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What is Symerton, IL, Weather Like in October?
During the month of October, Symerton, IL,
has an average daytime high temperature of 64°F and an average overnight low temperature dropping to 44°F.
Around 3.14 inches of precipitation is received during the month,
with about 33.63 inches falling in a typical year.
As you might expect, snow is not common in the month of October.
Annually, Symerton receives around 13.40 inches of snow.
October 2025: Actual vs. Average Temperatures
Showing temperatures through today (October 27, 2025)
Actual High
Average High
Actual Low
Average Low
Month Summary
Average High: 69 F
(+4.5 vs avg)
Average Low: 52.3 F
(+8.0 vs avg)
This month was significantly warmer than average.
Actual data from: MID_JOLI2
Symerton, IL Daily Weather Averages for October
Recorded at Joliet Brandon Rd Dam
(usc00114530),
12.4 miles
NNW of
Symerton, IL
| Day | Avg Temps (°F) | Precip (in) | Snow (in) | Degree Days (°F) | |||||
|---|---|---|---|---|---|---|---|---|---|
| Low | High | Mean | Month | Year | Month | Year | Heat | Cool | |
| 10/1 | 49 F | 70 F | 60 F | 0.10" | 30.59" | 0.00" | 13.40" | 6.6 F | 1.3 F |
| 10/2 | 49 F | 70 F | 59 F | 0.21" | 30.70" | 0.00" | 13.40" | 6.9 F | 1.2 F |
| 10/3 | 48 F | 70 F | 59 F | 0.31" | 30.80" | 0.00" | 13.40" | 7.2 F | 1.1 F |
| 10/4 | 48 F | 69 F | 58 F | 0.42" | 30.91" | 0.00" | 13.40" | 7.6 F | 1 F |
| 10/5 | 47 F | 69 F | 58 F | 0.52" | 31.01" | 0.00" | 13.40" | 7.9 F | 0.9 F |
| 10/6 | 47 F | 68 F | 58 F | 0.62" | 31.11" | 0.00" | 13.40" | 8.3 F | 0.9 F |
| 10/7 | 47 F | 68 F | 57 F | 0.71" | 31.20" | 0.00" | 13.40" | 8.7 F | 0.8 F |
| 10/8 | 46 F | 67 F | 57 F | 0.81" | 31.30" | 0.00" | 13.40" | 9.1 F | 0.8 F |
| 10/9 | 46 F | 67 F | 56 F | 0.91" | 31.40" | 0.00" | 13.40" | 9.4 F | 0.7 F |
| 10/10 | 46 F | 66 F | 56 F | 1.01" | 31.50" | 0.00" | 13.40" | 9.8 F | 0.6 F |
| 10/11 | 45 F | 66 F | 55 F | 1.11" | 31.60" | 0.00" | 13.40" | 10.1 F | 0.6 F |
| 10/12 | 45 F | 65 F | 55 F | 1.21" | 31.70" | 0.00" | 13.40" | 10.5 F | 0.5 F |
| 10/13 | 44 F | 65 F | 55 F | 1.31" | 31.80" | 0.00" | 13.40" | 10.8 F | 0.4 F |
| 10/14 | 44 F | 64 F | 54 F | 1.42" | 31.91" | 0.00" | 13.40" | 11.2 F | 0.3 F |
| 10/15 | 44 F | 64 F | 54 F | 1.52" | 32.01" | 0.00" | 13.40" | 11.5 F | 0.3 F |
| 10/16 | 43 F | 63 F | 53 F | 1.62" | 32.11" | 0.00" | 13.40" | 11.9 F | 0.2 F |
| 10/17 | 43 F | 63 F | 53 F | 1.73" | 32.22" | 0.00" | 13.40" | 12.3 F | 0.2 F |
| 10/18 | 43 F | 62 F | 53 F | 1.84" | 32.33" | 0.00" | 13.40" | 12.7 F | 0.2 F |
| 10/19 | 42 F | 62 F | 52 F | 1.94" | 32.43" | 0.00" | 13.40" | 13.1 F | 0.2 F |
| 10/20 | 42 F | 61 F | 52 F | 2.04" | 32.53" | 0.00" | 13.40" | 13.5 F | 0.1 F |
| 10/21 | 42 F | 61 F | 51 F | 2.14" | 32.63" | 0.00" | 13.40" | 13.9 F | 0.1 F |
| 10/22 | 41 F | 60 F | 51 F | 2.24" | 32.73" | 0.00" | 13.40" | 14.3 F | 0.1 F |
| 10/23 | 41 F | 60 F | 50 F | 2.34" | 32.83" | 0.00" | 13.40" | 14.7 F | 0.1 F |
| 10/24 | 41 F | 59 F | 50 F | 2.44" | 32.93" | 0.00" | 13.40" | 15.1 F | 0.1 F |
| 10/25 | 40 F | 59 F | 50 F | 2.55" | 33.04" | 0.00" | 13.40" | 15.5 F | 0.1 F |
| 10/26 | 40 F | 58 F | 49 F | 2.65" | 33.14" | 0.00" | 13.40" | 15.9 F | 0.1 F |
| 10/27 | 40 F | 58 F | 49 F | 2.75" | 33.24" | 0.00" | 13.40" | 16.3 F | 0.1 F |
| 10/28 | 39 F | 58 F | 48 F | 2.85" | 33.34" | 0.00" | 13.40" | 16.8 F | 0.1 F |
| 10/29 | 39 F | 57 F | 48 F | 2.95" | 33.44" | 0.00" | 13.40" | 17.2 F | 0.1 F |
| 10/30 | 39 F | 57 F | 48 F | 3.05" | 33.54" | 0.00" | 13.40" | 17.6 F | 0.1 F |
| 10/31 | 38 F | 56 F | 47 F | 3.14" | 33.63" | 0.00" | 13.40" | 18 F | 0.1 F |
