Watertown weather in April: Watertown, South Dakota: normal highs, lows, rain and records for April
Watertown in April has a normal high of 54°F and a normal low of 32°F, a daily mean of 43°F, rising from 47°F on the 1st to 61°F by the 30th. Measurable precipitation falls on 9 days in a normal April, 2.06 inches in all. (NOAA 1991-2020 normals)
In metric: a normal high of 12°C and low of 0°C, 52 mm of precipitation and 13 cm of snow in April.
- NOAA stationWatertown Regional Airport
- Station IDUSW00014946
- Location44.90°N 97.15°W
- Elevation1,748 ft (533 m)
- Population23,492
- Jan 21° 3°
- Feb 26° 7°
- Mar 39° 20°
- Apr 54° 32°
- May 67° 45°
- Jun 77° 55°
- Jul 82° 60°
- Aug 80° 58°
- Sep 72° 49°
- Oct 56° 35°
- Nov 40° 21°
- Dec 26° 9°
Each month: normal high (large) and low, °F. Fill: the month's normal mean, colder blue to hotter red.
How warm is Watertown in April?
The normal high is 54°F and the normal low 32°F, for a daily mean of 42.8°F. April is 13.7°F warmer than March and 12.9°F cooler than May. April is the 7th warmest month of the year in Watertown and the 6th wettest. Across the month the normal high rises 14°F, from 47°F on April 1 to 61°F on April 30. From one year to the next April's mean temperature typically moves about 4.1°F either way (NOAA's standard deviation), so roughly two Aprils in three average between 39°F and 47°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 34%).
| Day | High | Low | Chance of 0.01 in | Chance of 0.10 in |
|---|---|---|---|---|
| April 1 | 47°F | 26°F | 25% | 12% |
| April 8 | 50°F | 29°F | 27% | 14% |
| April 15 | 54°F | 31°F | 30% | 16% |
| April 22 | 57°F | 34°F | 32% | 17% |
| April 30 | 61°F | 37°F | 34% | 19% |
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 | 25% | 12% | 12 h 40 min |
| April 2 | 47°F | 27°F | 25% | 12% | 12 h 50 min |
| April 3 | 48°F | 27°F | 25% | 13% | 12 h 50 min |
| April 4 | 48°F | 27°F | 26% | 13% | 12 h 50 min |
| April 5 | 49°F | 28°F | 26% | 13% | 13 h |
| April 6 | 49°F | 28°F | 26% | 13% | 13 h |
| April 7 | 50°F | 28°F | 27% | 14% | 13 h |
| April 8 | 50°F | 29°F | 27% | 14% | 13 h 10 min |
| April 9 | 51°F | 29°F | 27% | 14% | 13 h 10 min |
| April 10 | 51°F | 29°F | 28% | 15% | 13 h 10 min |
| April 11 | 52°F | 30°F | 28% | 15% | 13 h 10 min |
| April 12 | 52°F | 30°F | 29% | 15% | 13 h 20 min |
| April 13 | 53°F | 30°F | 29% | 15% | 13 h 20 min |
| April 14 | 53°F | 31°F | 29% | 16% | 13 h 20 min |
| April 15 | 54°F | 31°F | 30% | 16% | 13 h 30 min |
| April 16 | 54°F | 32°F | 30% | 16% | 13 h 30 min |
| April 17 | 55°F | 32°F | 30% | 17% | 13 h 30 min |
| April 18 | 55°F | 32°F | 31% | 17% | 13 h 40 min |
| April 19 | 56°F | 33°F | 31% | 17% | 13 h 40 min |
| April 20 | 56°F | 33°F | 31% | 17% | 13 h 40 min |
| April 21 | 57°F | 34°F | 31% | 17% | 13 h 40 min |
| April 22 | 57°F | 34°F | 32% | 17% | 13 h 50 min |
| April 23 | 58°F | 34°F | 32% | 18% | 13 h 50 min |
| April 24 | 58°F | 35°F | 32% | 18% | 13 h 50 min |
| April 25 | 59°F | 35°F | 32% | 18% | 14 h |
| April 26 | 59°F | 36°F | 33% | 18% | 14 h |
| April 27 | 59°F | 36°F | 33% | 18% | 14 h |
| April 28 | 60°F | 37°F | 33% | 19% | 14 h |
| April 29 | 60°F | 37°F | 34% | 19% | 14 h 10 min |
| April 30 | 61°F | 37°F | 34% | 19% | 14 h 10 min |
- Normal high
- 54°FApril average
- Normal low
- 32°FApril average
- Precipitation
- 2.06 inmonth total
- Days with precipitation
- 90.01 inch or more
- Snowfall
- 5.2 inmonth total
- Nights at 32°F or colder
- 16
- Daylight
- 12 h 40 min to 14 h 10 minApril 1 to April 30
- Days at 70°F or more
- 4
- Days at 80°F or more
- 1
- Sunshine
- 71%of clear-sky sunlight (NASA)
Source: NOAA NCEI 1991-2020 daily normals, station USW00014946; monthly normals. Daylight is computed from the place's latitude with NOAA's solar equations.
Does it rain or snow in Watertown in April?
On a given April day the chance of 0.01 inch or more is 30% on average, highest around April 30 (34%). In all, 2.06 in falls on 9 days of a normal April.
In a normal April in Watertown, 16 nights fall to freezing, 2 days stay below freezing all day and snowfall averages 5.2 inches.
Snow falls on 2 days in a normal April, and an inch or more covers the ground on 4 days.
Source: NOAA NCEI 1991-2020 daily and monthly normals, station USW00014946.
How humid and windy is Watertown in April?
At 3 p.m. the normal temperature is 59°F with 42% relative humidity and a dew point of 36°F; at 6 a.m. it is 40°F with 80% humidity. The wind averages 11.7 mph, most often from the 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. | 40°F | 35°F | 80% | 9.1 mph | 61% |
| 9 a.m. | 50°F | 37°F | 60% | 13.5 mph | 62% |
| noon | 56°F | 36°F | 47% | 15.1 mph | 59% |
| 3 p.m. | 59°F | 36°F | 42% | 15.3 mph | 57% |
| 6 p.m. | 57°F | 36°F | 46% | 13.2 mph | 57% |
| 9 p.m. | 49°F | 37°F | 63% | 9.2 mph | 63% |
Source: NOAA NCEI 1991-2020 hourly normals, station USW00014946. 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 Watertown?
The warmest April temperature on this station's record (since 1893) is 95°F, on April 21, 1980; the coldest is −10°F, on April 5, 1926. The wettest April brought 6.48 in (2001); the snowiest, 29.5 inches (2008).
The April mean against the 1991-2020 normal of 42.8°F: 2021 43.0°F (+0.2), 2022 37.3°F (−5.5), 2023 39.0°F (−3.8), 2024 45.6°F (+2.8), 2025 44.4°F (+1.6), 2026 42.8°F (at normal). 3 of 6 ran warmer than normal.
| April | Mean | Against normal | Precip. |
|---|---|---|---|
| 2021 | 43.0°F | +0.2°F | 2.44 in |
| 2022 | 37.3°F | −5.5°F | 3.51 in |
| 2023 | 39.0°F | −3.8°F | 1.37 in |
| 2024 | 45.6°F | +2.8°F | 5.08 in |
| 2025 | 44.4°F | +1.6°F | 2.42 in |
| 2026 | 42.8°F | at normal | 1.86 in |
Source: records: ACIS, station USW00014946; recent months: ACIS, station USW00014946. Records and recent months use complete months only.
How does April in Watertown 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; Watertown's is 54°F.
Source: NOAA NCEI 1991-2020 monthly normals for every station in the state.