Great Falls weather in June

In June, Great Falls sees average daytime highs of 73°F and overnight lows near 50°F, with 2.9 in of precipitation across 10.5 wet days and about 15.7 hours of daylight. It is the 3rd-warmest and 1st-wettest month of the year here.

Highs climb over the month, from about 69°F in the first days to 78°F by the end. The sky is clear or mostly clear about 32% of the time in June, and the air most often feels dry.

Daylight stretches from about 15 h 30 min at the start of June to 15 h 42 min by month's end. Set against the rest of the year, June is Great Falls's 5th-clearest and 9th-windiest month. For the whole year in context, see Great Falls's year-round climate.

Daytime high: 73°; 3rd warmest
Overnight low: 50°; 10th coldest
Precipitation: 2.9 in; 10.5 wet days
Daylight: 15 h 42 min; 4:33 AM – 8:18 PM
Cloud cover: 57%; 5th clearest
Wind: 7 mph; 9th windiest
Solar energy: 6.92 kWh/m²
Travel score: 6.6; 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.

← May Great Falls year-round climate July →Best places to visit in June

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

Temperature in June

Average highAverage lowShaded bands: 10–90% of days

Highs climb over the month, from about 69°F in the first days to 78°F by the end.

A typical June day in Great Falls reaches about 73°F in the afternoon and slips back to 50°F overnight — a 23°F spread between the day's warmth and the night's chill. On most days the high lands between 60°F and 85°F. Set against its neighbours, June runs about 8°F warmer than May and about 11°F cooler than July.

	1	2	3	4	5	6	7	8	9	10	11	12	13	14	15	16	17	18	19	20	21	22	23	24	25	26	27	28	29	30
Avg high (°F)	69	69	69	69	70	70	70	70	70	71	71	71	71	71	72	72	73	73	73	74	74	75	75	76	76	77	78	78	78	79
Avg low (°F)	47	48	48	48	48	48	49	49	49	49	49	49	49	50	50	50	50	51	51	51	51	52	52	52	53	53	53	53	54	54

	Avg high (°F)	Avg low (°F)
1	69	47
2	69	48
3	69	48
4	69	48
5	70	48
6	70	48
7	70	49
8	70	49
9	70	49
10	71	49
11	71	49
12	71	49
13	71	49
14	71	50
15	72	50
16	72	50
17	73	50
18	73	51
19	73	51
20	74	51
21	74	51
22	75	52
23	75	52
24	76	52
25	76	53
26	77	53
27	78	53
28	78	53
29	78	54
30	79	54

How June really feels in Great Falls

Once humidity and wind are folded in, June 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

heat index over the day's high

Days feeling ≤ 32°F

wind chill below the day's low

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

Month	High / Low (°F)	Rainfall (inches)	Wet days	Snow days	Daylight (hours)	Travel score
Jan	33° / 18°	0.8	5.7	5.7	8.7	0.0
Feb	36° / 19°	0.7	5.8	5.9	9.9	0.0
Mar	45° / 26°	1.0	7	5.3	11.6	1.2
Apr	55° / 34°	2.0	9.4	4.2	13.3	3.5
May	65° / 43°	2.4	10.8	1.1	14.9	5.7
Jun	73° / 50°	2.9	10.5	0.1	15.7	6.6
Jul	84° / 56°	0.9	5.1	0	15.4	6.5
Aug	83° / 55°	1.1	4.8	0	14.1	7.0
Sep	71° / 47°	1.4	6.3	0.2	12.4	7.3
Oct	57° / 37°	1.3	7	2.5	10.6	4.3
Nov	43° / 27°	0.9	5.8	4.7	9.1	0.7
Dec	34° / 20°	0.8	5.7	5.6	8.3	0.0

Cloud cover in June

ClearMostly clearPartly cloudyMostly cloudyOvercast

The sky is clear or mostly clear about 32% of the time in June.

Beyond those clear spells, partly cloudy skies cover about 21% of June, with mostly cloudy or overcast conditions the remaining 47%. Skies tend to open up as the month goes on.

	1	2	3	4	5	6	7	8	9	10	11	12	13	14	15	16	17	18	19	20	21	22	23	24	25	26	27	28	29	30
Clearer (%)	46	45	46	46	46	46	45	46	46	46	48	49	49	50	50	51	52	53	55	56	57	58	59	60	61	62	63	63	64	65
Cloudier (%)	54	55	54	54	54	54	55	54	54	54	52	51	51	50	50	49	48	47	45	44	43	42	41	40	39	38	37	37	36	35

	Clearer (%)	Cloudier (%)
1	46	54
2	45	55
3	46	54
4	46	54
5	46	54
6	46	54
7	45	55
8	46	54
9	46	54
10	46	54
11	48	52
12	49	51
13	49	51
14	50	50
15	50	50
16	51	49
17	52	48
18	53	47
19	55	45
20	56	44
21	57	43
22	58	42
23	59	41
24	60	40
25	61	39
26	62	38
27	63	37
28	63	37
29	64	36
30	65	35

Chance of precipitation in June

Any precipitation

Great Falls gets around 2.9 in of rain and snow over 10.5 wet days in June, the wettest month. The line is the day-by-day chance of measurable precipitation.

Day to day, the chance of measurable precipitation averages around 35% and peaks near 41% on the wettest days, and about 0 day brings snow. The odds ease toward the end of the month.

	1	2	3	4	5	6	7	8	9	10	11	12	13	14	15	16	17	18	19	20	21	22	23	24	25	26	27	28	29	30
Rain chance (%)	40	40	40	40	40	40	40	40	41	41	40	40	40	39	38	37	35	34	33	32	31	30	29	29	28	27	27	26	26	25

	Rain chance (%)
1	40
2	40
3	40
4	40
5	40
6	40
7	40
8	40
9	41
10	41
11	40
12	40
13	40
14	39
15	38
16	37
17	35
18	34
19	33
20	32
21	31
22	30
23	29
24	29
25	28
26	27
27	27
28	26
29	26
30	25

Humidity in June

DryComfortableHumidMuggyOppressiveMiserable

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

By dew point, June lands in the dry band about 97% of days. It rarely turns muggy — the humid and sticky bands barely register.

	1	2	3	4	5	6	7	8	9	10	11	12	13	14	15	16	17	18	19	20	21	22	23	24	25	26	27	28	29	30
Dry (%)	99	99	99	99	98	98	98	98	98	97	97	97	97	97	97	97	97	97	97	97	97	97	97	97	96	96	96	96	96	96
Comfortable (%)	1	1	1	1	2	2	2	2	2	3	3	3	3	3	3	3	3	3	3	3	3	3	3	3	4	4	4	4	4	4

	Dry (%)	Comfortable (%)
1	99	1
2	99	1
3	99	1
4	99	1
5	98	2
6	98	2
7	98	2
8	98	2
9	98	2
10	97	3
11	97	3
12	97	3
13	97	3
14	97	3
15	97	3
16	97	3
17	97	3
18	97	3
19	97	3
20	97	3
21	97	3
22	97	3
23	97	3
24	97	3
25	96	4
26	96	4
27	96	4
28	96	4
29	96	4
30	96	4

Wind in June

Winds average 7 mph in June.

Across June, daily wind ranges from about 7 mph on the calmest days to 8 mph at its breeziest. It stays fairly steady from day to day.

	1	2	3	4	5	6	7	8	9	10	11	12	13	14	15	16	17	18	19	20	21	22	23	24	25	26	27	28	29	30
Wind speed (mph)	7	7	7	8	8	8	8	8	8	8	8	8	8	8	8	8	8	8	7	7	7	7	7	7	7	7	7	7	7	7
Feels	light breeze	light breeze	light breeze	light breeze	light breeze	light breeze	light breeze	light breeze	light breeze	light breeze	light breeze	light breeze	light breeze	light breeze	light breeze	light breeze	light breeze	light breeze	light breeze	calm	calm	calm	calm	calm	calm	calm	calm	calm	calm	calm

	Wind speed (mph)	Feels
1	7	light breeze
2	7	light breeze
3	7	light breeze
4	8	light breeze
5	8	light breeze
6	8	light breeze
7	8	light breeze
8	8	light breeze
9	8	light breeze
10	8	light breeze
11	8	light breeze
12	8	light breeze
13	8	light breeze
14	8	light breeze
15	8	light breeze
16	8	light breeze
17	8	light breeze
18	8	light breeze
19	7	light breeze
20	7	calm
21	7	calm
22	7	calm
23	7	calm
24	7	calm
25	7	calm
26	7	calm
27	7	calm
28	7	calm
29	7	calm
30	7	calm

Sunrise & sunset in June

DaylightNight

Daylight runs from about 15 h 30 min at the start of June to 15 h 42 min by month's end. The lit band spans sunrise to sunset each day.

Days grow by about 12 minutes over June. Sunrise moves from 4:39 AM to 4:37 AM, and sunset from 8:07 PM to 8:20 PM.

	1	2	3	4	5	6	7	8	9	10	11	12	13	14	15	16	17	18	19	20	21	22	23	24	25	26	27	28	29	30
Daylight (h)	15.5	15.5	15.5	15.5	15.6	15.6	15.6	15.6	15.6	15.7	15.7	15.7	15.7	15.7	15.7	15.7	15.7	15.8	15.8	15.8	15.8	15.8	15.8	15.8	15.8	15.8	15.8	15.7	15.7	15.7
Sunrise (AM)	4:39	4:38	4:38	4:37	4:37	4:36	4:36	4:35	4:35	4:34	4:34	4:34	4:34	4:34	4:33	4:33	4:33	4:33	4:33	4:33	4:34	4:34	4:34	4:34	4:35	4:35	4:35	4:36	4:36	4:37
Sunset (PM)	8:07	8:08	8:08	8:09	8:10	8:11	8:12	8:13	8:13	8:14	8:15	8:15	8:16	8:17	8:17	8:18	8:18	8:18	8:19	8:19	8:19	8:20	8:20	8:20	8:20	8:20	8:20	8:20	8:20	8:20

	Daylight (h)	Sunrise (AM)	Sunset (PM)
1	15.5	4:39	8:07
2	15.5	4:38	8:08
3	15.5	4:38	8:08
4	15.5	4:37	8:09
5	15.6	4:37	8:10
6	15.6	4:36	8:11
7	15.6	4:36	8:12
8	15.6	4:35	8:13
9	15.6	4:35	8:13
10	15.7	4:34	8:14
11	15.7	4:34	8:15
12	15.7	4:34	8:15
13	15.7	4:34	8:16
14	15.7	4:34	8:17
15	15.7	4:33	8:17
16	15.7	4:33	8:18
17	15.7	4:33	8:18
18	15.8	4:33	8:18
19	15.8	4:33	8:19
20	15.8	4:33	8:19
21	15.8	4:34	8:19
22	15.8	4:34	8:20
23	15.8	4:34	8:20
24	15.8	4:34	8:20
25	15.8	4:35	8:20
26	15.8	4:35	8:20
27	15.8	4:35	8:20
28	15.7	4:36	8:20
29	15.7	4:36	8:20
30	15.7	4:37	8:20

Solar energy in June

Daily solar energy (kWh/m²)

Average shortwave solar energy reaching the ground each day in June, about 6.92 kWh/m².

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 — June's 6.92 kWh/m² sits near the top of that range.

	1	2	3	4	5	6	7	8	9	10	11	12	13	14	15	16	17	18	19	20	21	22	23	24	25	26	27	28	29	30
Solar energy (kWh/m²)	6.5	6.5	6.5	6.6	6.6	6.6	6.6	6.7	6.7	6.7	6.7	6.8	6.8	6.8	6.9	6.9	7.0	7.0	7.0	7.1	7.1	7.1	7.2	7.2	7.2	7.2	7.3	7.3	7.3	7.3
Level	Intense	Intense	Intense	Intense	Intense	Intense	Intense	Intense	Intense	Intense	Intense	Intense	Intense	Intense	Intense	Intense	Intense	Intense	Intense	Intense	Intense	Intense	Intense	Intense	Intense	Intense	Intense	Intense	Intense	Intense

	Solar energy (kWh/m²)	Level
1	6.5	Intense
2	6.5	Intense
3	6.5	Intense
4	6.6	Intense
5	6.6	Intense
6	6.6	Intense
7	6.6	Intense
8	6.7	Intense
9	6.7	Intense
10	6.7	Intense
11	6.7	Intense
12	6.8	Intense
13	6.8	Intense
14	6.8	Intense
15	6.9	Intense
16	6.9	Intense
17	7.0	Intense
18	7.0	Intense
19	7.0	Intense
20	7.1	Intense
21	7.1	Intense
22	7.1	Intense
23	7.2	Intense
24	7.2	Intense
25	7.2	Intense
26	7.2	Intense
27	7.3	Intense
28	7.3	Intense
29	7.3	Intense
30	7.3	Intense

Planning a trip in June

Is June a good time to visit Great Falls?

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

6.6

Sightseeing

3rd-best month of the year

5.0

Beach & pool

3rd-best month of the year

June is a reasonable time to visit Great Falls for sightseeing.

What to pack for Great Falls in June

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

In June, Great Falls sees daytime highs around 73°F and nights near 50°F. Pack sun protection. Worth having: light clothes and rain gear. About 11 days see rain.

sun protectionlight clothesrain gear

UV index in Great Falls in June

LowModerateHighVery highExtreme

Clear-sky midday UV in June peaks around 7 — enough to warrant sun protection. 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.

	Jan	Feb	Mar	Apr	May	Jun	Jul	Aug	Sep	Oct	Nov	Dec
UV index (midday)	1	2	3	4	7	7	8	6	5	4	1	1
Level	Low	Low	Moderate	Moderate	High	Very high	Very high	High	Moderate	Moderate	Low	Low

	UV index (midday)	Level
Jan	1	Low
Feb	2	Low
Mar	3	Moderate
Apr	4	Moderate
May	7	High
Jun	7	Very high
Jul	8	Very high
Aug	6	High
Sep	5	Moderate
Oct	4	Moderate
Nov	1	Low
Dec	1	Low

Air quality in Great Falls in June

GoodModeratePoorUnhealthyVery unhealthy

Average fine-particle pollution (PM2.5) through the year — so you can see where June 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).

	Jan	Feb	Mar	Apr	May	Jun	Jul	Aug	Sep	Oct	Nov	Dec
PM2.5 (µg/m³)	9	6	11	13	12	9	20	23	16	8	6	6
Level	Good	Good	Good	Moderate	Good	Good	Moderate	Moderate	Moderate	Good	Good	Good

	PM2.5 (µg/m³)	Level
Jan	9	Good
Feb	6	Good
Mar	11	Good
Apr	13	Moderate
May	12	Good
Jun	9	Good
Jul	20	Moderate
Aug	23	Moderate
Sep	16	Moderate
Oct	8	Good
Nov	6	Good
Dec	6	Good

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

artificial surfaces 52%

10 miles

1,270 ft

grassland 51%

50 miles

6,588 ft

grassland 55%

treesgrasslandcroplandartificial surfacesbare terrainwater

← May Great Falls year-round climate July →Best places to visit in June

June 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

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).

	Avg high (°F)	Avg low (°F)
1	69	47
2	69	48
3	69	48
4	69	48
5	70	48
6	70	48
7	70	49
8	70	49
9	70	49
10	71	49
11	71	49
12	71	49
13	71	49
14	71	50
15	72	50
16	72	50
17	73	50
18	73	51
19	73	51
20	74	51
21	74	51
22	75	52
23	75	52
24	76	52
25	76	53
26	77	53
27	78	53
28	78	53
29	78	54
30	79	54

	Clearer (%)	Cloudier (%)
1	46	54
2	45	55
3	46	54
4	46	54
5	46	54
6	46	54
7	45	55
8	46	54
9	46	54
10	46	54
11	48	52
12	49	51
13	49	51
14	50	50
15	50	50
16	51	49
17	52	48
18	53	47
19	55	45
20	56	44
21	57	43
22	58	42
23	59	41
24	60	40
25	61	39
26	62	38
27	63	37
28	63	37
29	64	36
30	65	35

	Rain chance (%)
1	40
2	40
3	40
4	40
5	40
6	40
7	40
8	40
9	41
10	41
11	40
12	40
13	40
14	39
15	38
16	37
17	35
18	34
19	33
20	32
21	31
22	30
23	29
24	29
25	28
26	27
27	27
28	26
29	26
30	25

	Dry (%)	Comfortable (%)
1	99	1
2	99	1
3	99	1
4	99	1
5	98	2
6	98	2
7	98	2
8	98	2
9	98	2
10	97	3
11	97	3
12	97	3
13	97	3
14	97	3
15	97	3
16	97	3
17	97	3
18	97	3
19	97	3
20	97	3
21	97	3
22	97	3
23	97	3
24	97	3
25	96	4
26	96	4
27	96	4
28	96	4
29	96	4
30	96	4

	Avg high (°F)	Avg low (°F)
1	69	47
2	69	48
3	69	48
4	69	48
5	70	48
6	70	48
7	70	49
8	70	49
9	70	49
10	71	49
11	71	49
12	71	49
13	71	49
14	71	50
15	72	50
16	72	50
17	73	50
18	73	51
19	73	51
20	74	51
21	74	51
22	75	52
23	75	52
24	76	52
25	76	53
26	77	53
27	78	53
28	78	53
29	78	54
30	79	54

	Clearer (%)	Cloudier (%)
1	46	54
2	45	55
3	46	54
4	46	54
5	46	54
6	46	54
7	45	55
8	46	54
9	46	54
10	46	54
11	48	52
12	49	51
13	49	51
14	50	50
15	50	50
16	51	49
17	52	48
18	53	47
19	55	45
20	56	44
21	57	43
22	58	42
23	59	41
24	60	40
25	61	39
26	62	38
27	63	37
28	63	37
29	64	36
30	65	35

	Rain chance (%)
1	40
2	40
3	40
4	40
5	40
6	40
7	40
8	40
9	41
10	41
11	40
12	40
13	40
14	39
15	38
16	37
17	35
18	34
19	33
20	32
21	31
22	30
23	29
24	29
25	28
26	27
27	27
28	26
29	26
30	25

	Dry (%)	Comfortable (%)
1	99	1
2	99	1
3	99	1
4	99	1
5	98	2
6	98	2
7	98	2
8	98	2
9	98	2
10	97	3
11	97	3
12	97	3
13	97	3
14	97	3
15	97	3
16	97	3
17	97	3
18	97	3
19	97	3
20	97	3
21	97	3
22	97	3
23	97	3
24	97	3
25	96	4
26	96	4
27	96	4
28	96	4
29	96	4
30	96	4

	Avg high (°F)	Avg low (°F)
1	69	47
2	69	48
3	69	48
4	69	48
5	70	48
6	70	48
7	70	49
8	70	49
9	70	49
10	71	49
11	71	49
12	71	49
13	71	49
14	71	50
15	72	50
16	72	50
17	73	50
18	73	51
19	73	51
20	74	51
21	74	51
22	75	52
23	75	52
24	76	52
25	76	53
26	77	53
27	78	53
28	78	53
29	78	54
30	79	54

	Clearer (%)	Cloudier (%)
1	46	54
2	45	55
3	46	54
4	46	54
5	46	54
6	46	54
7	45	55
8	46	54
9	46	54
10	46	54
11	48	52
12	49	51
13	49	51
14	50	50
15	50	50
16	51	49
17	52	48
18	53	47
19	55	45
20	56	44
21	57	43
22	58	42
23	59	41
24	60	40
25	61	39
26	62	38
27	63	37
28	63	37
29	64	36
30	65	35

	Rain chance (%)
1	40
2	40
3	40
4	40
5	40
6	40
7	40
8	40
9	41
10	41
11	40
12	40
13	40
14	39
15	38
16	37
17	35
18	34
19	33
20	32
21	31
22	30
23	29
24	29
25	28
26	27
27	27
28	26
29	26
30	25

	Dry (%)	Comfortable (%)
1	99	1
2	99	1
3	99	1
4	99	1
5	98	2
6	98	2
7	98	2
8	98	2
9	98	2
10	97	3
11	97	3
12	97	3
13	97	3
14	97	3
15	97	3
16	97	3
17	97	3
18	97	3
19	97	3
20	97	3
21	97	3
22	97	3
23	97	3
24	97	3
25	96	4
26	96	4
27	96	4
28	96	4
29	96	4
30	96	4