Your favorites:
What is Mount Vernon, SD, Weather Like in October?
During the month of October, Mount Vernon, SD,
has an average daytime high temperature of 61°F and an average overnight low temperature dropping to 40°F.
Around 2.11 inches of precipitation is received during the month,
with about 23.89 inches falling in a typical year.
0.60 inches of snow is the mean amount received during October.
Annually, Mount Vernon receives around 26.30 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: 70.9 F
(+6.9 vs avg)
Average Low: 48.6 F
(+6.6 vs avg)
This month was significantly warmer than average.
Actual data from: KMHE
Mount Vernon, SD Daily Weather Averages for October
Recorded at Mitchell
(usc00395669),
10.1 miles
ENE of
Mount Vernon, SD
| Day | Avg Temps (°F) | Precip (in) | Snow (in) | Degree Days (°F) | |||||
|---|---|---|---|---|---|---|---|---|---|
| Low | High | Mean | Month | Year | Month | Year | Heat | Cool | |
| 10/1 | 47 F | 69 F | 58 F | 0.09" | 21.87" | 0.00" | 25.70" | 7.8 F | 0.8 F |
| 10/2 | 46 F | 69 F | 57 F | 0.19" | 21.97" | 0.00" | 25.70" | 8.3 F | 0.7 F |
| 10/3 | 46 F | 68 F | 57 F | 0.28" | 22.06" | 0.00" | 25.70" | 8.8 F | 0.7 F |
| 10/4 | 45 F | 68 F | 56 F | 0.37" | 22.15" | 0.00" | 25.70" | 9.2 F | 0.6 F |
| 10/5 | 45 F | 67 F | 56 F | 0.45" | 22.23" | 0.00" | 25.70" | 9.7 F | 0.6 F |
| 10/6 | 44 F | 67 F | 55 F | 0.53" | 22.31" | 0.00" | 25.70" | 10.2 F | 0.5 F |
| 10/7 | 44 F | 66 F | 55 F | 0.61" | 22.39" | 0.00" | 25.70" | 10.7 F | 0.5 F |
| 10/8 | 43 F | 65 F | 54 F | 0.69" | 22.47" | 0.00" | 25.70" | 11.2 F | 0.4 F |
| 10/9 | 43 F | 65 F | 54 F | 0.77" | 22.55" | 0.10" | 25.80" | 11.7 F | 0.4 F |
| 10/10 | 42 F | 64 F | 53 F | 0.84" | 22.62" | 0.10" | 25.80" | 12.2 F | 0.4 F |
| 10/11 | 42 F | 64 F | 53 F | 0.91" | 22.69" | 0.10" | 25.80" | 12.7 F | 0.3 F |
| 10/12 | 41 F | 63 F | 52 F | 0.99" | 22.77" | 0.10" | 25.80" | 13.2 F | 0.3 F |
| 10/13 | 41 F | 63 F | 52 F | 1.06" | 22.84" | 0.10" | 25.80" | 13.7 F | 0.2 F |
| 10/14 | 40 F | 62 F | 51 F | 1.14" | 22.92" | 0.10" | 25.80" | 14.2 F | 0.2 F |
| 10/15 | 40 F | 61 F | 51 F | 1.21" | 22.99" | 0.10" | 25.80" | 14.6 F | 0.1 F |
| 10/16 | 39 F | 61 F | 50 F | 1.28" | 23.06" | 0.20" | 25.90" | 15.2 F | 0.1 F |
| 10/17 | 39 F | 60 F | 49 F | 1.35" | 23.13" | 0.20" | 25.90" | 15.7 F | 0.1 F |
| 10/18 | 38 F | 60 F | 49 F | 1.42" | 23.20" | 0.20" | 25.90" | 16.2 F | N/A |
| 10/19 | 38 F | 59 F | 48 F | 1.49" | 23.27" | 0.20" | 25.90" | 16.7 F | N/A |
| 10/20 | 37 F | 59 F | 48 F | 1.55" | 23.33" | 0.20" | 25.90" | 17.2 F | N/A |
| 10/21 | 37 F | 58 F | 47 F | 1.61" | 23.39" | 0.30" | 26.00" | 17.7 F | N/A |
| 10/22 | 36 F | 58 F | 47 F | 1.67" | 23.45" | 0.30" | 26.00" | 18.2 F | N/A |
| 10/23 | 36 F | 57 F | 46 F | 1.73" | 23.51" | 0.30" | 26.00" | 18.8 F | N/A |
| 10/24 | 35 F | 56 F | 46 F | 1.79" | 23.57" | 0.30" | 26.00" | 19.3 F | N/A |
| 10/25 | 35 F | 56 F | 45 F | 1.84" | 23.62" | 0.40" | 26.10" | 19.8 F | N/A |
| 10/26 | 34 F | 55 F | 45 F | 1.89" | 23.67" | 0.40" | 26.10" | 20.3 F | N/A |
| 10/27 | 34 F | 55 F | 44 F | 1.94" | 23.72" | 0.40" | 26.10" | 20.8 F | N/A |
| 10/28 | 33 F | 54 F | 44 F | 1.99" | 23.77" | 0.50" | 26.20" | 21.3 F | N/A |
| 10/29 | 33 F | 54 F | 43 F | 2.03" | 23.81" | 0.50" | 26.20" | 21.7 F | N/A |
| 10/30 | 32 F | 53 F | 43 F | 2.07" | 23.85" | 0.60" | 26.30" | 22.2 F | N/A |
| 10/31 | 32 F | 53 F | 42 F | 2.11" | 23.89" | 0.60" | 26.30" | 22.7 F | N/A |
