Helena weather in June

In June, Helena sees average daytime highs of 67°F and overnight lows near 44°F, with 3.8 in of precipitation across 13.5 wet days and about 15.6 hours of daylight. It is the 3rd-warmest and 1st-wettest month of the year here.

Highs climb over the month, from about 64°F in the first days to 73°F by the end. The sky is clear or mostly clear about 28% of the time in June, and the air most often feels dry.

Daylight stretches from about 15 h 18 min at the start of June to 15 h 36 min by month's end. Set against the rest of the year, June is Helena's 5th-clearest and 9th-windiest month. For the whole year in context, see Helena's year-round climate.

Daytime high
67°
3rd warmest
Overnight low
44°
10th coldest
Precipitation
3.8 in
13.5 wet days
Daylight
15 h 36 min
4:40 AM – 8:17 PM
Cloud cover
59%
5th clearest
Wind
5 mph
9th windiest
Solar energy
6.96 kWh/m²
Travel score
5.7
out of 10

Helena is capital city of the U.S. state of Montana and seat of Lewis and Clark County.

Density
749/km²
people per km²
Founded
1864

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

Temperature in June

Average highAverage lowShaded bands: 10–90% of days

Highs climb over the month, from about 64°F in the first days to 73°F by the end.

A typical June day in Helena reaches about 67°F in the afternoon and slips back to 44°F overnight — a 24°F spread between the day's warmth and the night's chill. On most days the high lands between 55°F and 79°F. Set against its neighbours, June runs about 9°F warmer than May and about 11°F cooler than July.

40°60°80°151015202530
Avg high (°F)Avg low (°F)
16341
26441
36442
46442
56442
66442
76442
86542
96542
106542
116543
126543
136643
146643
156743
166744
176744
186844
196844
206945
216945
227045
237045
247146
257146
267246
277247
287347
297347
307447

How June really feels in Helena

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
0
heat index over the day's high
Days feeling ≤ 32°F
0
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.

Helena 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.

MonthHigh / Low (°F)Rainfall (inches)Wet daysSnow daysDaylight (hours)Travel score
Jan28° / 12°0.977.68.80.0
Feb31° / 13°0.977.6100.0
Mar39° / 20°1.49.77.711.60.1
Apr48° / 28°2.411.97.213.31.7
May59° / 37°3.213.82.714.84.0
Jun67° / 44°3.813.50.615.65.7
Jul78° / 50°1.78.8015.27.2
Aug78° / 49°1.57.50.1147.4
Sep67° / 42°1.66.80.912.46.7
Oct52° / 32°1.58.33.810.72.9
Nov37° / 21°1.27.76.29.20.1
Dec27° / 12°1.17.37.88.40.0

Cloud cover in June

ClearMostly clearPartly cloudyMostly cloudyOvercast

The sky is clear or mostly clear about 28% of the time in June.

Beyond those clear spells, partly cloudy skies cover about 22% of June, with mostly cloudy or overcast conditions the remaining 50%. Skies tend to open up as the month goes on.

0%25%50%75%100%151015202530
Clearer (%)Cloudier (%)
13763
23862
33862
43961
54060
64060
74159
84159
94258
104357
114357
124555
134555
144753
154753
164951
175050
185248
195347
205446
215644
225743
235743
245941
256040
266139
276337
286337
296535
306535

Chance of precipitation in June

Any precipitationSnow

Helena gets around 3.8 in of rain and snow over 13.5 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 45% and peaks near 50% on the wettest days, and about 1 day brings snow. The odds ease toward the end of the month.

0%20%40%60%151015202530
Rain chance (%)Snow chance (%)
1495
2495
3495
4495
5495
6495
7494
8504
9504
10504
11504
12503
13503
14493
15483
16472
17462
18451
19441
20431
21420
22410
23410
24400
25390
26390
27380
28380
29380
30380

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 100% of days. It rarely turns muggy — the humid and sticky bands barely register.

0%25%50%75%100%151015202530
Dry (%)Comfortable (%)
11000
21000
31000
41000
51000
61000
71000
81000
91000
101000
111000
121000
131000
141000
151000
161000
171000
181000
191000
201000
211000
221000
231000
241000
251000
261000
271000
281000
29991
30991

Wind in June

Winds average 5 mph in June.

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

0246810151015202530
Wind speed (mph)Feels
15calm
25calm
35calm
45calm
55calm
65calm
75calm
85calm
95calm
105calm
115calm
125calm
135calm
145calm
155calm
165calm
175calm
185calm
195calm
205calm
215calm
225calm
235calm
245calm
255calm
265calm
275calm
285calm
295calm
305calm

Sunrise & sunset in June

DaylightNight

Daylight runs from about 15 h 18 min at the start of June to 15 h 36 min by month's end. The lit band spans sunrise to sunset each day.

Days grow by about 18 minutes over June. Sunrise moves from 4:45 AM to 4:43 AM, and sunset from 8:06 PM to 8:19 PM.

12 AM4 AM8 AM12 PM4 PM8 PM12 AM151015202530
Daylight (h)Sunrise (AM)Sunset (PM)
115.34:458:06
215.44:458:07
315.44:448:08
415.44:448:09
515.44:438:10
615.54:438:10
715.54:428:11
815.54:428:12
915.54:418:13
1015.54:418:13
1115.64:418:14
1215.64:418:15
1315.64:408:15
1415.64:408:16
1515.64:408:16
1615.64:408:17
1715.64:408:17
1815.64:408:18
1915.64:408:18
2015.64:408:18
2115.64:408:19
2215.64:418:19
2315.64:418:19
2415.64:418:19
2515.64:418:19
2615.64:428:19
2715.64:428:19
2815.64:428:19
2915.64:438:19
3015.64:438:19

Solar energy in June

Daily solar energy (kWh/m²)

Average shortwave solar energy reaching the ground each day in June, about 6.96 kWh/m².

For context, solar energy here swings from a low near 1.55 kWh/m² to a high of 7.45 kWh/m² in July across the year — June's 6.96 kWh/m² sits near the top of that range.

02468151015202530
Solar energy (kWh/m²)Level
16.5Intense
26.6Intense
36.6Intense
46.6Intense
56.6Intense
66.7Intense
76.7Intense
86.7Intense
96.7Intense
106.8Intense
116.8Intense
126.8Intense
136.8Intense
146.9Intense
156.9Intense
167.0Intense
177.0Intense
187.0Intense
197.1Intense
207.1Intense
217.2Intense
227.2Intense
237.2Intense
247.3Intense
257.3Intense
267.3Intense
277.3Intense
287.4Intense
297.4Intense
307.4Intense
Planning a trip in June

Hazard calendar for Helena

In seasonPeak

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

Helena's rainy season runs April–June, when most of the year's rain falls.

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

Is June a good time to visit Helena?

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

5.7
Sightseeing
4th-best month of the year
3.0
Beach & pool
4th-best month of the year

June is a reasonable time to visit Helena for sightseeing.

What to pack for Helena in June

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

In June, Helena sees daytime highs around 67°F and nights near 44°F. Pack rain gear and sun protection. Worth having: a warm layer. About 14 days see rain.

rain gearsun protectiona warm layer

UV index in Helena in June

LowModerateHighVery highExtreme

Clear-sky midday UV in June 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 Helena peaks around July 15 at about 9 (very high) — sunscreen, a hat and midday shade are essential. It bottoms out near December 21 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 15UV 9Dec 21UV 1
UV index (midday)Level
Jan1Low
Feb2Low
Mar5Moderate
Apr5Moderate
May7High
Jun8Very high
Jul9Very high
Aug7Very high
Sep5High
Oct3Moderate
Nov2Low
Dec1Low

Air quality in Helena 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 Helena is worst in August — around 25 µg/m³ PM2.5 (moderate), about 3.1× the cleanest month (December, 8 µg/m³).

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

0102030JanFebMarAprMayJunJulAugSepOctNovDecGoodModerateGoodAug 1225 µg/m³Dec 178 µg/m³
PM2.5 (µg/m³)Level
Jan9Good
Feb9Good
Mar11Good
Apr11Good
May11Good
Jun9Good
Jul23Moderate
Aug25Moderate
Sep17Moderate
Oct8Good
Nov9Good
Dec8Good
Location & terrain

Where is Helena?

Helena sits at 46.6°N, 112.0°W, 4,058 ft above sea level, in United States. The nearest listed city is Butte, 47 mi away.

Topography around Helena

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

Within 2 miles, the terrain around Helena has significant variations in elevation — a maximum elevation change of 1,588 ft around an average of 4,219 ft above sea level; within 10 miles, large variations in elevation — a maximum elevation change of 3,481 ft; within 50 miles, very significant variations in elevation — a maximum elevation change of 6,729 ft.

The land around Helena is covered by artificial surfaces (45%), trees (28%) and grassland (25%) within 2 miles, grassland (53%) and trees (31%) within 10 miles, and grassland (53%) and trees (42%) within 50 miles.

2 miles
1,588 ft
10 miles
3,481 ft
50 miles
6,729 ft
treesgrasslandcroplandartificial surfacesbare terrainwater
June weather nearby: Butte 47 mi · Great Falls 71 mi · Bozeman 79 mi · Missoula 94 mi · Kalispell 153 mi · Whitefish 165 mi · Billings 178 mi · Rexburg 191 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 Helena (46.5927°, -112.0361°, elevation 4,058 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).