Sioux Falls weather in July: Sioux Falls, South Dakota: normal highs, lows, rain and records for July
Sioux Falls in July has a normal high of 85°F and a normal low of 63°F, a daily mean of 74°F, holding near 85°F all month. Measurable precipitation falls on 9 days in a normal July, 3.25 inches in all. (NOAA 1991-2020 normals)
In metric: a normal high of 30°C and low of 17°C, 83 mm of precipitation in July.
- NOAA stationSioux Falls Foss Field
- Station IDUSW00014944
- Location43.59°N 96.73°W
- Elevation1,430 ft (436 m)
- From the center3 miles
- Population209,289
- Jan 27° 9°
- Feb 32° 13°
- Mar 45° 24°
- Apr 59° 36°
- May 71° 48°
- Jun 81° 59°
- Jul 85° 63°
- Aug 83° 61°
- Sep 76° 52°
- Oct 61° 38°
- Nov 45° 25°
- Dec 32° 13°
Each month: normal high (large) and low, °F. Fill: the month's normal mean, colder blue to hotter red.
How warm is Sioux Falls in July?
The normal high is 85°F and the normal low 63°F, for a daily mean of 74.4°F. July is 4.5°F warmer than June and 2.4°F warmer than August. July is the warmest month of the year in Sioux Falls and the 4th wettest. Across the month the normal high rises 1°F, from 84°F on July 1 to 85°F on July 31. From one year to the next July's mean temperature typically moves about 3.2°F either way (NOAA's standard deviation), so roughly two Julys in three average between 71°F and 78°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 |
|---|---|---|---|---|
| July 1 | 84°F | 62°F | 34% | 21% |
| July 8 | 85°F | 63°F | 32% | 19% |
| July 15 | 86°F | 64°F | 31% | 18% |
| July 22 | 86°F | 64°F | 30% | 17% |
| July 31 | 85°F | 63°F | 30% | 17% |
Every day of July: normal high, low and chance of precipitation (warmest afternoon July 16, coldest night July 1)
| Day | High | Low | Chance of 0.01 in | Chance of 0.10 in | Daylight |
|---|---|---|---|---|---|
| July 1 | 84°F | 62°F | 34% | 21% | 15 h 20 min |
| July 2 | 85°F | 63°F | 33% | 20% | 15 h 20 min |
| July 3 | 85°F | 63°F | 33% | 20% | 15 h 20 min |
| July 4 | 85°F | 63°F | 33% | 20% | 15 h 20 min |
| July 5 | 85°F | 63°F | 32% | 20% | 15 h 20 min |
| July 6 | 85°F | 63°F | 32% | 19% | 15 h 20 min |
| July 7 | 85°F | 63°F | 32% | 19% | 15 h 20 min |
| July 8 | 85°F | 63°F | 32% | 19% | 15 h 20 min |
| July 9 | 85°F | 63°F | 31% | 19% | 15 h 20 min |
| July 10 | 85°F | 63°F | 31% | 19% | 15 h 20 min |
| July 11 | 86°F | 64°F | 31% | 18% | 15 h 10 min |
| July 12 | 86°F | 64°F | 31% | 18% | 15 h 10 min |
| July 13 | 86°F | 64°F | 31% | 18% | 15 h 10 min |
| July 14 | 86°F | 64°F | 31% | 18% | 15 h 10 min |
| July 15 | 86°F | 64°F | 31% | 18% | 15 h 10 min |
| July 16 | 86°F | 64°F | 30% | 18% | 15 h 10 min |
| July 17 | 86°F | 64°F | 30% | 18% | 15 h 10 min |
| July 18 | 86°F | 64°F | 30% | 18% | 15 h |
| July 19 | 86°F | 64°F | 30% | 18% | 15 h |
| July 20 | 86°F | 64°F | 30% | 18% | 15 h |
| July 21 | 86°F | 64°F | 30% | 17% | 15 h |
| July 22 | 86°F | 64°F | 30% | 17% | 15 h |
| July 23 | 86°F | 64°F | 30% | 17% | 14 h 50 min |
| July 24 | 86°F | 64°F | 30% | 17% | 14 h 50 min |
| July 25 | 85°F | 64°F | 30% | 17% | 14 h 50 min |
| July 26 | 85°F | 64°F | 30% | 17% | 14 h 50 min |
| July 27 | 85°F | 64°F | 30% | 17% | 14 h 50 min |
| July 28 | 85°F | 64°F | 30% | 17% | 14 h 50 min |
| July 29 | 85°F | 64°F | 30% | 17% | 14 h 40 min |
| July 30 | 85°F | 63°F | 30% | 17% | 14 h 40 min |
| July 31 | 85°F | 63°F | 30% | 17% | 14 h 40 min |
- Normal high
- 85°FJuly average
- Normal low
- 63°FJuly average
- Precipitation
- 3.25 inmonth total
- Days with precipitation
- 90.01 inch or more
- Days at 90°F or more
- 7
- Daylight
- 15 h 20 min to 14 h 40 minJuly 1 to July 31
- Days at 70°F or more
- 30
- Days at 80°F or more
- 24
- Sunshine
- 85%of clear-sky sunlight (NASA)
Source: NOAA NCEI 1991-2020 daily normals, station USW00014944; monthly normals. Daylight is computed from the place's latitude with NOAA's solar equations.
Does it rain in Sioux Falls in July?
On a given July day the chance of 0.01 inch or more is 31% on average, highest around July 1 (34%). In all, 3.25 in falls on 9 days of a normal July, 1 of them with an inch or more.
In a normal July in Sioux Falls, 7 days reach 90°F.
Source: NOAA NCEI 1991-2020 daily and monthly normals, station USW00014944.
How humid and windy is Sioux Falls in July?
At 3 p.m. the normal temperature is 81°F with 54% relative humidity and a dew point of 63°F; at 6 a.m. it is 64°F with 89% humidity. The wind averages 8.2 mph, most often from the south-southeast in the afternoon.
| Time | Temperature | Dew point | Humidity | Wind | Clear or few clouds |
|---|---|---|---|---|---|
| 6 a.m. | 64°F | 61°F | 89% | 5.7 mph | 52% |
| 9 a.m. | 73°F | 63°F | 71% | 8.8 mph | 67% |
| noon | 79°F | 63°F | 58% | 10.5 mph | 51% |
| 3 p.m. | 81°F | 63°F | 54% | 10.7 mph | 51% |
| 6 p.m. | 79°F | 63°F | 58% | 10.3 mph | 58% |
| 9 p.m. | 72°F | 64°F | 76% | 7.4 mph | 66% |
Source: NOAA NCEI 1991-2020 hourly normals, station USW00014944. 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 July in Sioux Falls?
The warmest July temperature on Sioux Falls's official record (since 1893) is 110°F, on July 17, 1936; the coldest is 34°F, on July 9, 1895. The wettest July brought 9.11 in (1900).
The July mean against the 1991-2020 normal of 74.4°F: 2021 75.6°F (+1.2), 2022 77.1°F (+2.7), 2023 74.0°F (−0.4), 2024 73.4°F (−1.0), 2025 74.3°F (−0.1), 2026 77.1°F (+2.7). 3 of 6 ran warmer than normal.
| July | Mean | Against normal | Precip. |
|---|---|---|---|
| 2021 | 75.6°F | +1.2°F | 4.90 in |
| 2022 | 77.1°F | +2.7°F | 2.40 in |
| 2023 | 74.0°F | −0.4°F | 1.28 in |
| 2024 | 73.4°F | −1.0°F | 1.17 in |
| 2025 | 74.3°F | −0.1°F | 5.16 in |
| 2026 | 77.1°F | +2.7°F | 2.70 in |
Source: records: ACIS, NWS threaded record FSDthr; recent months: ACIS, station USW00014944. Records and recent months use complete months only.
How does July in Sioux Falls compare across South Dakota?
Across the 100 places PlainClimate covers in South Dakota, July normal highs run from 79°F in Custer to 91°F in Interior; Sioux Falls's is 85°F.
Source: NOAA NCEI 1991-2020 monthly normals for every station in the state.