Great Falls weather in July

In July, Great Falls sees average daytime highs of 84°F and overnight lows near 56°F, with 0.9 in of rain across 5.1 wet days and about 15.4 hours of daylight. It is the 1st-warmest and 8th-wettest month of the year here.

Highs climb over the month, from about 80°F in the first days to 86°F by the end. The sky is clear or mostly clear about 56% of the time in July, and the air most often feels dry.

Daylight stretches from about 15 h 42 min at the start of July to 14 h 54 min by month's end. Set against the rest of the year, July is Great Falls's 1st-clearest and 11th-windiest month. For the whole year in context, see Great Falls's year-round climate.

Daytime high
84°
1st warmest
Overnight low
56°
12th coldest
Rainfall
0.9 in
5.1 wet days
Daylight
15 h 24 min
4:49 AM – 8:13 PM
Cloud cover
38%
1st clearest
Wind
6 mph
11th windiest
Solar energy
7.32 kWh/m²
Travel score
6.5
out of 10

Great Falls is city in and county seat of Cascade County, Montana, United States.

Density
985/km²
people per km²
Founded
1883

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 80°F in the first days to 86°F by the end.

A typical July day in Great Falls reaches about 84°F in the afternoon and slips back to 56°F overnight — a 27°F spread between the day's warmth and the night's chill. On most days the high lands between 72°F and 94°F. Set against its neighbours, July runs about 11°F warmer than June and on par with August.

40°60°80°100°151015202531
Avg high (°F)Avg low (°F)
17954
28054
38055
48155
58155
68155
78255
88256
98256
108356
118356
128356
138456
148456
158457
168457
178557
188557
198557
208557
218557
228557
238657
248658
258658
268658
278658
288658
298658
308658
318558

How July really feels in Great 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.

Great Falls weather by month

How July compares with the rest of the year at a glance. July is the 1st-warmest and 8th-wettest month here — the current month is highlighted below.

MonthHigh / Low (°F)Rainfall (inches)Wet daysSnow daysDaylight (hours)Travel score
Jan33° / 18°0.85.75.78.70.0
Feb36° / 19°0.75.85.99.90.0
Mar45° / 26°1.075.311.61.2
Apr55° / 34°2.09.44.213.33.5
May65° / 43°2.410.81.114.95.7
Jun73° / 50°2.910.50.115.76.6
Jul84° / 56°0.95.1015.46.5
Aug83° / 55°1.14.8014.17.0
Sep71° / 47°1.46.30.212.47.3
Oct57° / 37°1.372.510.64.3
Nov43° / 27°0.95.84.79.10.7
Dec34° / 20°0.85.75.68.30.0

Cloud cover in July

ClearMostly clearPartly cloudyMostly cloudyOvercast

The sky is clear or mostly clear about 56% of the time in July, the clearest month of the year.

Beyond those clear spells, partly cloudy skies cover about 19% of July, with mostly cloudy or overcast conditions the remaining 24%. Skies tend to open up as the month goes on.

0%25%50%75%100%151015202531
Clearer (%)Cloudier (%)
16634
26634
36832
46832
56931
67030
77129
87129
97228
107327
117426
127426
137624
147624
157723
167822
177921
187921
197921
208020
218020
228020
238119
248119
258119
268119
278119
288020
298020
308020
318020

Chance of precipitation in July

Any precipitation

Great Falls gets around 0.9 in of rain over 5.1 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 17% and peaks near 25% on the wettest days. The odds ease toward the end of the month.

0%10%20%30%40%151015202531
Rain chance (%)
125
225
324
424
523
623
722
821
921
1020
1119
1218
1317
1416
1516
1615
1714
1814
1913
2013
2113
2213
2312
2412
2512
2612
2712
2812
2912
3012
3113

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 97% of days. It rarely turns muggy — the humid and sticky bands barely register.

0%25%50%75%100%151015202531
Dry (%)Comfortable (%)
1955
2955
3955
4955
5955
6955
7955
8955
9964
10964
11964
12964
13964
14964
15973
16973
17973
18973
19973
20973
21973
22982
23982
24982
25982
26982
27982
28982
29982
30982
31982

Wind in July

Winds average 6 mph in July.

Across July, daily wind ranges from about 6 mph on the calmest days to 7 mph at its breeziest. It stays fairly steady from day to day.

0246810151015202531
Wind speed (mph)Feels
17calm
27calm
37calm
47calm
57calm
67calm
77calm
87calm
97calm
107calm
117calm
127calm
137calm
147calm
157calm
166calm
176calm
186calm
196calm
206calm
216calm
226calm
236calm
246calm
256calm
266calm
276calm
286calm
296calm
306calm
316calm

Sunrise & sunset in July

DaylightNight

Daylight runs from about 15 h 42 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 48 minutes over July. Sunrise moves from 4:37 AM to 5:06 AM, and sunset from 8:20 PM to 7:57 PM.

12 AM4 AM8 AM12 PM4 PM8 PM12 AM151015202531
Daylight (h)Sunrise (AM)Sunset (PM)
115.74:378:20
215.74:388:20
315.74:388:20
415.74:398:19
515.74:398:19
615.64:408:19
715.64:418:18
815.64:428:18
915.64:428:17
1015.64:438:17
1115.54:448:16
1215.54:458:16
1315.54:468:15
1415.54:478:14
1515.44:488:14
1615.44:498:13
1715.44:508:12
1815.34:518:11
1915.34:528:10
2015.34:538:09
2115.24:548:08
2215.24:558:07
2315.24:568:06
2415.14:578:05
2515.14:588:04
2615.15:008:03
2715.05:018:02
2815.05:028:01
2914.95:037:59
3014.95:057:58
3114.95:067:57

Solar energy in July

Daily solar energy (kWh/m²)

Average shortwave solar energy reaching the ground each day in July, about 7.32 kWh/m² — the sunniest month for solar.

For context, solar energy here swings from a low near 1.39 kWh/m² to a high of 7.32 kWh/m² in July across the year — July's 7.32 kWh/m² sits near the top of that range.

02468151015202531
Solar energy (kWh/m²)Level
17.3Intense
27.3Intense
37.3Intense
47.3Intense
57.3Intense
67.4Intense
77.4Intense
87.4Intense
97.4Intense
107.4Intense
117.4Intense
127.4Intense
137.4Intense
147.4Intense
157.4Intense
167.4Intense
177.3Intense
187.3Intense
197.3Intense
207.3Intense
217.3Intense
227.3Intense
237.3Intense
247.2Intense
257.2Intense
267.2Intense
277.1Intense
287.1Intense
297.1Intense
307.0Intense
317.0Intense
Planning a trip in July

Is July a good time to visit Great Falls?

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

6.5
Sightseeing
4th-best month of the year
7.9
Beach & pool
1st-best month of the year

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

What to pack for Great Falls in July

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

In July, Great Falls sees daytime highs around 84°F and nights near 56°F. Pack light clothes and sun protection. About 5 days see rain.

light clothessun protection

UV index in Great Falls in July

LowModerateHighVery highExtreme

Clear-sky midday UV in July peaks around 8 (very high — sun protection essential). The full-year curve, shaded by WHO exposure level, is below.

Under clear skies, the midday UV index in Great Falls peaks around July 14 at about 8 (very high) — sunscreen, a hat and midday shade are essential. It bottoms out near December 17 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 highHighModerateLowJul 14UV 8Dec 17UV 1
UV index (midday)Level
Jan1Low
Feb2Low
Mar3Moderate
Apr4Moderate
May7High
Jun7Very high
Jul8Very high
Aug6High
Sep5Moderate
Oct4Moderate
Nov1Low
Dec1Low

Air quality in Great Falls 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 Great Falls is worst in August — around 23 µg/m³ PM2.5 (moderate), about 3.8× the cleanest month (December, 6 µg/m³).

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

0102030JanFebMarAprMayJunJulAugSepOctNovDecGoodModerateGoodModerateGoodAug 1323 µg/m³Dec 106 µg/m³
PM2.5 (µg/m³)Level
Jan9Good
Feb6Good
Mar11Good
Apr13Moderate
May12Good
Jun9Good
Jul20Moderate
Aug23Moderate
Sep16Moderate
Oct8Good
Nov6Good
Dec6Good
Location & terrain

Where is Great Falls?

Great Falls sits at 47.5°N, 111.3°W, 3,330 ft above sea level, in United States. The nearest listed city is Helena, 71 mi away.

Topography around Great Falls

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

Within 2 miles, the terrain around Great Falls has only modest variations in elevation — a maximum elevation change of 217 ft around an average of 3,366 ft above sea level; within 10 miles, significant variations in elevation — a maximum elevation change of 1,270 ft; within 50 miles, very significant variations in elevation — a maximum elevation change of 6,588 ft.

The land around Great Falls is covered by artificial surfaces (52%) and grassland (22%) within 2 miles, grassland (51%) and cropland (38%) within 10 miles, and grassland (55%) and cropland (31%) within 50 miles.

2 miles
217 ft
10 miles
1,270 ft
50 miles
6,588 ft
treesgrasslandcroplandartificial surfacesbare terrainwater
July weather nearby: Helena 71 mi · Butte 119 mi · Bozeman 126 mi · Missoula 134 mi · Kalispell 148 mi · Whitefish 154 mi · Lethbridge 167 mi · Medicine Hat 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 Great Falls (47.5002°, -111.3008°, elevation 3,330 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).