Warm-summer humid continental climate
Climate Custer - South Dakota
Annual high56ºF
Annual low32ºF
Precipitation19.65 inch
| Month | HighºF | LowºF | Precipinch | Snowinch |
|---|---|---|---|---|
| Jan | 37 | 15 | 0.33 | 6 |
| Feb | 38 | 17 | 0.67 | 10 |
| Mar | 45 | 22 | 1.03 | 12 |
| Apr | 53 | 29 | 2.04 | 11 |
| May | 62 | 39 | 3.58 | 1 |
| Jun | 72 | 47 | 2.83 | 0 |
| Jul | 80 | 54 | 2.75 | 0 |
| Aug | 79 | 53 | 2.33 | 0 |
| Sep | 70 | 43 | 1.67 | 0 |
| Oct | 57 | 32 | 1.47 | 4 |
| Nov | 44 | 23 | 0.58 | 6 |
| Dec | 36 | 15 | 0.37 | 6 |
- JanHigh 37ºFLow 15ºFPrecip 0.33 inch
- FebHigh 38ºFLow 17ºFPrecip 0.67 inch
- MarHigh 45ºFLow 22ºFPrecip 1.03 inch
- AprHigh 53ºFLow 29ºFPrecip 2.04 inch
- MayHigh 62ºFLow 39ºFPrecip 3.58 inch
- JunHigh 72ºFLow 47ºFPrecip 2.83 inch
- JulHigh 80ºFLow 54ºFPrecip 2.75 inch
- AugHigh 79ºFLow 53ºFPrecip 2.33 inch
- SepHigh 70ºFLow 43ºFPrecip 1.67 inch
- OctHigh 57ºFLow 32ºFPrecip 1.47 inch
- NovHigh 44ºFLow 23ºFPrecip 0.58 inch
- DecHigh 36ºFLow 15ºFPrecip 0.37 inch
Climate summary
What is the average weather in Custer, South Dakota?
Custer experiences a humid continental climate, marked by very large seasonal temperature contrasts. Summers are warm, while winters are cold and bring significant snowfall. The area is dry overall, with a strong seasonal pattern where summer is wetter, and winter is the driest season. Precipitation is spread relatively evenly through the year, with winter moisture often arriving as snow.
Custer weather averages
Annual high56ºF
Annual low32ºF
Precipitation19.65 inch
Snowfall56 inch
Daily normals Custer - South Dakota - January
| Day | HighºF | LowºF | Prec/ | Prec/ | Snow/ | Snow/ |
|---|---|---|---|---|---|---|
| Jan 1 | 36.5 | 16.2 | 0.01 | 0.01 | 0.20 | 0.20 |
| Jan 2 | 36.6 | 16.3 | 0.02 | 0.02 | 0.40 | 0.40 |
| Jan 3 | 36.7 | 16.3 | 0.03 | 0.03 | 0.60 | 0.60 |
| Jan 4 | 36.8 | 16.4 | 0.04 | 0.04 | 0.70 | 0.70 |
| Jan 5 | 36.9 | 16.4 | 0.05 | 0.05 | 0.90 | 0.90 |
| Jan 6 | 37.0 | 16.5 | 0.06 | 0.06 | 1.10 | 1.10 |
| Jan 7 | 37.1 | 16.5 | 0.07 | 0.07 | 1.30 | 1.30 |
| Jan 8 | 37.2 | 16.5 | 0.08 | 0.08 | 1.50 | 1.50 |
| Jan 9 | 37.3 | 16.5 | 0.09 | 0.09 | 1.70 | 1.70 |
| Jan 10 | 37.3 | 16.6 | 0.10 | 0.10 | 1.90 | 1.90 |
| Jan 11 | 37.4 | 16.6 | 0.11 | 0.11 | 2.10 | 2.10 |
| Jan 12 | 37.4 | 16.6 | 0.13 | 0.13 | 2.30 | 2.30 |
| Jan 13 | 37.5 | 16.6 | 0.14 | 0.14 | 2.50 | 2.50 |
| Jan 14 | 37.5 | 16.5 | 0.15 | 0.15 | 2.70 | 2.70 |
| Jan 15 | 37.5 | 16.5 | 0.16 | 0.16 | 2.90 | 2.90 |
| Jan 16 | 37.5 | 16.5 | 0.17 | 0.17 | 3.10 | 3.10 |
| Jan 17 | 37.5 | 16.4 | 0.18 | 0.18 | 3.30 | 3.30 |
| Jan 18 | 37.5 | 16.4 | 0.19 | 0.19 | 3.50 | 3.50 |
| Jan 19 | 37.4 | 16.3 | 0.20 | 0.20 | 3.70 | 3.70 |
| Jan 20 | 37.4 | 16.3 | 0.21 | 0.21 | 4.00 | 4.00 |
| Jan 21 | 37.3 | 16.2 | 0.22 | 0.22 | 4.20 | 4.20 |
| Jan 22 | 37.3 | 16.1 | 0.24 | 0.24 | 4.40 | 4.40 |
| Jan 23 | 37.2 | 16.0 | 0.25 | 0.25 | 4.60 | 4.60 |
| Jan 24 | 37.1 | 15.9 | 0.26 | 0.26 | 4.80 | 4.80 |
| Jan 25 | 37.0 | 15.9 | 0.27 | 0.27 | 5.10 | 5.10 |
| Jan 26 | 36.9 | 15.8 | 0.29 | 0.29 | 5.30 | 5.30 |
| Jan 27 | 36.8 | 15.7 | 0.30 | 0.30 | 5.60 | 5.60 |
| Jan 28 | 36.7 | 15.6 | 0.32 | 0.32 | 5.80 | 5.80 |
| Jan 29 | 36.6 | 15.5 | 0.33 | 0.33 | 6.10 | 6.10 |
| Jan 30 | 36.6 | 15.4 | 0.34 | 0.34 | 6.30 | 6.30 |
| Jan 31 | 36.5 | 15.3 | 0.36 | 0.36 | 6.60 | 6.60 |
Precipitation and snow add up through the month (/mo) and the year (/yr)
Weather history Custer - July 2026
| Day | HighºF | LowºF | Precip.inch |
|---|---|---|---|
| Jul 1 | 79.0 | 53.1 | 0.00 |
| Jul 2 | 81.0 | 57.0 | 0.00 |
| Jul 3 | 82.9 | 55.9 | 0.16 |
| Jul 4 | 77.0 | 53.1 | 0.08 |
| Jul 5 | 78.1 | 59.0 | 0.00 |
| Jul 6 | 87.1 | 63.0 | 0.00 |
| Jul 7 | 86.0 | 57.0 | 0.19 |
| Jul 8 | 88.0 | 53.1 | 0.08 |
| Jul 9 | 75.0 | 55.9 | 0.91 |
| Jul 10 | 78.1 | 52.0 | 0.00 |
| Jul 11 | 81.0 | 61.0 | 0.00 |
| Jul 12 | 89.1 | 64.9 | 0.00 |
| Jul 13 | 91.9 | 63.0 | 0.00 |
| Jul 14 | 89.1 | 63.0 | 0.00 |
| Jul 15 | 88.0 | 55.0 | 0.00 |
| Jul 16 | 78.1 | 55.0 | 0.18 |
| Jul 17 | 78.1 | 55.0 | 0.55 |
| Jul 18 | 73.0 | 54.0 | 0.00 |
| Jul 19 | 69.1 | 60.1 | 0.00 |
| Jul 20 | 78.1 | 55.9 | 0.00 |
| Jul 21 | 71.1 | 52.0 | 0.00 |
| Jul 22 | 73.0 | 57.0 | 0.53 |
| Jul 23 | 73.9 | 59.0 | 0.00 |
| Jul 24 | 73.9 | 57.9 | 0.00 |
| Jul 25 | 84.0 | 64.9 | 0.00 |
| Jul 26 | 93.9 | 57.9 | 0.28 |
| Jul 27 | 91.0 | 61.0 | 0.00 |
| Jul 28 | 84.0 | 61.0 | 0.04 |
| Jul 29 | 82.0 | 61.0 | 0.23 |
| Jul 30 | 82.9 | 57.0 | 0.04 |
| Jul 31 | 75.0 | 53.1 | 0.67 |
The data for July 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 temperature93.9ºF · Jul 26
- Lowest max temperature69.1ºF · Jul 19
- Highest min temperature64.9ºF · Jul 12
- Lowest min temperature52.0ºF · Jul 10
Geo Custer - South Dakota
Location
- Country
- United States
- State
- South Dakota
- County
- Custer
- City
- Custer
- Zip Code
- 57730
- Elevation
- 5561 ft
- Longitude
- -103.62
- Latitude
- 43.73
- ICAO
- –
- IATA
- –