Hot-summer humid continental climate
Climate Spearfish - South Dakota
Annual high61ºF
Annual low39ºF
Precipitation21.88 inch
| Month | HighºF | LowºF | Precipinch |
|---|---|---|---|
| Jan | 40 | 19 | 0.51 |
| Feb | 41 | 20 | 0.71 |
| Mar | 49 | 27 | 1.18 |
| Apr | 59 | 36 | 2.47 |
| May | 69 | 47 | 3.88 |
| Jun | 78 | 55 | 3.65 |
| Jul | 87 | 62 | 2.21 |
| Aug | 87 | 60 | 1.64 |
| Sep | 76 | 50 | 1.78 |
| Oct | 61 | 39 | 2.05 |
| Nov | 49 | 28 | 1.19 |
| Dec | 40 | 19 | 0.61 |
- JanHigh 40ºFLow 19ºFPrecip 0.51 inch
- FebHigh 41ºFLow 20ºFPrecip 0.71 inch
- MarHigh 49ºFLow 27ºFPrecip 1.18 inch
- AprHigh 59ºFLow 36ºFPrecip 2.47 inch
- MayHigh 69ºFLow 47ºFPrecip 3.88 inch
- JunHigh 78ºFLow 55ºFPrecip 3.65 inch
- JulHigh 87ºFLow 62ºFPrecip 2.21 inch
- AugHigh 87ºFLow 60ºFPrecip 1.64 inch
- SepHigh 76ºFLow 50ºFPrecip 1.78 inch
- OctHigh 61ºFLow 39ºFPrecip 2.05 inch
- NovHigh 49ºFLow 28ºFPrecip 1.19 inch
- DecHigh 40ºFLow 19ºFPrecip 0.61 inch
Climate summary
What is the average weather in Spearfish, South Dakota?
Spearfish experiences a humid continental climate, marked by very large seasonal temperature contrasts due to its inland location. Summers are warm, while winters are cold. The area receives moderate precipitation annually, with a strong seasonal pattern that makes spring the wettest period and winter the driest.
Spearfish weather averages
Annual high61ºF
Annual low39ºF
Precipitation21.88 inch
Daily normals Spearfish - South Dakota - January
| Day | HighºF | LowºF | Prec/ | Prec/ | Snow/ | Snow/ |
|---|---|---|---|---|---|---|
| Jan 1 | 35.8 | 15.8 | 0.02 | 0.02 | 0.30 | 0.30 |
| Jan 2 | 35.8 | 15.8 | 0.04 | 0.04 | 0.60 | 0.60 |
| Jan 3 | 35.8 | 15.8 | 0.06 | 0.06 | 0.90 | 0.90 |
| Jan 4 | 35.8 | 15.8 | 0.08 | 0.08 | 1.30 | 1.30 |
| Jan 5 | 35.9 | 15.8 | 0.10 | 0.10 | 1.60 | 1.60 |
| Jan 6 | 35.9 | 15.8 | 0.12 | 0.12 | 1.90 | 1.90 |
| Jan 7 | 35.9 | 15.8 | 0.14 | 0.14 | 2.30 | 2.30 |
| Jan 8 | 35.9 | 15.8 | 0.16 | 0.16 | 2.60 | 2.60 |
| Jan 9 | 36.0 | 15.8 | 0.18 | 0.18 | 2.90 | 2.90 |
| Jan 10 | 36.0 | 15.8 | 0.20 | 0.20 | 3.20 | 3.20 |
| Jan 11 | 36.0 | 15.8 | 0.21 | 0.21 | 3.40 | 3.40 |
| Jan 12 | 36.0 | 15.8 | 0.23 | 0.23 | 3.70 | 3.70 |
| Jan 13 | 36.0 | 15.8 | 0.25 | 0.25 | 3.90 | 3.90 |
| Jan 14 | 36.0 | 15.8 | 0.26 | 0.26 | 4.20 | 4.20 |
| Jan 15 | 36.0 | 15.8 | 0.28 | 0.28 | 4.40 | 4.40 |
| Jan 16 | 36.0 | 15.8 | 0.29 | 0.29 | 4.60 | 4.60 |
| Jan 17 | 36.0 | 15.8 | 0.31 | 0.31 | 4.80 | 4.80 |
| Jan 18 | 36.0 | 15.8 | 0.33 | 0.33 | 5.00 | 5.00 |
| Jan 19 | 36.0 | 15.7 | 0.34 | 0.34 | 5.20 | 5.20 |
| Jan 20 | 36.0 | 15.7 | 0.36 | 0.36 | 5.40 | 5.40 |
| Jan 21 | 36.0 | 15.7 | 0.38 | 0.38 | 5.60 | 5.60 |
| Jan 22 | 35.9 | 15.6 | 0.40 | 0.40 | 5.80 | 5.80 |
| Jan 23 | 35.9 | 15.6 | 0.42 | 0.42 | 6.10 | 6.10 |
| Jan 24 | 35.9 | 15.6 | 0.44 | 0.44 | 6.30 | 6.30 |
| Jan 25 | 35.8 | 15.5 | 0.46 | 0.46 | 6.60 | 6.60 |
| Jan 26 | 35.8 | 15.5 | 0.48 | 0.48 | 6.90 | 6.90 |
| Jan 27 | 35.8 | 15.4 | 0.51 | 0.51 | 7.10 | 7.10 |
| Jan 28 | 35.8 | 15.4 | 0.53 | 0.53 | 7.40 | 7.40 |
| Jan 29 | 35.7 | 15.4 | 0.55 | 0.55 | 7.70 | 7.70 |
| Jan 30 | 35.7 | 15.3 | 0.58 | 0.58 | 7.90 | 7.90 |
| Jan 31 | 35.7 | 15.3 | 0.60 | 0.60 | 8.20 | 8.20 |
Precipitation and snow add up through the month (/mo) and the year (/yr)
Weather history Spearfish - October 2026
| Day | HighºF | LowºF | Precip.inch |
|---|---|---|---|
| Oct 1 | 73.9 | 48.0 | 0.00 |
| Oct 2 | – | – | – |
| Oct 3 | – | – | – |
| Oct 4 | – | – | – |
| Oct 5 | – | – | – |
| Oct 6 | – | – | – |
| Oct 7 | 80.1 | 48.0 | 0.00 |
| Oct 8 | 79.0 | 55.0 | 0.00 |
| Oct 9 | 81.0 | 46.9 | 0.00 |
| Oct 10 | – | – | – |
| Oct 11 | 82.9 | 61.0 | – |
| Oct 12 | 82.0 | 42.1 | – |
| Oct 13 | 50.0 | 37.0 | – |
| Oct 14 | 45.0 | 37.0 | 0.20 |
| Oct 15 | 51.1 | 41.0 | 0.60 |
| Oct 16 | 48.0 | 28.0 | 0.00 |
| Oct 17 | 55.0 | 28.0 | 0.00 |
| Oct 18 | 61.0 | 28.0 | 0.00 |
| Oct 19 | 48.0 | 33.1 | 0.00 |
| Oct 20 | 68.0 | 45.0 | 0.00 |
| Oct 21 | – | – | – |
| Oct 22 | – | – | – |
| Oct 23 | 81.0 | 48.9 | 0.00 |
| Oct 24 | 64.9 | 33.1 | – |
| Oct 25 | 41.0 | 33.1 | 0.00 |
| Oct 26 | 73.0 | 33.1 | 0.03 |
| Oct 27 | 42.1 | 25.0 | 0.02 |
| Oct 28 | 61.0 | – | 0.00 |
| Oct 29 | 55.9 | 30.0 | 0.00 |
| Oct 30 | 55.0 | 30.0 | 0.00 |
| Oct 31 | – | – | – |
The data for October 2026 is incomplete: some days or values are missing.
- –No data
- –Not yet observed or received
- TTrace, too small to measure
Observed extremes
- Highest max temperature82.9ºF · Oct 11
- Lowest max temperature41.0ºF · Oct 25
- Highest min temperature61.0ºF · Oct 11
- Lowest min temperature25.0ºF · Oct 27
Geo Spearfish - South Dakota
Location
- Country
- United States
- State
- South Dakota
- County
- Lawrence
- City
- Spearfish
- Zip Code
- 57783
- Elevation
- 3898 ft
- Longitude
- -103.79
- Latitude
- 44.48
- ICAO
- –
- IATA
- –