Sioux Falls weather in July

In July, Sioux Falls sees average daytime highs of 82°F and overnight lows near 64°F, with 3.3 in of rain across 8.9 wet days and about 14.9 hours of daylight. It is the 1st-warmest and 5th-wettest month of the year here.

Day-to-day highs hold fairly steady near 82°F through the month. The sky is clear or mostly clear about 47% of the time in July, and the air most often feels humid.

Daylight stretches from about 15 h 12 min at the start of July to 14 h 30 min by month's end. Set against the rest of the year, July is Sioux Falls's 2nd-clearest and 11th-windiest month. For the whole year in context, see Sioux Falls's year-round climate.

Daytime high
82°
1st warmest
Overnight low
64°
12th coldest
Rainfall
3.3 in
8.9 wet days
Daylight
14 h 54 min
5:04 AM – 8:01 PM
Cloud cover
44%
2nd clearest
Wind
8 mph
11th windiest
Solar energy
6.67 kWh/m²
Travel score
6.5
out of 10

Sioux Falls is city in and seat of Minnehaha County, and largest city in South Dakota, United States.

Density
872/km²
people per km²
Founded
1856

Air quality: WHO Ambient Air Quality Database. Density & description: Wikidata (CC0), GeoNames.

Temperature in July

Average highAverage lowShaded bands: 10–90% of days

Day-to-day highs hold fairly steady near 82°F through the month.

A typical July day in Sioux Falls reaches about 82°F in the afternoon and slips back to 64°F overnight — a 19°F spread between the day's warmth and the night's chill. On most days the high lands between 74°F and 91°F. Set against its neighbours, July runs about 4°F warmer than June and about 2°F warmer than August.

50°60°70°80°90°151015202531
Avg high (°F)Avg low (°F)
18163
28263
38263
48263
58263
68263
78263
88264
98364
108364
118364
128364
138364
148364
158364
168364
178364
188364
198364
208364
218364
228364
238364
248364
258263
268263
278263
288263
298263
308263
318263

How July really feels in Sioux Falls

Once humidity and wind are folded in, July averages 0 days that feel above 90°F and 0 that feel at or below 32°F — the comfort signal a plain temperature reading hides.

Days feeling ≥ 90°F
0
heat index over the day's high
Days feeling ≤ 32°F
0
wind chill below the day's low

July sits comfortably in between — no days that feel dangerously hot or drop to a hard freeze once humidity and wind are folded in.

Sioux Falls weather by month

How July compares with the rest of the year at a glance. July is the 1st-warmest and 5th-wettest month here — the current month is highlighted below.

MonthHigh / Low (°F)Rainfall (inches)Wet daysSnow daysDaylight (hours)Travel score
Jan26° / 10°0.84.74.49.10.0
Feb31° / 13°0.94.84.410.20.0
Mar43° / 24°1.86.63.711.61.0
Apr57° / 36°3.610.32.213.24.0
May69° / 49°4.512.5014.55.9
Jun78° / 59°5.112.5015.26.4
Jul82° / 64°3.38.9014.96.5
Aug80° / 61°3.38.8013.87.0
Sep73° / 52°3.27.9012.37.2
Oct59° / 39°2.470.710.85.0
Nov43° / 25°1.65.53.19.50.9
Dec30° / 15°1.054.88.80.0

Cloud cover in July

ClearMostly clearPartly cloudyMostly cloudyOvercast

The sky is clear or mostly clear about 47% of the time in July.

Beyond those clear spells, partly cloudy skies cover about 21% of July, with mostly cloudy or overcast conditions the remaining 32%.

0%25%50%75%100%151015202531
Clearer (%)Cloudier (%)
16436
26436
36436
46436
56535
66535
76535
86733
96733
106733
116931
126931
137030
147030
157030
167030
177129
187129
197129
207030
217129
227129
237129
247129
257030
267030
277030
287030
296931
306931
316931

Chance of precipitation in July

Any precipitation

Sioux Falls gets around 3.3 in of rain over 8.9 wet days in July. The line is the day-by-day chance of measurable precipitation.

Day to day, the chance of measurable rain averages around 29% and peaks near 33% on the wettest days.

0%10%20%30%40%151015202531
Rain chance (%)
133
232
332
431
531
630
730
830
930
1029
1129
1229
1329
1429
1529
1629
1729
1829
1929
2029
2128
2228
2328
2428
2527
2627
2727
2827
2927
3027
3128

Humidity in July

DryComfortableHumidMuggyOppressiveMiserable

Most of July feels humid — the stacked bands show each day's mix of comfort levels, read off the dew point.

By dew point, July lands in the humid band about 28% of days. Sticky, muggy-or-worse air turns up on roughly 41% of them.

0%25%50%75%100%151015202531
Dry (%)Comfortable (%)Humid (%)Muggy (%)Oppressive (%)Miserable (%)
11821262960
21721263070
31620273070
41520273080
51420273080
61320283180
71220283190
81219283190
911192832100
1010192832111
1110182832121
129182831131
139182831141
149182730151
159182729151
169182728161
179182728172
1810182727172
1910182726172
2010182726172
2111182825172
2211192824162
2311192824162
2412202823152
2512212823152
2612212823142
2712222823132
2812232823122
2912232823121
3012242824111
3112242824101

Wind in July

Winds average 8 mph in July.

Across July, daily wind ranges from about 8 mph on the calmest days to 9 mph at its breeziest. It stays fairly steady from day to day.

051015151015202531
Wind speed (mph)Feels
19light breeze
29light breeze
39light breeze
49light breeze
59light breeze
69light breeze
79light breeze
89light breeze
98light breeze
108light breeze
118light breeze
128light breeze
138light breeze
148light breeze
158light breeze
168light breeze
178light breeze
188light breeze
198light breeze
208light breeze
218light breeze
228light breeze
238light breeze
248light breeze
258light breeze
268light breeze
278light breeze
288light breeze
298light breeze
308light breeze
318light breeze

Sunrise & sunset in July

DaylightNight

Daylight runs from about 15 h 12 min at the start of July to 14 h 30 min by month's end. The lit band spans sunrise to sunset each day.

Days shrink by about 42 minutes over July. Sunrise moves from 4:54 AM to 5:19 AM, and sunset from 8:06 PM to 7:47 PM.

12 AM4 AM8 AM12 PM4 PM8 PM12 AM151015202531
Daylight (h)Sunrise (AM)Sunset (PM)
115.24:548:06
215.24:558:06
315.24:558:06
415.24:568:06
515.24:568:06
615.14:578:05
715.14:588:05
815.14:588:05
915.14:598:04
1015.15:008:04
1115.15:008:04
1215.05:018:03
1315.05:028:02
1415.05:038:02
1515.05:048:01
1614.95:048:01
1714.95:058:00
1814.95:067:59
1914.95:077:59
2014.85:087:58
2114.85:097:57
2214.85:107:56
2314.75:117:55
2414.75:127:54
2514.75:137:53
2614.65:147:52
2714.65:157:51
2814.65:167:50
2914.55:177:49
3014.55:187:48
3114.55:197:47

Solar energy in July

Daily solar energy (kWh/m²)

Average shortwave solar energy reaching the ground each day in July, about 6.67 kWh/m² — the sunniest month for solar.

For context, solar energy here swings from a low near 1.73 kWh/m² to a high of 6.67 kWh/m² in July across the year — July's 6.67 kWh/m² sits near the top of that range.

0246151015202531
Solar energy (kWh/m²)Level
16.7Intense
26.7Intense
36.7Intense
46.7Intense
56.8Intense
66.8Intense
76.8Intense
86.8Intense
96.8Intense
106.8Intense
116.8Intense
126.8Intense
136.7Intense
146.7Intense
156.7Intense
166.7Intense
176.7Intense
186.7Intense
196.7Intense
206.7Intense
216.6Intense
226.6Intense
236.6Intense
246.5Intense
256.5Intense
266.5Intense
276.5Intense
286.4Intense
296.4Intense
306.3Intense
316.3Intense
Planning a trip in July

Hazard calendar for Sioux Falls

In seasonPeak

In July, Sioux Falls sits inside its rainy season season. The full year is below, with each hazard's peak months called out.

Sioux Falls's rainy season runs April–October, when most of the year's rain falls.

Rainy season
Jan
Feb
Mar
Apr
May
Jun
Jul
Aug
Sep
Oct
Nov
Dec

Is July a good time to visit Sioux Falls?

Our two travel scores rate July for general sightseeing and for beach or pool weather — 0 (poor) to 10 (ideal).

6.5
Sightseeing
3rd-best month of the year
7.2
Beach & pool
1st-best month of the year

July is a reasonable time to visit Sioux Falls for sightseeing. The water and warmth also suit a beach or pool day.

What to pack for Sioux Falls in July

From July's temperature range, rain chance, sun and wind — what's worth putting in the bag.

In July, Sioux Falls sees daytime highs around 82°F and nights near 64°F. Pack light clothes and sun protection. Worth having: rain gear. About 9 days see rain.

light clothessun protectionrain gear

UV index in Sioux Falls in July

LowModerateHighVery highExtreme

Clear-sky midday UV in July peaks around 6 — enough to warrant sun protection. The full-year curve, shaded by WHO exposure level, is below.

Under clear skies, the midday UV index in Sioux Falls peaks around June 16 at about 8 (very high) — sunscreen, a hat and midday shade are essential. It bottoms out near December 22 at about 2 (low).

The index reaches 3 or more — the level where the WHO recommends sun protection — in 8 months of the year.

025710JanFebMarAprMayJunJulAugSepOctNovDecLowModerateHighVery highHighModerateLowJun 16UV 8Dec 22UV 2
UV index (midday)Level
Jan2Low
Feb2Moderate
Mar4Moderate
Apr5High
May6High
Jun9Very high
Jul6High
Aug7High
Sep6High
Oct4Moderate
Nov2Moderate
Dec2Low
Location & terrain

Where is Sioux Falls?

Sioux Falls sits at 43.5°N, 96.7°W, 1,470 ft above sea level, in United States. The nearest listed city is Brookings, 53 mi away.

Topography around Sioux Falls

How much the land rises and falls, and what covers it, within 2, 10 and 50 miles of Sioux Falls.

Within 2 miles, the terrain around Sioux Falls has only modest variations in elevation — a maximum elevation change of 246 ft around an average of 1,440 ft above sea level; within 10 miles, only modest variations in elevation — a maximum elevation change of 390 ft; within 50 miles, significant variations in elevation — a maximum elevation change of 843 ft.

The land around Sioux Falls is covered by artificial surfaces (47%) and trees (37%) within 2 miles, cropland (51%) and grassland (25%) within 10 miles, and cropland (83%) within 50 miles.

2 miles
246 ft
10 miles
390 ft
50 miles
843 ft
treesgrasslandcroplandartificial surfacesbare terrainwater
July weather nearby: Brookings 53 mi · Mitchell 66 mi · Sioux City 74 mi · Watertown 96 mi · Norfolk 111 mi · Willmar 137 mi · Mankato 142 mi · Fremont 146 mi

United States travel facts

Power plugs
Type A / B
120 V · 60 Hz
Prices
≈ 100% of US
price level, 2025
GDP per capita
$90,027
2025
Happiness
6.8 / 10
World Happiness, 2025
Safe drinking water
98%
of population, 2024
Homicide rate
5.8
per 100k, 2023
Road deaths
12.7
per 100k/yr, 2019
Income group
High
World Bank
Religion
Protestant 47%unaffiliated 23%Roman Catholic 21%Jewish 2%

Sources: World Bank, US State Department, World Happiness Report, WHO/UNICEF, EF EPI, CIA World Factbook.

Data sources

Temperature, precipitation, cloud, humidity, wind and solar figures are a 1991–2020 climatology for Sioux Falls (43.5437°, -96.728°, elevation 1,470 ft), computed from hourly ERA5 reanalysis — contains modified Copernicus Climate Change Service information. Sun figures are astronomical calculations, not observations. City data © GeoNames, CC BY 4.0. Map outlines from Natural Earth (public domain); interactive map © Google. UV index is derived from CAMS (Copernicus Atmosphere Monitoring Service) clear-sky UV data — contains modified Copernicus Atmosphere Monitoring Service information. Topography is sampled from the Copernicus DEM GLO-90 elevation model (© ESA/Airbus) and ESA WorldCover 2021 land cover (CC BY 4.0).