Sioux Falls weather in June
In June, Sioux Falls has daytime highs averaging 26 °C, nights around 16 °C, with 12 wet days. Figures are 1991–2020 climate normals.
- 25.7°C Average high
- 15.6°C Average low
- 12days Wet days
- 133mm Rainfall
- 15h Daylight
Daily temperatures through June
How June develops
Averages for the first, middle and last part of the month, from daily 1991–2020 normals. Chance of rain is the share of years in which that calendar day recorded more than 1 mm.
| Days | Avg high | Avg low | Chance of rain |
|---|---|---|---|
| 1–10 June | 24.3 °C | 14.0 °C | 40 % |
| 11–20 June | 26.0 °C | 15.8 °C | 40 % |
| 21–30 June | 26.8 °C | 16.9 °C | 41 % |
- Average highs rise from 24.3 °C early in June to 26.8 °C by the end of it.
What to expect
| Measure | Typical June | Share of the month |
|---|---|---|
| Days above 25 °C | 18 of 30 | 59 % |
| Days above 30 °C | 3.2 of 30 | 11 % |
| Days below 0 °C | 0 of 30 | 0 % |
| Days with more than 1 mm rain | 12 of 30 | 40 % |
Conditions in June
| Measure | Average |
|---|---|
| Mean temperature | 20 °C |
| Record high (1991–2020) | 35 °C |
| Record low (1991–2020) | 5.5 °C |
| Relative humidity | 70 % |
| Wind speed | 23 km/h |
| Cloud cover | 53 % |
June compared with the months around it
| Month | Avg high | Rainfall | Cloud |
|---|---|---|---|
| April | 14.5 °C | 90 mm | 60 % |
| May | 20.6 °C | 111 mm | 59 % |
| June | 25.7 °C | 133 mm | 53 % |
| July | 28.2 °C | 81 mm | 42 % |
| August | 27.1 °C | 84 mm | 44 % |
See all twelve months for Sioux Falls
- June is the 3rd warmest month here.
- It is the 12th driest month of the year.
- It ranks 5th for least cloud cover.
- Days last about 15 hours from sunrise to sunset.
- It rains on 12 of 30 days — 40 % of the month.
- Nights are about 10 °C cooler than the middle of the day.
- The hottest June day on record since 1991 reached 35 °C, 9.7 °C above the usual daytime high.
QuestionsJune in Sioux Falls, answered
How warm is Sioux Falls in June?
Daily highs average 26 °C and nights fall to about 16 °C, a spread of 10 °C between afternoon and dawn. That makes June the 3rd warmest month of the year here.
Does it rain much in Sioux Falls in June?
June averages 133 mm of rain, spread over about 12 of the 30 days — 40 % of the month. Cloud cover averages 53 % of the sky.
How long are the days in June?
Sioux Falls averages 15 hours between sunrise and sunset in June. Day length is computed from latitude and date, so it is exact rather than modelled — but it says nothing about how much of that time is sunny.
Data sources and method
- ERA5 / ERA5-Land reanalysis — Copernicus Climate Change Service (C3S), ECMWF. Copernicus Licence
- Open-Meteo — Open-Meteo.com. CC BY 4.0
- NOAA OISST v2.1 — NOAA Physical Sciences Laboratory. Public domain
- GeoNames — GeoNames.org. CC BY 4.0
- Normal period
- 1991–2020
- Dataset version
- era5-1991-2020-scores1.1
- Last processed
Measured values come from ERA5 reanalysis and are reproduced unchanged. Calculated by us: daylight hours, beach and comfort scores, monthly rankings, threshold day counts, chance of a wet day by date, ten-day averages within the month. Full formulas are on the methodology page.
Contains modified Copernicus Climate Change Service information 2026. Neither the European Commission nor ECMWF is responsible for any use that may be made of the Copernicus information or data it contains.