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 |
What is the average weather in Fort Thompson, South Dakota?
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 | 29.4 | 7.3 | 0.01 | 0.01 | 1.00 | 2.54 |
| 2 Jan | 29.2 | 7.2 | 0.03 | 0.03 | 1.00 | 2.54 |
| 3 Jan | 29.1 | 7.1 | 0.04 | 0.04 | 2.00 | 5.08 |
| 4 Jan | 29.0 | 7.1 | 0.06 | 0.06 | 3.00 | 7.62 |
| 5 Jan | 29.0 | 7.0 | 0.07 | 0.07 | 4.00 | 10.16 |
| 6 Jan | 28.9 | 7.0 | 0.09 | 0.09 | 5.00 | 12.70 |
| 7 Jan | 28.9 | 6.9 | 0.10 | 0.10 | 6.00 | 15.24 |
| 8 Jan | 28.8 | 6.9 | 0.12 | 0.12 | 7.00 | 17.78 |
| 9 Jan | 28.8 | 6.9 | 0.14 | 0.14 | 8.00 | 20.32 |
| 10 Jan | 28.8 | 6.9 | 0.15 | 0.15 | 8.00 | 20.32 |
| 11 Jan | 28.8 | 6.8 | 0.17 | 0.17 | 9.00 | 22.86 |
| 12 Jan | 28.8 | 6.8 | 0.18 | 0.18 | 10.00 | 25.40 |
| 13 Jan | 28.8 | 6.8 | 0.20 | 0.20 | 11.00 | 27.94 |
| 14 Jan | 28.9 | 6.8 | 0.22 | 0.22 | 11.00 | 27.94 |
| 15 Jan | 28.9 | 6.8 | 0.23 | 0.23 | 12.00 | 30.48 |
| 16 Jan | 29.0 | 6.8 | 0.25 | 0.25 | 13.00 | 33.02 |
| 17 Jan | 29.1 | 6.8 | 0.27 | 0.27 | 13.00 | 33.02 |
| 18 Jan | 29.1 | 6.8 | 0.28 | 0.28 | 14.00 | 35.56 |
| 19 Jan | 29.2 | 6.8 | 0.30 | 0.30 | 15.00 | 38.10 |
| 20 Jan | 29.3 | 6.8 | 0.32 | 0.32 | 16.00 | 40.64 |
| 21 Jan | 29.4 | 6.8 | 0.33 | 0.33 | 17.00 | 43.18 |
| 22 Jan | 29.6 | 6.8 | 0.35 | 0.35 | 18.00 | 45.72 |
| 23 Jan | 29.7 | 6.8 | 0.36 | 0.36 | 19.00 | 48.26 |
| 24 Jan | 29.8 | 6.8 | 0.38 | 0.38 | 20.00 | 50.80 |
| 25 Jan | 29.9 | 6.8 | 0.39 | 0.39 | 20.00 | 50.80 |
| 26 Jan | 30.1 | 6.9 | 0.40 | 0.40 | 22.00 | 55.88 |
| 27 Jan | 30.3 | 6.9 | 0.42 | 0.42 | 23.00 | 58.42 |
| 28 Jan | 30.4 | 6.9 | 0.43 | 0.43 | 24.00 | 60.96 |
| 29 Jan | 30.6 | 7.0 | 0.45 | 0.45 | 25.00 | 63.50 |
| 30 Jan | 30.8 | 7.0 | 0.46 | 0.46 | 26.00 | 66.04 |
| 31 Jan | 31.0 | 7.1 | 0.48 | 0.48 | 27.00 | 68.58 |
Weather history Fort Thompson - July 2026
| Day | High ºF | Low ºF | Precip. inch | Snow inch | Snow d. inch |
|---|---|---|---|---|---|
| 01 Jul | 89.1 | 63.0 | 0.11 | - | - |
| 02 Jul | 87.1 | 64.0 | 0.00 | - | - |
| 03 Jul | 88.0 | 57.9 | 2.34 | - | - |
| 04 Jul | - | - | - | - | - |
| 05 Jul | - | - | - | - | - |
| 06 Jul | - | - | - | - | - |
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| 31 Jul | - | - | - | - | - |
Past weather Fort Thompson
| Jul 26 | Normal | ||
|---|---|---|---|
| Average high temperature Av. high temp. | 88.1 ºF | 30 ºF | |
| Average low temperature Av. low temp. | 61.6 ºF | 8 ºF | |
| Total precipitation Total precip. | 2.45 inch | 0.47 inch | |
| Total snowfall Total snowfall | - inch | 0 inch | |
| Highest max temperature Highest max temp. | 89.1 ºF | - | |
| Lowest max temperature Lowest max temp. | 87.1 ºF | - | |
| Highest min temperature Highest min temp. | 64.0 ºF | - | |
| Lowest min temperature Lowest min temp. | 57.9 ºF | - | |
Past weather July 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 | 08:44 PM | |
|---|---|---|
| Sunrise | 05:59 AM | |
| Sunset | 09:25 PM | |
| Day/Night | Day | |
| 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, ...