Climate Fort Thompson - South Dakota
| JanJa | FebFe | MarMa | AprAp | MayMa | JunJu | |
|---|---|---|---|---|---|---|
| Average high in ºF Av. high Hi | 30 | 35 | 46 | 60 | 71 | 80 |
| Average low in ºF Av. low Lo | 8 | 12 | 22 | 34 | 46 | 56 |
| Av. precipitation in inch Av. precip. Pre. | 0.47 | 0.40 | 1.20 | 1.74 | 2.92 | 3.74 |
| JulJu | AugAu | SepSe | OctOc | NovNo | DecDe | |
|---|---|---|---|---|---|---|
| Average high in ºF Av. high Hi | 87 | 86 | 77 | 62 | 46 | 33 |
| Average low in ºF Av. low Lo | 62 | 60 | 50 | 36 | 23 | 12 |
| Av. precipitation in inch Av. precip. Pre. | 2.65 | 2.26 | 2.25 | 1.41 | 0.57 | 0.26 |
Fort Thompson experiences a humid continental climate, marked by very large seasonal temperature contrasts. Summers are warm, while winters are cold. The area is dry overall, with a strong seasonal pattern where summers are wetter and winters are the driest period.
Fort Thompson Climate Graph - South Dakota Climate Chart
Daily normals Fort Thompson - South Dakota - January
Day | High ºF | Low ºF | Prec/mo inch | Prec/yr inch | Snow/mo inch | Snow/yr inch |
|---|---|---|---|---|---|---|
| 1 Jan | 30.0 | 8.5 | 0.00 | 0.00 | 0.00 | 0.00 |
| 2 Jan | 29.9 | 8.4 | 0.04 | 0.04 | 0.00 | 0.00 |
| 3 Jan | 29.9 | 8.3 | 0.04 | 0.04 | 0.00 | 0.00 |
| 4 Jan | 29.9 | 8.2 | 0.08 | 0.08 | 0.00 | 0.00 |
| 5 Jan | 29.8 | 8.1 | 0.08 | 0.08 | 0.00 | 0.00 |
| 6 Jan | 29.8 | 8.0 | 0.08 | 0.08 | 0.00 | 0.00 |
| 7 Jan | 29.8 | 7.9 | 0.12 | 0.12 | 0.00 | 0.00 |
| 8 Jan | 29.8 | 7.9 | 0.12 | 0.12 | 0.00 | 0.00 |
| 9 Jan | 29.8 | 7.8 | 0.16 | 0.16 | 0.00 | 0.00 |
| 10 Jan | 29.8 | 7.7 | 0.16 | 0.16 | 0.00 | 0.00 |
| 11 Jan | 29.8 | 7.7 | 0.20 | 0.20 | 0.00 | 0.00 |
| 12 Jan | 29.8 | 7.6 | 0.20 | 0.20 | 0.00 | 0.00 |
| 13 Jan | 29.8 | 7.6 | 0.24 | 0.24 | 0.00 | 0.00 |
| 14 Jan | 29.9 | 7.5 | 0.24 | 0.24 | 0.00 | 0.00 |
| 15 Jan | 29.9 | 7.5 | 0.24 | 0.24 | 0.00 | 0.00 |
| 16 Jan | 29.9 | 7.5 | 0.28 | 0.28 | 0.00 | 0.00 |
| 17 Jan | 30.0 | 7.5 | 0.28 | 0.28 | 0.00 | 0.00 |
| 18 Jan | 30.0 | 7.5 | 0.31 | 0.31 | 0.00 | 0.00 |
| 19 Jan | 30.1 | 7.5 | 0.31 | 0.31 | 0.00 | 0.00 |
| 20 Jan | 30.1 | 7.5 | 0.31 | 0.31 | 0.00 | 0.00 |
| 21 Jan | 30.2 | 7.5 | 0.35 | 0.35 | 0.00 | 0.00 |
| 22 Jan | 30.3 | 7.5 | 0.35 | 0.35 | 0.00 | 0.00 |
| 23 Jan | 30.4 | 7.6 | 0.35 | 0.35 | 0.00 | 0.00 |
| 24 Jan | 30.5 | 7.6 | 0.39 | 0.39 | 0.00 | 0.00 |
| 25 Jan | 30.6 | 7.7 | 0.39 | 0.39 | 0.00 | 0.00 |
| 26 Jan | 30.7 | 7.7 | 0.39 | 0.39 | 0.00 | 0.00 |
| 27 Jan | 30.8 | 7.8 | 0.43 | 0.43 | 0.00 | 0.00 |
| 28 Jan | 31.0 | 7.9 | 0.43 | 0.43 | 0.00 | 0.00 |
| 29 Jan | 31.1 | 8.0 | 0.43 | 0.43 | 0.00 | 0.00 |
| 30 Jan | 31.3 | 8.1 | 0.47 | 0.47 | 0.00 | 0.00 |
| 31 Jan | 31.5 | 8.3 | 0.47 | 0.47 | 0.00 | 0.00 |
Weather history Fort Thompson - June 2026
| Day | High ºF | Low ºF | Precip. inch | Snow inch | Snow d. inch |
|---|---|---|---|---|---|
| 01 Jun | 88.0 | 54.0 | 0.01 | - | - |
| 02 Jun | 82.9 | 57.0 | 0.00 | - | - |
| 03 Jun | 87.1 | 60.1 | 2.40 | - | - |
| 04 Jun | 84.0 | 60.1 | 0.00 | - | - |
| 05 Jun | 86.0 | 60.1 | 1.20 | - | - |
| 06 Jun | 87.1 | 61.0 | 0.00 | - | - |
| 07 Jun | 91.0 | 63.0 | 0.00 | - | - |
| 08 Jun | 86.0 | 68.0 | 0.01 | - | - |
| 09 Jun | 77.0 | 63.0 | 0.00 | - | - |
| 10 Jun | 93.0 | 63.0 | 0.34 | - | - |
| 11 Jun | - | - | - | - | - |
| 12 Jun | - | - | - | - | - |
| 13 Jun | 88.0 | 53.1 | 0.00 | - | - |
| 14 Jun | - | - | - | - | - |
| 15 Jun | 77.0 | 48.0 | 0.00 | - | - |
| 16 Jun | - | - | - | - | - |
| 17 Jun | - | - | - | - | - |
| 18 Jun | - | - | - | - | - |
| 19 Jun | - | - | - | - | - |
| 20 Jun | - | - | - | - | - |
| 21 Jun | - | - | - | - | - |
| 22 Jun | - | - | - | - | - |
| 23 Jun | - | - | - | - | - |
| 24 Jun | - | - | - | - | - |
| 25 Jun | - | - | - | - | - |
| 26 Jun | - | - | - | - | - |
| 27 Jun | - | - | - | - | - |
| 28 Jun | - | - | - | - | - |
| 29 Jun | - | - | - | - | - |
| 30 Jun | - | - | - | - | - |
Past weather Fort Thompson
| Jun 26 | Normal | ||
|---|---|---|---|
| Average high temperature Av. high temp. | 85.6 ºF | 30 ºF | |
| Average low temperature Av. low temp. | 59.2 ºF | 8 ºF | |
| Total precipitation Total precip. | 3.96 inch | 0.47 inch | |
| Total snowfall Total snowfall | - inch | 0 inch | |
| Highest max temperature Highest max temp. | 93.0 ºF | - | |
| Lowest max temperature Lowest max temp. | 77.0 ºF | - | |
| Highest min temperature Highest min temp. | 68.0 ºF | - | |
| Lowest min temperature Lowest min temp. | 48.0 ºF | - | |
Past weather June 2026 incomplete - Missing data
Geo Fort Thompson - South Dakota
| Country | United States | |
|---|---|---|
| State | South Dakota | |
| County | - | |
| City | Fort Thompson | |
| Zip Code | 57339 | |
| Longitude | -99.44 dec. degr. | |
| Latitude | 44.07 dec. degr. | |
| Altitude - Elevation | 1440ft | |
| ICAO | - | |
| IATA | - |
Date and Time Fort Thompson - South Dakota
| Local Time | 02:26 AM | |
|---|---|---|
| Sunrise | 05:52 AM | |
| Sunset | 09:25 PM | |
| Day/Night | Night | |
| Timezone | Central Daylight Time | |
| Timezone DB | America - Chicago |
Map of Fort Thompson - South Dakota
USGS National Map — Open interactive map
Fort Thompson weather averages
| Annual high temperature | 59ºF |
| Annual low temperature | 35ºF |
| Average annual precip. | 19.87 inch |
Station Data
Monthly averages Fort Thompson
Longitude: -99.4379, Latitude: 44.0686
Average weather Fort Thompson, SD - 57339
Monthly: 1991-2020 normals
History: 2008-2026
Abbreviations
Average precipitation in : Av. precipitation in
Jan: January, Feb: February, ...Jan: January, Feb: February, ...Ja: January, Fe: February, ...