F | 0.7 F |
| 10/22 | 45 F | 68 F | 57 F | 2.90" | 39.91" | 0.00" | 2.60" | 9.2 F | 0.7 F |
| 10/23 | 44 F | 68 F | 56 F | 3.04" | 40.05" | 0.00" | 2.60" | 9.6 F | 0.7 F |
| 10/24 | 44 F | 68 F | 56 F | 3.16" | 40.17" | 0.00" | 2.60" | 10 F | 0.6 F |
| 10/25 | 43 F | 67 F | 55 F | 3.30" | 40.31" | 0.00" | 2.60" | 10.4 F | 0.6 F |
| 10/26 | 43 F | 67 F | 55 F | 3.43" | 40.44" | 0.00" | 2.60" | 10.7 F | 0.5 F |
| 10/27 | 43 F | 66 F | 54 F | 3.56" | 40.57" | 0.00" | 2.60" | 11.1 F | 0.5 F |
| 10/28 | 42 F | 66 F | 54 F | 3.69" | 40.70" | 0.00" | 2.60" | 11.5 F | 0.4 F |
| 10/29 | 42 F | 65 F | 54 F | 3.82" | 40.83" | 0.00" | 2.60" | 11.9 F | 0.4 F |
| 10/30 | 42 F | 65 F | 53 F | 3.96" | 40.97" | 0.00" | 2.60" | 12.3 F | 0.4 F |
| 10/31 | 41 F | 64 F | 53 F | 4.08" | 41.09" | 0.00" | 2.60" | 12.7 F | 0.4 F |
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