Custer weather in April: Custer, South Dakota: normal highs, lows, rain and records for April
Custer in April has a normal high of 50°F and a normal low of 29°F, a daily mean of 39°F, rising from 47°F on the 1st to 54°F by the 30th. Measurable precipitation falls on 12 days in a normal April, 2.42 inches in all. (NOAA 1991-2020 normals)
In metric: a normal high of 10°C and low of −2°C, 61 mm of precipitation in April.
- NOAA stationCuster County Airport
- Station IDUSW00094032
- Location43.73°N 103.61°W
- Elevation5,545 ft (1,690 m)
- Population1,829
- Jan 35° 15°
- Feb 35° 15°
- Mar 44° 22°
- Apr 50° 29°
- May 60° 38°
- Jun 71° 47°
- Jul 79° 54°
- Aug 78° 52°
- Sep 69° 43°
- Oct 54° 32°
- Nov 43° 22°
- Dec 35° 16°
Each month: normal high (large) and low, °F. Fill: the month's normal mean, colder blue to hotter red.
How warm is Custer in April?
The normal high is 50°F and the normal low 29°F, for a daily mean of 39.3°F. April is 6.4°F warmer than March and 9.3°F cooler than May. April is the 7th warmest month of the year in Custer and the 4th wettest. Across the month the normal high rises 7°F, from 47°F on April 1 to 54°F on April 30. From one year to the next April's mean temperature typically moves about 2.6°F either way (NOAA's standard deviation), so roughly two Aprils in three average between 37°F and 42°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 43%).
| Day | High | Low | Chance of 0.01 in | Chance of 0.10 in |
|---|---|---|---|---|
| April 1 | 47°F | 26°F | 33% | 16% |
| April 8 | 48°F | 27°F | 35% | 18% |
| April 15 | 50°F | 28°F | 38% | 20% |
| April 22 | 52°F | 30°F | 40% | 21% |
| April 30 | 54°F | 32°F | 43% | 23% |
Every day of April: normal high, low and chance of precipitation (warmest afternoon April 30, coldest night April 1)
| Day | High | Low | Chance of 0.01 in | Chance of 0.10 in | Daylight |
|---|---|---|---|---|---|
| April 1 | 47°F | 26°F | 33% | 16% | 12 h 40 min |
| April 2 | 47°F | 26°F | 33% | 16% | 12 h 40 min |
| April 3 | 48°F | 26°F | 34% | 16% | 12 h 50 min |
| April 4 | 48°F | 26°F | 34% | 17% | 12 h 50 min |
| April 5 | 48°F | 27°F | 34% | 17% | 12 h 50 min |
| April 6 | 48°F | 27°F | 35% | 17% | 13 h |
| April 7 | 48°F | 27°F | 35% | 17% | 13 h |
| April 8 | 48°F | 27°F | 35% | 18% | 13 h |
| April 9 | 49°F | 27°F | 36% | 18% | 13 h 10 min |
| April 10 | 49°F | 27°F | 36% | 18% | 13 h 10 min |
| April 11 | 49°F | 27°F | 36% | 18% | 13 h 10 min |
| April 12 | 49°F | 28°F | 36% | 19% | 13 h 10 min |
| April 13 | 49°F | 28°F | 37% | 19% | 13 h 20 min |
| April 14 | 50°F | 28°F | 37% | 19% | 13 h 20 min |
| April 15 | 50°F | 28°F | 38% | 20% | 13 h 20 min |
| April 16 | 50°F | 28°F | 38% | 20% | 13 h 30 min |
| April 17 | 50°F | 29°F | 38% | 20% | 13 h 30 min |
| April 18 | 50°F | 29°F | 39% | 20% | 13 h 30 min |
| April 19 | 51°F | 29°F | 39% | 21% | 13 h 30 min |
| April 20 | 51°F | 29°F | 39% | 21% | 13 h 40 min |
| April 21 | 51°F | 29°F | 40% | 21% | 13 h 40 min |
| April 22 | 52°F | 30°F | 40% | 21% | 13 h 40 min |
| April 23 | 52°F | 30°F | 40% | 22% | 13 h 50 min |
| April 24 | 52°F | 30°F | 41% | 22% | 13 h 50 min |
| April 25 | 52°F | 31°F | 41% | 22% | 13 h 50 min |
| April 26 | 53°F | 31°F | 41% | 22% | 13 h 50 min |
| April 27 | 53°F | 31°F | 42% | 22% | 14 h |
| April 28 | 53°F | 31°F | 42% | 22% | 14 h |
| April 29 | 54°F | 32°F | 42% | 23% | 14 h |
| April 30 | 54°F | 32°F | 43% | 23% | 14 h |
- Normal high
- 50°FApril average
- Normal low
- 29°FApril average
- Precipitation
- 2.42 inmonth total
- Days with precipitation
- 120.01 inch or more
- Nights at 32°F or colder
- 22
- Daylight
- 12 h 40 min to 14 hApril 1 to April 30
- Days at 70°F or more
- 2
- Sunshine
- 72%of clear-sky sunlight (NASA)
Source: NOAA NCEI 1991-2020 daily normals, station USW00094032; monthly normals. Daylight is computed from the place's latitude with NOAA's solar equations.
Does it rain in Custer in April?
On a given April day the chance of 0.01 inch or more is 38% on average, highest around April 30 (43%). In all, 2.42 in falls on 12 days of a normal April.
In a normal April in Custer, 22 nights fall to freezing and 2 days stay below freezing all day.
Source: NOAA NCEI 1991-2020 daily and monthly normals, station USW00094032.
How humid and windy is Custer in April?
At 3 p.m. the normal temperature is 51°F with 43% relative humidity and a dew point of 29°F; at 6 a.m. it is 37°F with 70% humidity. The wind averages 7.1 mph, most often from the west-northwest in the afternoon. A dew point under 50°F feels dry.
| Time | Temperature | Dew point | Humidity | Wind | Clear or few clouds |
|---|---|---|---|---|---|
| 6 a.m. | 37°F | 28°F | 70% | 5.4 mph | – |
| 9 a.m. | 47°F | 28°F | 48% | 8.5 mph | – |
| noon | 50°F | 28°F | 43% | 9.8 mph | – |
| 3 p.m. | 51°F | 29°F | 43% | 9.6 mph | – |
| 6 p.m. | 47°F | 29°F | 50% | 8.1 mph | – |
| 9 p.m. | 40°F | 29°F | 65% | 5.5 mph | – |
Source: NOAA NCEI 1991-2020 hourly normals, station USW00094032. 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 April in Custer?
The warmest April temperature on this station's record (since 1999) is 81°F, on April 24, 2012; the coldest is −4°F, on April 7, 2007. The wettest April brought 3.78 in (2009).
The April mean against the 1991-2020 normal of 39.3°F: 2021 37.5°F (−1.8), 2022 35.0°F (−4.3), 2023 37.4°F (−1.9), 2024 41.0°F (+1.8), 2025 39.8°F (+0.5), 2026 39.3°F (at normal). 2 of 6 ran warmer than normal.
| April | Mean | Against normal | Precip. |
|---|---|---|---|
| 2021 | 37.5°F | −1.8°F | 2.77 in |
| 2022 | 35.0°F | −4.3°F | 2.17 in |
| 2023 | 37.4°F | −1.9°F | 1.00 in |
| 2024 | 41.0°F | +1.8°F | 1.76 in |
| 2025 | 39.8°F | +0.5°F | 2.13 in |
| 2026 | 39.3°F | at normal | 1.57 in |
Source: records: ACIS, station USW00094032; recent months: ACIS, station USW00094032. Records and recent months use complete months only.
How does April in Custer compare across South Dakota?
Across the 100 places PlainClimate covers in South Dakota, April normal highs run from 50°F in Custer to 62°F in Armour; Custer's is 50°F.
Source: NOAA NCEI 1991-2020 monthly normals for every station in the state.