Rolla weather in July

In July, Rolla sees average daytime highs of 88°F and overnight lows near 69°F, with 3.5 in of rain across 10.7 wet days and about 14.4 hours of daylight. It is the 1st-warmest and 5th-wettest month of the year here.

Day-to-day highs hold fairly steady near 88°F through the month. The sky is clear or mostly clear about 38% of the time in July, and the air most often feels muggy.

Daylight stretches from about 14 h 36 min at the start of July to 14 hours by month's end. Set against the rest of the year, July is Rolla's 4th-clearest and 11th-windiest month. For the whole year in context, see Rolla's year-round climate.

Daytime high
88°
1st warmest
Overnight low
69°
12th coldest
Rainfall
3.5 in
10.7 wet days
Daylight
14 h 24 min
5:01 AM – 7:24 PM
Cloud cover
53%
4th clearest
Wind
5 mph
11th windiest
Solar energy
6.35 kWh/m²
Travel score
4.5
out of 10

Rolla is city in and county seat of Phelps County, Missouri, United States.

Density
641/km²
people per km²
Founded
1844

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 88°F through the month.

A typical July day in Rolla reaches about 88°F in the afternoon and slips back to 69°F overnight — a 19°F spread between the day's warmth and the night's chill. On most days the high lands between 80°F and 96°F. Set against its neighbours, July runs about 5°F warmer than June and about 2°F warmer than August.

60°70°80°90°100°151015202531
Avg high (°F)Avg low (°F)
18768
28769
38769
48769
58769
68769
78869
88869
98869
108869
118870
128870
138870
148870
158970
168970
178970
188970
198970
208970
218870
228870
238869
248869
258869
268869
278869
288869
298869
308869
318769

How July really feels in Rolla

Once humidity and wind are folded in, July averages 26 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
26
heat index over the day's high
Days feeling ≤ 32°F
0
wind chill below the day's low

The story in July is heat — humidity pushes the afternoon "feels like" well above the raw temperature.

Rolla 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
Jan42° / 25°2.77.63.19.70.1
Feb46° / 28°2.57.62.610.51.4
Mar56° / 37°3.610.81.611.73.8
Apr67° / 47°4.811.80.2135.8
May74° / 56°5.013.30146.3
Jun83° / 65°3.811.3014.65.5
Jul88° / 69°3.510.7014.44.5
Aug86° / 67°2.99.5013.55.0
Sep79° / 59°3.37.9012.37.0
Oct68° / 47°3.38.70.1116.6
Nov55° / 37°3.48.20.99.93.7
Dec45° / 29°2.67.72.19.40.9

Cloud cover in July

ClearMostly clearPartly cloudyMostly cloudyOvercast

The sky is clear or mostly clear about 38% of the time in July.

Beyond those clear spells, partly cloudy skies cover about 20% of July, with mostly cloudy or overcast conditions the remaining 41%.

0%25%50%75%100%151015202531
Clearer (%)Cloudier (%)
15941
25941
35941
45941
55941
65941
75941
85941
95941
105941
115941
125941
135941
146040
156040
165941
175941
185941
195941
205941
215941
225941
235842
245842
255842
265842
275842
285842
295743
305743
315743

Chance of precipitation in July

Any precipitation

Rolla gets around 3.5 in of rain over 10.7 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 34% and peaks near 36% on the wettest days.

0%10%20%30%40%50%151015202531
Rain chance (%)
136
236
336
435
535
635
734
833
933
1032
1132
1232
1331
1431
1531
1632
1732
1832
1932
2033
2133
2234
2334
2435
2535
2635
2735
2835
2935
3035
3135

Humidity in July

DryComfortableHumidMuggyOppressiveMiserable

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

By dew point, July lands in the muggy band about 36% of days. Sticky, muggy-or-worse air turns up on roughly 68% of them.

0%25%50%75%100%151015202531
Dry (%)Comfortable (%)Humid (%)Muggy (%)Oppressive (%)Miserable (%)
17121840230
27121840240
36121839250
46121739260
56121739270
65111739270
75111738280
85101739290
94101739290
10491739300
11491739310
12491738311
13381738321
14381638331
15391637341
16391636341
17391635351
183101634351
193101634352
203111633352
213111733352
223121732352
233121732342
243121832332
253131832332
262131932322
272141932312
282142032302
293142033292
303142034282
313142035271

Wind in July

Winds average 5 mph in July.

Across July, daily wind ranges from about 5 mph on the calmest days to 6 mph at its breeziest. It stays fairly steady from day to day.

0246810151015202531
Wind speed (mph)Feels
16calm
26calm
36calm
46calm
56calm
66calm
76calm
86calm
96calm
106calm
116calm
125calm
135calm
145calm
155calm
165calm
175calm
185calm
195calm
205calm
215calm
225calm
235calm
245calm
255calm
265calm
275calm
285calm
295calm
305calm
315calm

Sunrise & sunset in July

DaylightNight

Daylight runs from about 14 h 36 min at the start of July to 14 hours by month's end. The lit band spans sunrise to sunset each day.

Days shrink by about 36 minutes over July. Sunrise moves from 4:52 AM to 5:13 AM, and sunset from 7:28 PM to 7:14 PM.

12 AM4 AM8 AM12 PM4 PM8 PM12 AM151015202531
Daylight (h)Sunrise (AM)Sunset (PM)
114.64:527:28
214.64:537:28
314.64:537:28
414.64:547:28
514.64:547:28
614.64:557:28
714.54:557:28
814.54:567:27
914.54:567:27
1014.54:577:27
1114.54:587:27
1214.54:587:26
1314.44:597:26
1414.45:007:25
1514.45:007:25
1614.45:017:24
1714.45:027:24
1814.45:027:23
1914.35:037:23
2014.35:047:22
2114.35:057:22
2214.35:057:21
2314.25:067:20
2414.25:077:19
2514.25:087:19
2614.25:097:18
2714.15:097:17
2814.15:107:16
2914.15:117:15
3014.05:127:15
3114.05:137:14

Solar energy in July

Daily solar energy (kWh/m²)

Average shortwave solar energy reaching the ground each day in July, about 6.35 kWh/m².

For context, solar energy here swings from a low near 2.01 kWh/m² to a high of 6.41 kWh/m² in June across the year — July's 6.35 kWh/m² sits near the top of that range.

0246151015202531
Solar energy (kWh/m²)Level
16.5Intense
26.5Intense
36.5Intense
46.5Intense
56.5Intense
66.5Intense
76.5Intense
86.5Intense
96.5Intense
106.5Intense
116.5Intense
126.5Intense
136.5Intense
146.4Intense
156.4Intense
166.4Intense
176.4Intense
186.4Intense
196.4Intense
206.3Intense
216.3Intense
226.3Intense
236.3Intense
246.3Intense
256.2Intense
266.2Intense
276.2Intense
286.2Intense
296.1Intense
306.1Intense
316.1Intense
Planning a trip in July

Is July a good time to visit Rolla?

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

4.5
Sightseeing
7th-best month of the year
6.7
Beach & pool
3rd-best month of the year

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

What to pack for Rolla in July

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

In July, Rolla sees daytime highs around 88°F and nights near 69°F. Pack light clothes and sun protection. Worth having: rain gear. About 11 days see rain.

light clothessun protectionrain gear

UV index in Rolla in July

LowModerateHighVery highExtreme

Clear-sky midday UV in July peaks around 10 (very high — sun protection essential). The full-year curve, shaded by WHO exposure level, is below.

Under clear skies, the midday UV index in Rolla peaks around June 22 at about 10 (very high) — sunscreen, a hat and midday shade are essential. It bottoms out near December 23 at about 2 (moderate).

The index reaches 3 or more — the level where the WHO recommends sun protection — in 10 months of the year.

025710JanFebMarAprMayJunJulAugSepOctNovDecModerateHighVery highHighModerateJun 22UV 10Dec 23UV 2
UV index (midday)Level
Jan2Moderate
Feb4Moderate
Mar5High
Apr7Very high
May8Very high
Jun10Very high
Jul10Very high
Aug9Very high
Sep7High
Oct4Moderate
Nov4Moderate
Dec2Moderate

Air quality in Rolla 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 Rolla is worst in July — around 16 µg/m³ PM2.5 (moderate), about 2.8× the cleanest month (November, 6 µg/m³).

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

01020JanFebMarAprMayJunJulAugSepOctNovDecGoodModerateGoodJul 1516 µg/m³Nov 146 µg/m³
PM2.5 (µg/m³)Level
Jan7Good
Feb10Good
Mar11Good
Apr9Good
May12Moderate
Jun14Moderate
Jul16Moderate
Aug13Moderate
Sep11Good
Oct6Good
Nov6Good
Dec7Good
Location & terrain

Where is Rolla?

Rolla sits at 38.0°N, 91.8°W, 1,122 ft above sea level, in United States. The nearest listed city is Fort Leonard Wood, 27 mi away.

Topography around Rolla

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

Within 2 miles, the terrain around Rolla has only modest variations in elevation — a maximum elevation change of 308 ft around an average of 1,073 ft above sea level; within 10 miles, only modest variations in elevation — a maximum elevation change of 633 ft; within 50 miles, significant variations in elevation — a maximum elevation change of 1,060 ft.

The land around Rolla is covered by trees (55%) and artificial surfaces (24%) within 2 miles, trees (66%) and grassland (30%) within 10 miles, and trees (73%) and grassland (23%) within 50 miles.

2 miles
308 ft
10 miles
633 ft
50 miles
1,060 ft
treesgrasslandcroplandartificial surfacesbare terrain
July weather nearby: Fort Leonard Wood 27 mi · Jefferson City 48 mi · Wildwood 75 mi · Farmington 75 mi · Columbia 76 mi · Wentzville 78 mi · Ballwin 80 mi · Chesterfield 81 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 Rolla (37.9514°, -91.7713°, elevation 1,122 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).