Aberdeen weather in May: Aberdeen, South Dakota: normal highs, lows, rain and records for May
Aberdeen in May has a normal high of 70°F and a normal low of 44°F, a daily mean of 57°F, rising from 65°F on the 1st to 76°F by the 31st. Measurable precipitation falls on 10 days in a normal May, 3.28 inches in all. (NOAA 1991-2020 normals)
In metric: a normal high of 21°C and low of 7°C, 83 mm of precipitation in May.
- NOAA stationAberdeen Regional Airport
- Station IDUSW00014929
- Location45.46°N 98.41°W
- Elevation1,302 ft (397 m)
- Population27,919
- Jan 24° 2°
- Feb 29° 6°
- Mar 42° 19°
- Apr 58° 31°
- May 70° 44°
- Jun 80° 55°
- Jul 85° 60°
- Aug 83° 57°
- Sep 75° 47°
- Oct 59° 33°
- Nov 43° 19°
- Dec 29° 8°
Each month: normal high (large) and low, °F. Fill: the month's normal mean, colder blue to hotter red.
How warm is Aberdeen in May?
The normal high is 70°F and the normal low 44°F, for a daily mean of 57.3°F. May is 12.8°F warmer than April and 10.3°F cooler than June. May is the 5th warmest month of the year in Aberdeen and the 2nd wettest. Across the month the normal high rises 11°F, from 65°F on May 1 to 76°F on May 31. From one year to the next May's mean temperature typically moves about 2.9°F either way (NOAA's standard deviation), so roughly two Mays in three average between 54°F and 60°F.
Bars above: each day's normal high to low. Columns below: the chance of 0.01 inch or more of precipitation that day, on a scale of 0 to 100% (highest 37%).
| Day | High | Low | Chance of 0.01 in | Chance of 0.10 in |
|---|---|---|---|---|
| May 1 | 65°F | 38°F | 32% | 18% |
| May 8 | 67°F | 41°F | 33% | 19% |
| May 15 | 70°F | 44°F | 34% | 20% |
| May 22 | 73°F | 47°F | 35% | 21% |
| May 31 | 76°F | 51°F | 37% | 22% |
Every day of May: normal high, low and chance of precipitation (warmest afternoon May 31, coldest night May 1)
| Day | High | Low | Chance of 0.01 in | Chance of 0.10 in | Daylight |
|---|---|---|---|---|---|
| May 1 | 65°F | 38°F | 32% | 18% | 14 h 20 min |
| May 2 | 65°F | 38°F | 32% | 18% | 14 h 20 min |
| May 3 | 65°F | 39°F | 32% | 18% | 14 h 20 min |
| May 4 | 66°F | 39°F | 32% | 19% | 14 h 20 min |
| May 5 | 66°F | 39°F | 33% | 19% | 14 h 30 min |
| May 6 | 67°F | 40°F | 33% | 19% | 14 h 30 min |
| May 7 | 67°F | 40°F | 33% | 19% | 14 h 30 min |
| May 8 | 67°F | 41°F | 33% | 19% | 14 h 30 min |
| May 9 | 68°F | 41°F | 33% | 19% | 14 h 40 min |
| May 10 | 68°F | 42°F | 33% | 19% | 14 h 40 min |
| May 11 | 69°F | 42°F | 33% | 20% | 14 h 40 min |
| May 12 | 69°F | 43°F | 34% | 20% | 14 h 40 min |
| May 13 | 69°F | 43°F | 34% | 20% | 14 h 50 min |
| May 14 | 70°F | 44°F | 34% | 20% | 14 h 50 min |
| May 15 | 70°F | 44°F | 34% | 20% | 14 h 50 min |
| May 16 | 71°F | 44°F | 34% | 20% | 14 h 50 min |
| May 17 | 71°F | 45°F | 34% | 20% | 15 h |
| May 18 | 71°F | 45°F | 34% | 20% | 15 h |
| May 19 | 72°F | 46°F | 34% | 20% | 15 h |
| May 20 | 72°F | 46°F | 34% | 20% | 15 h |
| May 21 | 72°F | 47°F | 35% | 21% | 15 h |
| May 22 | 73°F | 47°F | 35% | 21% | 15 h 10 min |
| May 23 | 73°F | 47°F | 35% | 21% | 15 h 10 min |
| May 24 | 73°F | 48°F | 35% | 21% | 15 h 10 min |
| May 25 | 74°F | 48°F | 35% | 21% | 15 h 10 min |
| May 26 | 74°F | 49°F | 36% | 22% | 15 h 10 min |
| May 27 | 75°F | 49°F | 36% | 22% | 15 h 20 min |
| May 28 | 75°F | 49°F | 36% | 22% | 15 h 20 min |
| May 29 | 75°F | 50°F | 36% | 22% | 15 h 20 min |
| May 30 | 76°F | 50°F | 36% | 22% | 15 h 20 min |
| May 31 | 76°F | 51°F | 37% | 22% | 15 h 20 min |
- Normal high
- 70°FMay average
- Normal low
- 44°FMay average
- Precipitation
- 3.28 inmonth total
- Days with precipitation
- 100.01 inch or more
- Days at 90°F or more
- 1
- Nights at 32°F or colder
- 3
- Daylight
- 14 h 20 min to 15 h 20 minMay 1 to May 31
- Days at 70°F or more
- 16
- Days at 80°F or more
- 6
- Sunshine
- 73%of clear-sky sunlight (NASA)
Source: NOAA NCEI 1991-2020 daily normals, station USW00014929; monthly normals. Daylight is computed from the place's latitude with NOAA's solar equations.
Does it rain in Aberdeen in May?
On a given May day the chance of 0.01 inch or more is 34% on average, highest around May 31 (37%). In all, 3.28 in falls on 10 days of a normal May, 1 of them with an inch or more.
In a normal May in Aberdeen, 1 days reach 90°F and 3 nights fall to freezing.
Source: NOAA NCEI 1991-2020 daily and monthly normals, station USW00014929.
How humid and windy is Aberdeen in May?
At 3 p.m. the normal temperature is 72°F with 45% relative humidity and a dew point of 50°F; at 6 a.m. it is 54°F with 83% humidity. The wind averages 10.5 mph, most often from the south-southeast in the afternoon. A dew point under 50°F feels dry.
| Time | Temperature | Dew point | Humidity | Wind | Clear or few clouds |
|---|---|---|---|---|---|
| 6 a.m. | 54°F | 49°F | 83% | 8.6 mph | 57% |
| 9 a.m. | 64°F | 51°F | 64% | 12.1 mph | 63% |
| noon | 69°F | 50°F | 50% | 13.1 mph | 49% |
| 3 p.m. | 72°F | 50°F | 45% | 13.1 mph | 56% |
| 6 p.m. | 71°F | 50°F | 47% | 11.9 mph | 54% |
| 9 p.m. | 62°F | 51°F | 67% | 8.1 mph | 68% |
Source: NOAA NCEI 1991-2020 hourly normals, station USW00014929. Hourly normals exist only for NOAA's first-order stations; a dash where NOAA publishes no value for that hour (the sky at some hours).
What are the records for May in Aberdeen?
The warmest May temperature on Aberdeen's official record (since 1893) is 110°F, on May 30, 1934; the coldest is 13°F, on May 3, 2005. The wettest May brought 12.39 in (1906); the snowiest, 4.0 inches (1924).
The May mean against the 1991-2020 normal of 57.3°F: 2021 57.6°F (+0.3), 2022 57.2°F (−0.1), 2023 63.6°F (+6.3), 2024 57.5°F (+0.2), 2025 57.0°F (−0.3), 2026 56.8°F (−0.5). 3 of 6 ran warmer than normal.
| May | Mean | Against normal | Precip. |
|---|---|---|---|
| 2021 | 57.6°F | +0.3°F | 1.61 in |
| 2022 | 57.2°F | −0.1°F | 7.00 in |
| 2023 | 63.6°F | +6.3°F | 1.53 in |
| 2024 | 57.5°F | +0.2°F | 2.85 in |
| 2025 | 57.0°F | −0.3°F | 3.70 in |
| 2026 | 56.8°F | −0.5°F | 3.57 in |
Source: records: ACIS, NWS threaded record ABRthr; recent months: ACIS, station USW00014929. Records and recent months use complete months only.
How does May in Aberdeen compare across South Dakota?
Across the 100 places PlainClimate covers in South Dakota, May normal highs run from 60°F in Custer to 73°F in Wagner; Aberdeen's is 70°F.
Source: NOAA NCEI 1991-2020 monthly normals for every station in the state.