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What is Lacy, SD, Weather Like in October?
During the month of October, Lacy, SD,
has an average daytime high temperature of 63°F and an average overnight low temperature dropping to 36°F.
Around 1.64 inches of precipitation is received during the month,
with about 18.19 inches falling in a typical year.
Snow is not common in Lacy, SD.
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: 68.5 F
(+4.5 vs avg)
Average Low: 47.2 F
(+9.9 vs avg)
This month was significantly warmer than average.
Actual data from: MID_G0232
Lacy, SD Daily Weather Averages for October
Recorded at Oahe Dam
(usc00396170),
14.5 miles
ESE of
Lacy, SD
| Day | Avg Temps (°F) | Precip (in) | Snow (in) | Degree Days (°F) | |||||
|---|---|---|---|---|---|---|---|---|---|
| Low | High | Mean | Month | Year | Month | Year | Heat | Cool | |
| 10/1 | 42 F | 70 F | 56 F | 0.04" | 16.59" | N/A | N/A | 9.2 F | 0.5 F |
| 10/2 | 42 F | 70 F | 56 F | 0.08" | 16.63" | N/A | N/A | 9.6 F | 0.5 F |
| 10/3 | 41 F | 69 F | 55 F | 0.13" | 16.68" | N/A | N/A | 10.1 F | 0.4 F |
| 10/4 | 41 F | 69 F | 55 F | 0.17" | 16.72" | N/A | N/A | 10.5 F | 0.4 F |
| 10/5 | 41 F | 68 F | 54 F | 0.22" | 16.77" | N/A | N/A | 11 F | 0.4 F |
| 10/6 | 40 F | 68 F | 54 F | 0.27" | 16.82" | N/A | N/A | 11.5 F | 0.4 F |
| 10/7 | 40 F | 67 F | 53 F | 0.33" | 16.88" | N/A | N/A | 12 F | 0.4 F |
| 10/8 | 39 F | 67 F | 53 F | 0.38" | 16.93" | N/A | N/A | 12.4 F | 0.3 F |
| 10/9 | 39 F | 66 F | 52 F | 0.44" | 16.99" | N/A | N/A | 12.9 F | 0.3 F |
| 10/10 | 38 F | 66 F | 52 F | 0.49" | 17.04" | N/A | N/A | 13.4 F | 0.3 F |
| 10/11 | 38 F | 65 F | 52 F | 0.54" | 17.09" | N/A | N/A | 13.8 F | 0.3 F |
| 10/12 | 38 F | 64 F | 51 F | 0.60" | 17.15" | N/A | N/A | 14.2 F | 0.2 F |
| 10/13 | 37 F | 64 F | 51 F | 0.65" | 17.20" | N/A | N/A | 14.6 F | 0.2 F |
| 10/14 | 37 F | 63 F | 50 F | 0.71" | 17.26" | N/A | N/A | 15 F | 0.1 F |
| 10/15 | 36 F | 63 F | 50 F | 0.76" | 17.31" | N/A | N/A | 15.5 F | 0.1 F |
| 10/16 | 36 F | 62 F | 49 F | 0.81" | 17.36" | N/A | N/A | 15.9 F | 0.1 F |
| 10/17 | 36 F | 62 F | 49 F | 0.86" | 17.41" | N/A | N/A | 16.4 F | N/A |
| 10/18 | 35 F | 61 F | 48 F | 0.93" | 17.48" | N/A | N/A | 16.8 F | N/A |
| 10/19 | 35 F | 61 F | 48 F | 0.99" | 17.54" | N/A | N/A | 17.3 F | N/A |
| 10/20 | 35 F | 60 F | 47 F | 1.06" | 17.61" | N/A | N/A | 17.7 F | N/A |
| 10/21 | 34 F | 60 F | 47 F | 1.13" | 17.68" | N/A | N/A | 18.1 F | N/A |
| 10/22 | 34 F | 59 F | 47 F | 1.19" | 17.74" | N/A | N/A | 18.6 F | N/A |
| 10/23 | 33 F | 59 F | 46 F | 1.26" | 17.81" | N/A | N/A | 19 F | N/A |
| 10/24 | 33 F | 58 F | 46 F | 1.33" | 17.88" | N/A | N/A | 19.5 F | N/A |
| 10/25 | 33 F | 58 F | 45 F | 1.38" | 17.93" | N/A | N/A | 19.9 F | N/A |
| 10/26 | 32 F | 57 F | 45 F | 1.42" | 17.97" | N/A | N/A | 20.3 F | N/A |
| 10/27 | 32 F | 57 F | 44 F | 1.47" | 18.02" | N/A | N/A | 20.8 F | N/A |
| 10/28 | 31 F | 56 F | 44 F | 1.51" | 18.06" | N/A | N/A | 21.2 F | N/A |
| 10/29 | 31 F | 56 F | 43 F | 1.55" | 18.10" | N/A | N/A | 21.6 F | N/A |
| 10/30 | 31 F | 55 F | 43 F | 1.60" | 18.15" | N/A | N/A | 22.1 F | N/A |
| 10/31 | 30 F | 55 F | 43 F | 1.64" | 18.19" | N/A | N/A | 22.5 F | N/A |
