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What is Mercer, MO, Weather Like in October?
During the month of October, Mercer, MO,
has an average daytime high temperature of 66°F and an average overnight low temperature dropping to 42°F.
Around 3.29 inches of precipitation is received during the month,
with about 34.66 inches falling in a typical year.
Snow is not common in Mercer, MO.
October 2025: Actual vs. Average Temperatures
Showing temperatures through today (October 26, 2025)
Actual High
Average High
Actual Low
Average Low
Month Summary
Average High: 73.4 F
(+6.8 vs avg)
Average Low: 53.1 F
(+9.9 vs avg)
This month was significantly warmer than average.
Actual data from: MID_G2810
Mercer, MO Daily Weather Averages for October
Recorded at Princeton
(usc00236866),
8.3 miles
SSW of
Mercer, MO
| Day | Avg Temps (°F) | Precip (in) | Snow (in) | Degree Days (°F) | |||||
|---|---|---|---|---|---|---|---|---|---|
| Low | High | Mean | Month | Year | Month | Year | Heat | Cool | |
| 10/1 | 48 F | 72 F | 60 F | 0.14" | 31.51" | N/A | N/A | 6.7 F | 1.4 F |
| 10/2 | 47 F | 71 F | 59 F | 0.29" | 31.66" | N/A | N/A | 7 F | 1.2 F |
| 10/3 | 47 F | 71 F | 59 F | 0.43" | 31.80" | N/A | N/A | 7.3 F | 1.1 F |
| 10/4 | 47 F | 71 F | 59 F | 0.57" | 31.94" | N/A | N/A | 7.6 F | 1.1 F |
| 10/5 | 46 F | 70 F | 58 F | 0.71" | 32.08" | N/A | N/A | 7.9 F | 1 F |
| 10/6 | 46 F | 70 F | 58 F | 0.84" | 32.21" | N/A | N/A | 8.2 F | 0.9 F |
| 10/7 | 45 F | 69 F | 57 F | 0.96" | 32.33" | N/A | N/A | 8.6 F | 0.9 F |
| 10/8 | 45 F | 69 F | 57 F | 1.08" | 32.45" | N/A | N/A | 8.9 F | 0.8 F |
| 10/9 | 45 F | 68 F | 57 F | 1.21" | 32.58" | N/A | N/A | 9.3 F | 0.8 F |
| 10/10 | 44 F | 68 F | 56 F | 1.33" | 32.70" | N/A | N/A | 9.6 F | 0.7 F |
| 10/11 | 44 F | 68 F | 56 F | 1.44" | 32.81" | N/A | N/A | 9.9 F | 0.6 F |
| 10/12 | 44 F | 67 F | 55 F | 1.56" | 32.93" | N/A | N/A | 10.2 F | 0.5 F |
| 10/13 | 43 F | 67 F | 55 F | 1.67" | 33.04" | N/A | N/A | 10.6 F | 0.4 F |
| 10/14 | 43 F | 66 F | 55 F | 1.77" | 33.14" | N/A | N/A | 10.9 F | 0.4 F |
| 10/15 | 42 F | 66 F | 54 F | 1.88" | 33.25" | N/A | N/A | 11.3 F | 0.3 F |
| 10/16 | 42 F | 65 F | 54 F | 1.98" | 33.35" | N/A | N/A | 11.7 F | 0.3 F |
| 10/17 | 42 F | 65 F | 53 F | 2.09" | 33.46" | N/A | N/A | 12 F | 0.3 F |
| 10/18 | 41 F | 64 F | 53 F | 2.20" | 33.57" | N/A | N/A | 12.4 F | 0.2 F |
| 10/19 | 41 F | 64 F | 52 F | 2.31" | 33.68" | N/A | N/A | 12.8 F | 0.2 F |
| 10/20 | 40 F | 64 F | 52 F | 2.41" | 33.78" | N/A | N/A | 13.2 F | 0.2 F |
| 10/21 | 40 F | 63 F | 52 F | 2.50" | 33.87" | N/A | N/A | 13.7 F | 0.2 F |
| 10/22 | 40 F | 63 F | 51 F | 2.60" | 33.97" | N/A | N/A | 14.1 F | 0.2 F |
| 10/23 | 39 F | 62 F | 51 F | 2.68" | 34.05" | N/A | N/A | 14.5 F | 0.2 F |
| 10/24 | 39 F | 62 F | 50 F | 2.77" | 34.14" | N/A | N/A | 14.9 F | 0.1 F |
| 10/25 | 39 F | 61 F | 50 F | 2.85" | 34.22" | N/A | N/A | 15.3 F | 0.1 F |
| 10/26 | 38 F | 61 F | 49 F | 2.92" | 34.29" | N/A | N/A | 15.8 F | 0.1 F |
| 10/27 | 38 F | 60 F | 49 F | 3.00" | 34.37" | N/A | N/A | 16.2 F | 0.1 F |
| 10/28 | 37 F | 60 F | 49 F | 3.07" | 34.44" | N/A | N/A | 16.6 F | 0.1 F |
| 10/29 | 37 F | 59 F | 48 F | 3.15" | 34.52" | N/A | N/A | 17.1 F | 0.1 F |
| 10/30 | 37 F | 59 F | 48 F | 3.22" | 34.59" | N/A | N/A | 17.5 F | 0.1 F |
| 10/31 | 36 F | 58 F | 47 F | 3.29" | 34.66" | N/A | N/A | 17.9 F | 0.1 F |
