Cold steppe climate
Climate Interior - South Dakota
Annual high64ºF
Annual low38ºF
Precipitation18.5 inch
| Month | HighºF | LowºF | Precipinch | Snowinch |
|---|---|---|---|---|
| Jan | 38 | 16 | 0.42 | 4 |
| Feb | 42 | 18 | 0.54 | 6 |
| Mar | 51 | 27 | 1.23 | 6 |
| Apr | 63 | 36 | 1.93 | 4 |
| May | 73 | 47 | 3.24 | 0 |
| Jun | 82 | 56 | 3.09 | 0 |
| Jul | 91 | 63 | 2.30 | 0 |
| Aug | 91 | 62 | 1.67 | 0 |
| Sep | 81 | 51 | 1.48 | 0 |
| Oct | 66 | 39 | 1.48 | 1 |
| Nov | 49 | 26 | 0.71 | 2 |
| Dec | 38 | 16 | 0.41 | 5 |
- JanHigh 38ºFLow 16ºFPrecip 0.42 inch
- FebHigh 42ºFLow 18ºFPrecip 0.54 inch
- MarHigh 51ºFLow 27ºFPrecip 1.23 inch
- AprHigh 63ºFLow 36ºFPrecip 1.93 inch
- MayHigh 73ºFLow 47ºFPrecip 3.24 inch
- JunHigh 82ºFLow 56ºFPrecip 3.09 inch
- JulHigh 91ºFLow 63ºFPrecip 2.30 inch
- AugHigh 91ºFLow 62ºFPrecip 1.67 inch
- SepHigh 81ºFLow 51ºFPrecip 1.48 inch
- OctHigh 66ºFLow 39ºFPrecip 1.48 inch
- NovHigh 49ºFLow 26ºFPrecip 0.71 inch
- DecHigh 38ºFLow 16ºFPrecip 0.41 inch
Climate summary
What is the average weather in Interior, South Dakota?
Interior experiences a cold semi-arid climate, marked by very large seasonal temperature contrasts. Summers are hot, while winters are cold and bring regular snowfall. The area is generally dry, with low annual precipitation, though summer months tend to be wetter, with precipitation often arriving in brief showers.
Interior weather averages
Annual high64ºF
Annual low38ºF
Precipitation18.5 inch
Snowfall28 inch
Daily normals Interior - South Dakota - January
| Day | HighºF | LowºF | Prec/ | Prec/ | Snow/ | Snow/ |
|---|---|---|---|---|---|---|
| Jan 1 | 36.7 | 14.6 | 0.02 | 0.02 | 0.20 | 0.20 |
| Jan 2 | 36.7 | 14.5 | 0.03 | 0.03 | 0.40 | 0.40 |
| Jan 3 | 36.7 | 14.5 | 0.05 | 0.05 | 0.60 | 0.60 |
| Jan 4 | 36.7 | 14.4 | 0.07 | 0.07 | 0.80 | 0.80 |
| Jan 5 | 36.7 | 14.4 | 0.08 | 0.08 | 1.00 | 1.00 |
| Jan 6 | 36.7 | 14.4 | 0.10 | 0.10 | 1.20 | 1.20 |
| Jan 7 | 36.7 | 14.3 | 0.11 | 0.11 | 1.40 | 1.40 |
| Jan 8 | 36.8 | 14.3 | 0.13 | 0.13 | 1.60 | 1.60 |
| Jan 9 | 36.8 | 14.3 | 0.14 | 0.14 | 1.70 | 1.70 |
| Jan 10 | 36.8 | 14.3 | 0.16 | 0.16 | 1.90 | 1.90 |
| Jan 11 | 36.9 | 14.2 | 0.17 | 0.17 | 2.10 | 2.10 |
| Jan 12 | 36.9 | 14.2 | 0.19 | 0.19 | 2.30 | 2.30 |
| Jan 13 | 36.9 | 14.2 | 0.20 | 0.20 | 2.40 | 2.40 |
| Jan 14 | 37.0 | 14.2 | 0.22 | 0.22 | 2.60 | 2.60 |
| Jan 15 | 37.0 | 14.2 | 0.23 | 0.23 | 2.80 | 2.80 |
| Jan 16 | 37.0 | 14.1 | 0.25 | 0.25 | 2.90 | 2.90 |
| Jan 17 | 37.1 | 14.1 | 0.26 | 0.26 | 3.10 | 3.10 |
| Jan 18 | 37.1 | 14.1 | 0.27 | 0.27 | 3.30 | 3.30 |
| Jan 19 | 37.1 | 14.1 | 0.29 | 0.29 | 3.40 | 3.40 |
| Jan 20 | 37.2 | 14.1 | 0.30 | 0.30 | 3.60 | 3.60 |
| Jan 21 | 37.2 | 14.1 | 0.32 | 0.32 | 3.80 | 3.80 |
| Jan 22 | 37.3 | 14.1 | 0.33 | 0.33 | 3.90 | 3.90 |
| Jan 23 | 37.3 | 14.0 | 0.34 | 0.34 | 4.10 | 4.10 |
| Jan 24 | 37.4 | 14.0 | 0.36 | 0.36 | 4.30 | 4.30 |
| Jan 25 | 37.4 | 14.0 | 0.37 | 0.37 | 4.40 | 4.40 |
| Jan 26 | 37.5 | 14.0 | 0.39 | 0.39 | 4.60 | 4.60 |
| Jan 27 | 37.5 | 14.1 | 0.40 | 0.40 | 4.80 | 4.80 |
| Jan 28 | 37.6 | 14.1 | 0.41 | 0.41 | 5.00 | 5.00 |
| Jan 29 | 37.7 | 14.1 | 0.43 | 0.43 | 5.10 | 5.10 |
| Jan 30 | 37.8 | 14.1 | 0.44 | 0.44 | 5.30 | 5.30 |
| Jan 31 | 37.8 | 14.1 | 0.46 | 0.46 | 5.50 | 5.50 |
Precipitation and snow add up through the month (/mo) and the year (/yr)
Weather history Interior - September 2026
| Day | HighºF | LowºF | Precip.inch |
|---|---|---|---|
| Sep 1 | 89.1 | 60.1 | 0.27 |
| Sep 2 | 93.0 | 64.0 | 0.00 |
| Sep 3 | 100.0 | 71.1 | 0.00 |
| Sep 4 | 97.0 | 61.0 | 0.00 |
| Sep 5 | 100.0 | 66.9 | 0.00 |
| Sep 6 | 98.1 | 68.0 | 0.00 |
| Sep 7 | 93.9 | 69.1 | 0.08 |
| Sep 8 | 93.9 | 62.1 | 0.00 |
| Sep 9 | 87.1 | 54.0 | 0.00 |
| Sep 10 | 95.0 | 55.0 | 0.00 |
| Sep 11 | 93.9 | 64.0 | 0.00 |
| Sep 12 | 86.0 | 50.0 | 0.00 |
| Sep 13 | 71.1 | 50.0 | 0.00 |
| Sep 14 | 75.9 | 57.9 | 0.06 |
| Sep 15 | 75.0 | 48.9 | 0.00 |
| Sep 16 | 82.9 | 57.9 | 0.00 |
| Sep 17 | 82.0 | 52.0 | T |
| Sep 18 | 73.0 | 63.0 | 0.12 |
| Sep 19 | 73.0 | 60.1 | 0.00 |
| Sep 20 | 64.9 | 57.9 | 0.31 |
| Sep 21 | 62.1 | 55.0 | 0.18 |
| Sep 22 | 66.9 | 54.0 | 0.00 |
| Sep 23 | 84.0 | 60.1 | 0.00 |
| Sep 24 | 84.0 | 61.0 | 0.00 |
| Sep 25 | 79.0 | 51.1 | 0.00 |
| Sep 26 | 82.9 | 61.0 | 0.00 |
| Sep 27 | 82.0 | 57.0 | 0.00 |
| Sep 28 | 78.1 | 63.0 | 0.07 |
| Sep 29 | 81.0 | 52.0 | 0.00 |
| Sep 30 | 86.0 | 54.0 | 0.00 |
The data for September 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 temperature100.0ºF · Sep 3
- Lowest max temperature62.1ºF · Sep 21
- Highest min temperature71.1ºF · Sep 3
- Lowest min temperature48.9ºF · Sep 15
Geo Interior - South Dakota
Location
- Country
- United States
- State
- South Dakota
- County
- Jackson
- City
- Interior
- Zip Code
- 57750
- Elevation
- 2320 ft
- Longitude
- -101.98
- Latitude
- 43.73
- ICAO
- –
- IATA
- –