Climateby Month

Aberdeen, SD climate by month

NOAA 1991-2020 normals · 1,305 ft elevation

Aberdeen has warm summers and very cold and snowy winters. Highs peak at 85°F in July and fall to 24°F in January. Wet days are spread through the year, from about 6 to 12 a month. Normal snowfall is about 43 in a year. By our comfort score the best month is May.

Warmest month
85°F
July normal high
Coldest month
2°F
January normal low
Wet days a year
98
21.8 in of precipitation
Snow a year
42.7 in
normal snowfall

How warm is Aberdeen?

Normal highs range from 24°F in January to 85°F in July.

0°20°40°60°80°100° January: normal high 24°F (-4°C), low 2°F (-17°C) 24° 2° February: normal high 29°F (-2°C), low 6°F (-14°C) March: normal high 42°F (6°C), low 19°F (-7°C) April: normal high 58°F (14°C), low 31°F (-1°C) May: normal high 70°F (21°C), low 44°F (7°C) June: normal high 80°F (27°C), low 55°F (13°C) July: normal high 85°F (29°C), low 60°F (16°C) 85° 60° August: normal high 83°F (28°C), low 57°F (14°C) September: normal high 75°F (24°C), low 47°F (8°C) October: normal high 59°F (15°C), low 33°F (1°C) November: normal high 43°F (6°C), low 19°F (-7°C) December: normal high 29°F (-2°C), low 8°F (-13°C) JFMAMJJASOND

Bars run from the normal low to the normal high for each month.

How rainy is Aberdeen?

June has the most wet days (about 12); the year brings about 22 in of precipitation.

January: 7 wet days February: 7 wet days March: 8 wet days April: 8 wet days May: 10 wet days June: 12 wet days 12 July: 10 wet days August: 8 wet days September: 8 wet days October: 8 wet days November: 6 wet days 6 December: 7 wet days JFMAMJJASOND

Wet day: at least 0.01 in of rain or melted snow, counted from daily records 1991-2020.

How much does it snow?

Normal snowfall is 42.7 in a year, most of it in February.

January: 7.8 in of snow February: 8.6 in of snow 8.6 March: 6.3 in of snow April: 4.2 in of snow May: 0.0 in of snow 0.0 June: 0.0 in of snow July: 0.0 in of snow August: 0.0 in of snow September: 0.0 in of snow October: 1.3 in of snow November: 6.5 in of snow December: 8.0 in of snow JFMAMJJASOND

How humid is Aberdeen?

Muggy days peak in July, at about 9 days.

January: 0 muggy days 0 February: 0 muggy days March: 0 muggy days April: 0 muggy days May: 0 muggy days June: 3 muggy days July: 9 muggy days 9 August: 6 muggy days September: 1 muggy days October: 0 muggy days November: 0 muggy days December: 0 muggy days JFMAMJJASOND

Muggy day: daily mean dew point of 65°F or higher, from hourly observations 1991-2020 at Aberdeen Regional Airport, 3.8 mi ESE of the city center.

How much daylight?

Daylight ranges from about 8.8 hours in December to 15.6 hours in June.

January: 9.2 hours of daylight February: 10.4 hours of daylight March: 11.9 hours of daylight April: 13.5 hours of daylight May: 14.9 hours of daylight June: 15.6 hours of daylight 15.6 July: 15.3 hours of daylight August: 14.1 hours of daylight September: 12.5 hours of daylight October: 10.9 hours of daylight November: 9.5 hours of daylight December: 8.8 hours of daylight 8.8 JFMAMJJASOND
See all numbers
Monthly climate normals and day counts for Aberdeen, 1991-2020
MonthHighLowPrecip.Wet daysSnowMuggy daysDaylight
January 24°F2°F 0.6 in7 7.8 in 0 9.2 h
February 29°F6°F 0.6 in7 8.6 in 0 10.4 h
March 42°F19°F 0.9 in8 6.3 in 0 11.9 h
April 58°F31°F 1.9 in8 4.2 in 0 13.5 h
May 70°F44°F 3.3 in10 0.0 in 0 14.9 h
June 80°F55°F 3.8 in12 0.0 in 3 15.6 h
July 85°F60°F 3.1 in10 0.0 in 9 15.3 h
August 83°F57°F 2.2 in8 0.0 in 6 14.1 h
September 75°F47°F 2.0 in8 0.0 in 1 12.5 h
October 59°F33°F 2.1 in8 1.3 in 0 10.9 h
November 43°F19°F 0.7 in6 6.5 in 0 9.5 h
December 29°F8°F 0.6 in7 8.0 in 0 8.8 h

High and low: NOAA 1991-2020 normal daily high and low. Wet days: at least 0.01 in of rain or melted snow. Muggy days: daily mean dew point 65°F or higher.

Best months to visit Aberdeen

By our comfort score, the best month is May.

Comfort score by month (0-100) and its parts, in days per month
MonthScoreComfortableNotable rainHot or cold
Jan 260228
Feb 300223
Mar 422217
Apr 61844
May 741561
Jun 691373
Jul 60766
Aug 641044
Sep 691442
Oct 55843
Nov 372215
Dec 270226

Score = 40 × share of comfortable days + 25 × share of days without notable rain + 20 × share of days neither hot (90°F+) nor cold (high 40°F or below) + 15 × daylight. How the score works.

Frost dates in Aberdeen

The last spring frost typically comes around May 9, and the first fall frost around Sep 26, leaving 139 frost-free days in a typical year.

Frost and freeze dates for Aberdeen
Typical date1 year in 10
Last spring frost (32°F)May 9after May 22
First fall frost (32°F)Sep 26before Sep 14
Last hard freeze (28°F)Apr 30after May 13
First hard freeze (28°F)Oct 4before Sep 23
Frost-free season139 daysunder 122 days

"Typical" is the date with a 50% chance of a later spring frost (or earlier fall frost). Planting after the "1 year in 10" spring date gives a 90% chance of no further frost. The Old Farmer's Almanac publishes 30% dates, which fall between our typical and 1-in-10 dates.

Station: Aberdeen (USW00014929), NOAA 1991-2020 freeze probabilities. Frost dates for every city in South Dakota.

Hottest and coldest readings, 1991-2020

The highest reading was 109°F (July 15, 2006); the lowest was -45°F (February 9, 1994).

From the temperature station's daily records with NOAA quality flags removed. Not an all-time record.

Near Aberdeen

Similar climates elsewhere

Where the numbers come from

  • Temperature, rain, snowfall, snow depth, frost dates and humidity and wind by hour: Aberdeen (USW00014929), 3.6 mi E of the city center, 1,302 ft . NOAA normals and daily records, 1991-2020.
  • Daily humidity and wind: Aberdeen Regional Airport (726590-14929), 3.8 mi ESE of the city center, 1,298 ft . Hourly observations, 1991-2020.
  • Not available for this location: cloud cover (no station close enough or similar enough in elevation).

Distances from the city center (USGS). Methodology · Report an error