Mobridge, South Dakota climate: Normal weather by month, frost dates and records
Mobridge's normal year runs from 6°F January nights to 87°F July afternoons, with 18.0 inches of precipitation and 31 inches of snow a year. (NOAA 1991-2020 normals)
In metric: a yearly mean of 8.0°C, January lows of −14°C, July highs of 31°C, 457 mm of precipitation a year.
- NOAA stationMobridge Municipal Airport
- Station IDUSW00094052
- Location45.55°N 100.41°W
- Elevation1,715 ft (523 m)
- Population3,219
On October 22, the normal high in Mobridge is 57°F and the normal low 34°F, and the chance of measurable rain or snow is 22%.
Normals describe a typical year at the station, not a forecast. The National Weather Service forecast for Mobridge.
- Jan 27° 6°
- Feb 32° 11°
- Mar 45° 22°
- Apr 59° 33°
- May 70° 45°
- Jun 80° 56°
- Jul 87° 62°
- Aug 86° 60°
- Sep 77° 50°
- Oct 60° 37°
- Nov 44° 23°
- Dec 32° 12°
Each month: normal high (large) and low, °F. Fill: the month's normal mean, colder blue to hotter red.
What is the weather like in Mobridge each month?
July is the warmest month, with normal highs of 87°F; January the coldest, with normal lows of 6°F. The most precipitation falls in June (3.08 in), the least in January (0.38 in).
| Month | High | Low | Mean | Precip. | Snow | Wet days | 90°F days | Freezing nights | Daylight |
|---|---|---|---|---|---|---|---|---|---|
| January | 27°F | 6°F | 16.8°F | 0.38 | 6.3 | 6 | <1 | 31 | 9 h |
| February | 32°F | 11°F | 21.2°F | 0.65 | 6.4 | 7 | <1 | 27 | 10 h 20 min |
| March | 45°F | 22°F | 33.4°F | 0.71 | 4.1 | 7 | <1 | 27 | 11 h 50 min |
| April | 59°F | 33°F | 45.8°F | 1.58 | 3.2 | 8 | <1 | 15 | 13 h 30 min |
| May | 70°F | 45°F | 57.6°F | 2.94 | 0.0 | 11 | 1 | 3 | 14 h 50 min |
| June | 80°F | 56°F | 67.9°F | 3.08 | 0.0 | 12 | 4 | <1 | 15 h 40 min |
| July | 87°F | 62°F | 74.5°F | 2.33 | 0.0 | 9 | 12 | <1 | 15 h 20 min |
| August | 86°F | 60°F | 72.8°F | 2.05 | 0.0 | 8 | 9 | <1 | 14 h 10 min |
| September | 77°F | 50°F | 63.2°F | 1.52 | 0.0 | 7 | 3 | 1 | 12 h 40 min |
| October | 60°F | 37°F | 48.4°F | 1.81 | 1.7 | 8 | <1 | 11 | 11 h |
| November | 44°F | 23°F | 33.5°F | 0.43 | 3.6 | 4 | <1 | 26 | 9 h 30 min |
| December | 32°F | 12°F | 21.8°F | 0.51 | 5.7 | 5 | <1 | 31 | 8 h 40 min |
| Year (annual) | 58°F | 35°F | 46.4°F | 17.99 | 31.0 | 91 | 29 | 171 |
The same normals in °C and millimetres
| Month | High | Low | Mean | Precip. | Snow |
|---|---|---|---|---|---|
| January | −3°C | −14°C | −8.4°C | 10 mm | 16 cm |
| February | 0°C | −12°C | −6.0°C | 17 mm | 16 cm |
| March | 7°C | −5°C | 0.8°C | 18 mm | 10 cm |
| April | 15°C | 1°C | 7.7°C | 40 mm | 8 cm |
| May | 21°C | 7°C | 14.2°C | 75 mm | 0 cm |
| June | 27°C | 13°C | 19.9°C | 78 mm | 0 cm |
| July | 31°C | 16°C | 23.6°C | 59 mm | 0 cm |
| August | 30°C | 15°C | 22.7°C | 52 mm | 0 cm |
| September | 25°C | 10°C | 17.3°C | 39 mm | 0 cm |
| October | 16°C | 3°C | 9.1°C | 46 mm | 4 cm |
| November | 7°C | −5°C | 0.8°C | 11 mm | 9 cm |
| December | 0°C | −11°C | −5.7°C | 13 mm | 14 cm |
Source: NOAA NCEI 1991-2020 monthly normals, station USW00094052; annual normals. Wet days: 0.01 inch or more; 90°F days and freezing nights: NOAA's day counts. Daylight: sunrise to sunset on the 15th, computed from the latitude.
When is the best weather to visit Mobridge?
Normal highs sit between 65°F and 85°F in May, June and September. Of those, September has the fewest days with rain (7).
That is a measurement, not a recommendation: it counts the months whose normal afternoon high sits between 65°F and 85°F, where a light layer is enough by day.
Source: NOAA NCEI 1991-2020 monthly normals, station USW00094052.
When is the last frost in Mobridge?
In Mobridge, the last spring frost (32°F) comes after May 5 in half of years and after May 20 in one year in ten; the first autumn frost comes before October 4 in half of years and before September 21 in one year in ten.
Frost-free in half of yearsFrost in 1 to 9 years out of 10Frost most years
- Last spring frost, half of years after
- May 51 year in 10 after May 20; 9 in 10 after April 23
- First autumn frost, half of years before
- October 41 year in 10 before September 21; 9 in 10 before October 17
NOAA puts the median frost-free season at 150 days, and the season without a hard freeze (28°F) at 169 days.
A hard freeze (28°F) comes after April 28 in half of springs and before October 12 in half of autumns.
The USDA's 2023 Plant Hardiness Zone Map puts Mobridge in zone 4b in ZIP code 57631, the nearest ZIP area. By the map's own method, the average of each year's coldest night over 1991-2020, Mobridge's NOAA station is in zone 4b: the coldest night of a typical year reaches −24°F (23 complete years).
Frost dates for every NOAA station in South Dakota · Frost dates by ZIP code
Source: NOAA NCEI 1991-2020 annual normals (frost probabilities), station USW00094052; USDA 2023 Plant Hardiness Zone Map, ZIP listings: PRISM Group, Oregon State University, https://prism.oregonstate.edu, accessed October 8, 2026; the station zone: ACIS daily lows, 1991-2020. A 10% date means one year in ten has a frost after it in spring or before it in autumn.
How hot and how cold does it get in Mobridge?
In a normal year in Mobridge, 29 days a year reach 90°F (4 of them 100°F or more), 171 nights fall to 32°F or colder and 91 days bring measurable precipitation.
- Days at 90°F or more
- 29a normal year
- Days at 100°F or more
- 4a normal year
- Nights at 32°F or colder
- 171a normal year
- Days that stay below freezing
- 65high of 32°F or less
- Days with 0.01 inch of precipitation
- 91a normal year
- Days with 1 inch of snow or more
- 11a normal year
The highest temperature in Mobridge's official record (kept by the National Weather Service since 1911) is 116°F, on July 16, 1936; the lowest is −44°F, on February 19, 1929.
The wettest calendar year on that record is 2019, with 29.51 in; the snowiest season is 2018–19, with 86.8 inches.
Source: NOAA NCEI 1991-2020 annual normals, station USW00094052; records: ACIS (NOAA Regional Climate Centers), NWS threaded record MBGthr. Records use complete months only; a month missing more than three days is left out.
How sunny is Mobridge?
Over a year 78% of the sunlight that would reach the ground under clear skies gets through the clouds in the area around Mobridge, 4.1 kWh per square metre a day. July is the sunniest month (86%) and December the cloudiest (69%).
| Month | Share of clear-sky sunshine | Sunshine, kWh/m² a day |
|---|---|---|
| January | 75% | 1.8 |
| February | 79% | 2.9 |
| March | 73% | 3.8 |
| April | 72% | 5.0 |
| May | 74% | 5.9 |
| June | 80% | 6.7 |
| July | 86% | 6.9 |
| August | 84% | 5.8 |
| September | 81% | 4.4 |
| October | 73% | 2.9 |
| November | 73% | 1.9 |
| December | 69% | 1.4 |
Source: NASA POWER solar climatology, 2001-2020 (CERES SYN1deg). Satellite-based, for the 1-degree cell (about 100 km across) around the station, so it describes the area rather than the airport.
How much heating and cooling does Mobridge need?
A normal year in Mobridge brings 7,549 heating degree days, 41% more than the median U.S. place (5,373), and 812 cooling degree days, 10% fewer than the median (908). Seven months need 300 or more heating degree days, a monthly mean of about 55°F or colder. For gardens and crops, NOAA counts 2,857 growing degree days a year above 50°F.
| Month | Heating | Cooling |
|---|---|---|
| January | 1,496 | 0 |
| February | 1,228 | 0 |
| March | 980 | 0 |
| April | 577 | 1 |
| May | 257 | 27 |
| June | 52 | 139 |
| July | 6 | 300 |
| August | 13 | 254 |
| September | 138 | 84 |
| October | 520 | 7 |
| November | 945 | 0 |
| December | 1,339 | 0 |
| Year (annual) | 7,549 | 812 |
Source: NOAA NCEI 1991-2020 monthly normals, station USW00094052. A degree day is one degree of a day's mean temperature below 65°F (heating) or above it (cooling); utilities use them to estimate energy use.
Has Mobridge been warmer than normal lately?
2025 averaged 46.3°F, 0.1°F below the 1991-2020 normal of 46.4°F. 3 of the 5 complete years since 2021 ran warmer than the normal.
| Year | Mean | Against normal | Precip. | Snow |
|---|---|---|---|---|
| 2021 | 49.2°F | +2.8°F | 15.91 | 7.8 |
| 2022 | 45.6°F | −0.8°F | 16.98 | 15.7 |
| 2023 | 46.9°F | +0.5°F | 21.55 | 35.5 |
| 2024 | 49.1°F | +2.7°F | 14.15 | 8.7 |
| 2025 | 46.3°F | −0.1°F | 24.34 | 14.3 |
Source: observed years: ACIS, station USW00094052. A year counts only with all twelve months complete.
How does Mobridge's climate compare?
Mobridge is warmer than 61 of the other 99 places with their own NOAA record in South Dakota, and wetter than 12. Across the 7,247 U.S. stations with normals, its annual mean of 46.4°F is warmer than 25%.
In the Köppen classification computed from these normals, Mobridge is Dfa: continental, no dry season, hot summer. What the classes mean.
Places with the most similar year elsewhere
Measured month by month on the normal high, low and precipitation, among places of 20,000 or more people in other states:
Source: NOAA NCEI 1991-2020 normals for every station PlainClimate covers. Similarity: the root-mean-square difference of the 36 monthly figures, precipitation weighted so an inch counts like 6°F.
Which places near Mobridge share this climate record?
2 places have no NOAA station with 1991-2020 normals of their own, and this station is the nearest full record. A place's own climate can differ from these figures, by several degrees where it sits much higher or lower than the station, nearer the coast, or inside a large city's heat; for the larger places the next nearest records are named with their yearly mean, so the spread around them is visible, and places of 50,000 or more have their own page with NOAA's gridded normals.
- Wakpala, SD159 people · 10 mi NW
- Glenham, SD107 people · 7 mi E
Source: Census Bureau 2024 Gazetteer (place centers) and Vintage 2024 population estimates. Distance and direction from the station to each place's center.
What do Mobridge's other NOAA stations record?
One more NOAA station keeps 1991-2020 normals in or near Mobridge. This page uses Mobridge Municipal Airport; the other differs by site and elevation:
| Station | From this station | Elevation | Year | Jan low | Jul high | Precip. | Snow | Last frost |
|---|---|---|---|---|---|---|---|---|
| Mobridge (2 mi NNW) USC00395691 | 2 mi NW | 1,693 ft | 44.9°F | 6°F | 85°F | 17.3 | 36 | May 3 |
Source: NOAA NCEI 1991-2020 normals for each station. Last frost: the median last spring date of 32°F.
Questions about Mobridge's climate
What is the coldest month in Mobridge?
January, with a normal high of 27°F and a normal low of 6°F. The warmest is July (87°F by day, 62°F at night).
Does it snow in Mobridge?
Yes: 31 inches in a normal year, falling on 23 days with 0.1 inch or more, the most in February (6.4 inches).
What is the rainiest month in Mobridge?
June, with 3.08 in of precipitation in a normal year; the driest is January with 0.38 in.
What plant hardiness zone is Mobridge in?
The USDA's 2023 map puts Mobridge in zone 4b in ZIP code 57631, the nearest ZIP area. By the same method at Mobridge's NOAA station, the coldest night of a typical year reaches −24°F (23 years, 1991-2020): zone 4b.
How late can frost come in Mobridge?
In half of years the last 32°F night comes after May 5; in one year in ten it comes after May 20. Waiting until May 20 leaves about a one-in-ten chance of a later frost.
Nearby and next
- South Dakota climateThe statewide normals and every place in the state
- Selby, SD18 miles from this station, 43.7°F a year
- Pollock, SD25 miles from this station, 44.3°F a year
- McLaughlin, SD27 miles from this station, 43.2°F a year
- Timber Lake, SD34 miles from this station, 45.3°F a year
- Compare two placesMonth by month, side by side
Download these normals (CSV) · JSON · How these figures are made