Aberdeen (35 mi WNW), South Dakota climate: Climate normals at a NOAA weather station
Aberdeen (35 mi WNW)'s normal year runs from 4°F January nights to 81°F July afternoons, with 19.9 inches of precipitation a year. (NOAA 1991-2020 normals)
In metric: a yearly mean of 5.5°C, January lows of −16°C, July highs of 27°C, 505 mm of precipitation a year.
- NOAA stationAberdeen (35 mi WNW)
- Station IDUSW00054933
- Location45.71°N 99.13°W
- Elevation1,957 ft (597 m)
Normals describe a typical year at the station, not a forecast. The National Weather Service forecast for Aberdeen (35 mi WNW).
- Jan 21° 4°
- Feb 24° 7°
- Mar 38° 18°
- Apr 53° 31°
- May 66° 43°
- Jun 75° 53°
- Jul 81° 58°
- Aug 79° 56°
- Sep 71° 47°
- Oct 55° 33°
- Nov 39° 20°
- Dec 25° 9°
Each month: normal high (large) and low, °F. Fill: the month's normal mean, colder blue to hotter red.
What is the weather like at Aberdeen (35 mi WNW) each month?
July is the warmest month, with normal highs of 81°F; January the coldest, with normal lows of 4°F. The most precipitation falls in June (3.30 in), the least in November (0.45 in).
| Month | High | Low | Mean | Precip. | Wet days | 90°F days | Freezing nights | Daylight |
|---|---|---|---|---|---|---|---|---|
| January | 21°F | 4°F | 12.2°F | 0.50 | 7 | <1 | 31 | 9 h |
| February | 24°F | 7°F | 15.4°F | 0.52 | 6 | <1 | 28 | 10 h 20 min |
| March | 38°F | 18°F | 27.8°F | 1.40 | 8 | <1 | 28 | 11 h 50 min |
| April | 53°F | 31°F | 42.1°F | 1.65 | 9 | <1 | 17 | 13 h 30 min |
| May | 66°F | 43°F | 54.4°F | 2.92 | 10 | <1 | 4 | 14 h 50 min |
| June | 75°F | 53°F | 63.9°F | 3.30 | 12 | 1 | <1 | 15 h 40 min |
| July | 81°F | 58°F | 69.5°F | 2.96 | 10 | 4 | <1 | 15 h 20 min |
| August | 79°F | 56°F | 67.8°F | 2.06 | 8 | 3 | <1 | 14 h 10 min |
| September | 71°F | 47°F | 59.1°F | 2.00 | 8 | 1 | <1 | 12 h 40 min |
| October | 55°F | 33°F | 44.1°F | 1.57 | 8 | <1 | 14 | 11 h |
| November | 39°F | 20°F | 29.3°F | 0.45 | 5 | <1 | 27 | 9 h 30 min |
| December | 25°F | 9°F | 17.2°F | 0.55 | 7 | <1 | 31 | 8 h 40 min |
| Year (annual) | 52°F | 32°F | 41.9°F | 19.88 | 96 | 9 | 179 |
The same normals in °C and millimetres
| Month | High | Low | Mean | Precip. |
|---|---|---|---|---|
| January | −6°C | −16°C | −11.0°C | 13 mm |
| February | −4°C | −14°C | −9.2°C | 13 mm |
| March | 3°C | −8°C | −2.3°C | 36 mm |
| April | 12°C | −1°C | 5.6°C | 42 mm |
| May | 19°C | 6°C | 12.4°C | 74 mm |
| June | 24°C | 12°C | 17.7°C | 84 mm |
| July | 27°C | 15°C | 20.8°C | 75 mm |
| August | 26°C | 13°C | 19.9°C | 52 mm |
| September | 22°C | 8°C | 15.1°C | 51 mm |
| October | 13°C | 1°C | 6.7°C | 40 mm |
| November | 4°C | −7°C | −1.5°C | 11 mm |
| December | −4°C | −13°C | −8.2°C | 14 mm |
NOAA publishes no 1991-2020 snowfall normal for this station. The nearest record that keeps one, Ipswich (19 miles away), gets 34 inches of snow in a normal year; elevation and distance can change that.
Source: NOAA NCEI 1991-2020 monthly normals, station USW00054933; 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.
Which months are mildest at Aberdeen (35 mi WNW)?
Normal highs sit between 65°F and 85°F in May, June, July, August and September. Of those, September has the fewest days with rain (8).
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 USW00054933.
When is the last frost at Aberdeen (35 mi WNW)?
In Aberdeen (35 mi WNW), the last spring frost (32°F) comes after May 10 in half of years and after May 22 in one year in ten; the first autumn frost comes before September 30 in half of years and before September 19 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 101 year in 10 after May 22; 9 in 10 after April 28
- First autumn frost, half of years before
- September 301 year in 10 before September 19; 9 in 10 before October 12
NOAA puts the median frost-free season at 143 days, and the season without a hard freeze (28°F) at 161 days.
A hard freeze (28°F) comes after May 1 in half of springs and before October 9 in half of autumns.
The USDA's 2023 Plant Hardiness Zone Map puts Aberdeen (35 mi WNW) in zone 4b in ZIP code 57456, the nearest ZIP area.
Frost dates for every NOAA station in South Dakota · Frost dates by ZIP code
Source: NOAA NCEI 1991-2020 annual normals (frost probabilities), station USW00054933; USDA 2023 Plant Hardiness Zone Map, ZIP listings: PRISM Group, Oregon State University, https://prism.oregonstate.edu, accessed October 8, 2026. 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 at Aberdeen (35 mi WNW)?
In a normal year in Aberdeen (35 mi WNW), 9 days a year reach 90°F, 179 nights fall to 32°F or colder and 96 days bring measurable precipitation.
- Days at 90°F or more
- 9a normal year
- Days at 100°F or more
- fewer than 1a normal year
- Nights at 32°F or colder
- 179a normal year
- Days that stay below freezing
- 94high of 32°F or less
- Days with 0.01 inch of precipitation
- 96a normal year
Source: NOAA NCEI 1991-2020 annual normals, station USW00054933.
How sunny is it at Aberdeen (35 mi WNW)?
Over a year 78% of the sunlight that would reach the ground under clear skies gets through the clouds at Aberdeen (35 mi WNW), 4.1 kWh per square metre a day. July is the sunniest month (85%) and December the cloudiest (70%).
| Month | Share of clear-sky sunshine | Sunshine, kWh/m² a day |
|---|---|---|
| January | 79% | 1.9 |
| February | 81% | 3.0 |
| March | 75% | 4.0 |
| April | 73% | 5.0 |
| May | 73% | 5.8 |
| June | 79% | 6.5 |
| July | 85% | 6.8 |
| August | 83% | 5.6 |
| September | 79% | 4.3 |
| October | 72% | 2.8 |
| November | 73% | 1.9 |
| December | 70% | 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 many heating and cooling degree days does Aberdeen (35 mi WNW) record?
A normal year at Aberdeen (35 mi WNW) brings 8,768 heating degree days, 63% more than the median U.S. place (5,373), and 395 cooling degree days, 56% fewer than the median (908). Eight months need 300 or more heating degree days, a monthly mean of about 55°F or colder. For gardens and crops, NOAA counts 2,156 growing degree days a year above 50°F.
| Month | Heating | Cooling |
|---|---|---|
| January | 1,638 | 0 |
| February | 1,389 | 0 |
| March | 1,153 | 0 |
| April | 687 | 0 |
| May | 339 | 12 |
| June | 92 | 61 |
| July | 18 | 159 |
| August | 38 | 126 |
| September | 213 | 35 |
| October | 650 | 2 |
| November | 1,070 | 0 |
| December | 1,480 | 0 |
| Year (annual) | 8,768 | 395 |
Source: NOAA NCEI 1991-2020 monthly normals, station USW00054933. 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.
Have recent years at Aberdeen (35 mi WNW) been warmer than normal?
2025 averaged 43.6°F, 1.7°F above the 1991-2020 normal of 41.9°F. 3 of the 4 complete years since 2021 ran warmer than the normal.
| Year | Mean | Against normal | Precip. |
|---|---|---|---|
| 2021 | 45.2°F | +3.3°F | 17.86 |
| 2022 | 40.9°F | −1.0°F | 18.06 |
| 2023 | 43.0°F | +1.1°F | 21.40 |
| 2025 | 43.6°F | +1.7°F | 25.12 |
Source: observed years: ACIS, station USW00054933. A year counts only with all twelve months complete.
How does Aberdeen (35 mi WNW)'s climate compare?
Aberdeen (35 mi WNW) is warmer than 1 of the 100 places with their own NOAA record in South Dakota, and wetter than 25. Across the 7,247 U.S. stations with normals, its annual mean of 41.9°F is warmer than 9%.
In the Köppen classification computed from these normals, Aberdeen (35 mi WNW) is Dfb: continental, no dry season, warm 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.
Questions about Aberdeen (35 mi WNW)'s climate
What is the coldest month at Aberdeen (35 mi WNW)?
January, with a normal high of 21°F and a normal low of 4°F. The warmest is July (81°F by day, 58°F at night).
Does it snow at Aberdeen (35 mi WNW)?
Yes. NOAA publishes no 1991-2020 snowfall normal for the station; the nearest record that keeps one, Ipswich (19 miles away), records 34 inches of snow in a normal year.
What is the rainiest month at Aberdeen (35 mi WNW)?
June, with 3.30 in of precipitation in a normal year; the driest is November with 0.45 in.
What plant hardiness zone is Aberdeen (35 mi WNW) in?
The USDA's 2023 map puts Aberdeen (35 mi WNW) in zone 4b in ZIP code 57456, the nearest ZIP area.
How late can frost come at Aberdeen (35 mi WNW)?
In half of years the last 32°F night comes after May 10; in one year in ten it comes after May 22. Waiting until May 22 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
- Leola, SD9 miles from this station, 42.2°F a year
- Ipswich, SD19 miles from this station, 43.7°F a year
- Roscoe, SD21 miles from this station, 42.6°F a year
- Eureka, SD24 miles from this station, 41.8°F a year
- Compare two placesMonth by month, side by side
Download these normals (CSV) · JSON · How these figures are made