Williston weather in July

In July, Williston sees average daytime highs of 80°F and overnight lows near 58°F, with 2.3 in of rain across 8.2 wet days and about 15.4 hours of daylight. It is the 1st-warmest and 3rd-wettest month of the year here.

Highs climb over the month, from about 78°F in the first days to 82°F by the end. The sky is clear or mostly clear about 49% of the time in July, and the air most often feels dry.

Daylight stretches from about 15 h 48 min at the start of July to 14 h 54 min by month's end. Set against the rest of the year, July is Williston's 2nd-clearest and 12th-windiest month. For the whole year in context, see Williston's year-round climate.

Daytime high
80°
1st warmest
Overnight low
58°
12th coldest
Rainfall
2.3 in
8.2 wet days
Daylight
15 h 30 min
5:15 AM – 8:45 PM
Cloud cover
42%
2nd clearest
Wind
8 mph
12th windiest
Solar energy
6.84 kWh/m²
Travel score
7.1
out of 10

Williston is city in and seat of Williams County, North Dakota, United States of America.

Density
1,377/km²
people per km²
Founded
1887

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

Temperature in July

Average highAverage lowShaded bands: 10–90% of days

Highs climb over the month, from about 78°F in the first days to 82°F by the end.

A typical July day in Williston reaches about 80°F in the afternoon and slips back to 58°F overnight — a 23°F spread between the day's warmth and the night's chill. On most days the high lands between 70°F and 91°F. Set against its neighbours, July runs about 7°F warmer than June and on par with August.

40°60°80°151015202531
Avg high (°F)Avg low (°F)
17856
27856
37857
47857
57957
67957
77957
88058
98058
108058
118058
128058
138158
148158
158158
168158
178158
188158
198158
208158
218258
228258
238258
248258
258258
268258
278258
288258
298258
308257
318257

How July really feels in Williston

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.

Williston weather by month

How July compares with the rest of the year at a glance. July is the 1st-warmest and 3rd-wettest month here — the current month is highlighted below.

MonthHigh / Low (°F)Rainfall (inches)Wet daysSnow daysDaylight (hours)Travel score
Jan20° / 0.64.24.58.60.0
Feb25° / 0.53.73.89.90.0
Mar37° / 19°0.95.3411.60.2
Apr53° / 31°1.57.12.813.43.1
May65° / 42°2.69.30.714.95.8
Jun73° / 53°3.110.7015.86.7
Jul80° / 58°2.38.2015.47.1
Aug80° / 55°1.77.7014.17.3
Sep70° / 46°1.75.8012.47.2
Oct54° / 33°1.35.91.510.63.6
Nov37° / 20°0.84.93.890.1
Dec24° / 0.64.74.98.20.0

Cloud cover in July

ClearMostly clearPartly cloudyMostly cloudyOvercast

The sky is clear or mostly clear about 49% 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 30%. Skies tend to open up as the month goes on.

0%25%50%75%100%151015202531
Clearer (%)Cloudier (%)
16337
26337
36436
46535
56634
66634
76733
86733
96832
106931
116931
127030
137030
147030
157030
167129
177129
187228
197327
207327
217327
227327
237327
247327
257426
267426
277426
287426
297327
307426
317426

Chance of precipitation in July

Any precipitation

Williston gets around 2.3 in of rain over 8.2 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 27% and peaks near 33% on the wettest days. The odds ease toward the end of the month.

0%10%20%30%40%151015202531
Rain chance (%)
133
233
332
432
532
632
731
831
930
1030
1129
1229
1328
1427
1527
1626
1725
1825
1924
2024
2123
2223
2322
2422
2522
2622
2722
2823
2923
3024
3124

Humidity in July

DryComfortableHumidMuggyOppressiveMiserable

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

By dew point, July lands in the dry band about 54% of days. It rarely turns muggy — the humid and sticky bands barely register.

0%25%50%75%100%151015202531
Dry (%)Comfortable (%)Humid (%)Muggy (%)
16023152
25923162
35923162
45723173
55624173
65524183
75425183
85325193
95325193
105126203
115026204
125026204
135026204
144927204
154927204
164927204
174927194
185127193
195128183
205227183
215227183
225327173
235428162
245527162
255627152
265628142
275628142
285628142
295728132
305728132
315728132

Wind in July

Winds average 8 mph in July, the calmest month.

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
99light breeze
109light breeze
119light breeze
129light breeze
139light breeze
149light breeze
159light breeze
169light breeze
179light 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 48 min at the start of July to 14 h 54 min by month's end. The lit band spans sunrise to sunset each day.

Days shrink by about 54 minutes over July. Sunrise moves from 5:04 AM to 5:33 AM, and sunset from 8:52 PM to 8:28 PM.

12 AM4 AM8 AM12 PM4 PM8 PM12 AM151015202531
Daylight (h)Sunrise (AM)Sunset (PM)
115.85:048:52
215.85:048:52
315.85:058:52
415.85:058:51
515.85:068:51
615.75:078:51
715.75:078:50
815.75:088:50
915.75:098:49
1015.65:108:49
1115.65:118:48
1215.65:128:48
1315.65:138:47
1415.55:138:46
1515.55:148:46
1615.55:158:45
1715.55:168:44
1815.45:188:43
1915.45:198:42
2015.45:208:41
2115.35:218:40
2215.35:228:39
2315.25:238:38
2415.25:248:37
2515.25:258:36
2615.15:278:35
2715.15:288:33
2815.05:298:32
2915.05:308:31
3015.05:328:30
3114.95:338:28

Solar energy in July

Daily solar energy (kWh/m²)

Average shortwave solar energy reaching the ground each day in July, about 6.84 kWh/m² — the sunniest month for solar.

For context, solar energy here swings from a low near 1.29 kWh/m² to a high of 6.84 kWh/m² in July across the year — July's 6.84 kWh/m² sits near the top of that range.

0246151015202531
Solar energy (kWh/m²)Level
16.8Intense
26.8Intense
36.8Intense
46.8Intense
56.8Intense
66.8Intense
76.8Intense
86.8Intense
96.8Intense
106.8Intense
116.8Intense
126.8Intense
136.8Intense
146.8Intense
156.8Intense
166.8Intense
176.8Intense
186.8Intense
196.8Intense
206.8Intense
216.8Intense
226.8Intense
236.7Intense
246.7Intense
256.7Intense
266.7Intense
276.6Intense
286.6Intense
296.5Intense
306.5Intense
316.5Intense
Planning a trip in July

Is July a good time to visit Williston?

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

7.1
Sightseeing
3rd-best month of the year
7.1
Beach & pool
2nd-best month of the year

July is one of the better times to visit Williston for general sightseeing. The water and warmth also suit a beach or pool day.

What to pack for Williston in July

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

In July, Williston sees daytime highs around 80°F and nights near 58°F. Pack sun protection. Worth having: light clothes and rain gear. About 8 days see rain.

sun protectionlight clothesrain gear

UV index in Williston in July

LowModerateHighVery highExtreme

Clear-sky midday UV in July peaks around 8 — enough to warrant sun protection. The full-year curve, shaded by WHO exposure level, is below.

Under clear skies, the midday UV index in Williston peaks around June 21 at about 8 (very high) — sunscreen and a hat are worth it in the middle of the day. It bottoms out near December 20 at about 1 (low).

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

025710JanFebMarAprMayJunJulAugSepOctNovDecLowModerateHighVery highHighModerateLowJun 21UV 8Dec 20UV 1
UV index (midday)Level
Jan1Low
Feb2Low
Mar3Moderate
Apr4Moderate
May6High
Jun8Very high
Jul8Very high
Aug6High
Sep5Moderate
Oct3Moderate
Nov1Low
Dec1Low

Air quality in Williston in July

GoodModeratePoorUnhealthyVery unhealthy

Average fine-particle pollution (PM2.5) through the year — so you can see where July falls, not just the annual average.

Air quality in Williston is worst in August — around 16 µg/m³ PM2.5 (moderate), about 3.0× the cleanest month (October, 5 µg/m³).

Modeled monthly averages (CAMS reanalysis, 2015–2024).

01020JanFebMarAprMayJunJulAugSepOctNovDecGoodModerateGoodAug 1216 µg/m³Oct 226 µg/m³
PM2.5 (µg/m³)Level
Jan7Good
Feb8Good
Mar12Good
Apr11Good
May11Good
Jun9Good
Jul14Moderate
Aug16Moderate
Sep10Good
Oct5Good
Nov6Good
Dec7Good
Location & terrain

Where is Williston?

Williston sits at 48.1°N, 103.6°W, 1,877 ft above sea level, in United States. The nearest listed city is Dickinson, 96 mi away.

Topography around Williston

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

Within 2 miles, the terrain around Williston has only modest variations in elevation — a maximum elevation change of 243 ft around an average of 1,867 ft above sea level; within 10 miles, only modest variations in elevation — a maximum elevation change of 650 ft; within 50 miles, significant variations in elevation — a maximum elevation change of 912 ft.

The land around Williston is covered by grassland (42%) and artificial surfaces (28%) within 2 miles, grassland (61%) and cropland (25%) within 10 miles, and grassland (56%) and cropland (38%) within 50 miles.

2 miles
243 ft
10 miles
650 ft
50 miles
912 ft
treesgrasslandcroplandartificial surfacesbare terrainwater
July weather nearby: Dickinson 96 mi · Minot 107 mi · Mandan 157 mi · Bismarck 162 mi · Arcola East 163 mi · Dewdney East 165 mi · Regina 165 mi · Moose Jaw 178 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 Williston (48.147°, -103.618°, elevation 1,877 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. Monthly air-quality (PM2.5) seasonality is from the CAMS EAC4 reanalysis (Copernicus Atmosphere Monitoring Service), scaled to the WHO annual mean where available. Topography is sampled from the Copernicus DEM GLO-90 elevation model (© ESA/Airbus) and ESA WorldCover 2021 land cover (CC BY 4.0).