Bozeman weather in October

In October, Bozeman sees average daytime highs of 51°F and overnight lows near 29°F, with 2.3 in of precipitation across 10.6 wet days and about 10.7 hours of daylight. It is the 6th-warmest and 4th-wettest month of the year here.

Highs ease over the month, from about 58°F in the first days to 44°F by the end. The sky is clear or mostly clear about 36% of the time in October, and the air most often feels dry.

Daylight stretches from about 11 h 30 min at the start of October to 9 h 54 min by month's end. Set against the rest of the year, October is Bozeman's 4th-clearest and 2nd-windiest month. For the whole year in context, see Bozeman's year-round climate.

Daytime high
51°
6th warmest
Overnight low
29°
7th coldest
Precipitation
2.3 in
10.6 wet days
Daylight
10 h 42 min
6:49 AM – 5:30 PM
Cloud cover
54%
4th clearest
Wind
5 mph
2nd windiest
Solar energy
3.27 kWh/m²
Travel score
2.6
out of 10

Bozeman is city and the county seat of Gallatin County, Montana, United States.

Density
875/km²
people per km²
Founded
1864

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

Temperature in October

Average highAverage lowShaded bands: 10–90% of days

Highs ease over the month, from about 58°F in the first days to 44°F by the end.

A typical October day in Bozeman reaches about 51°F in the afternoon and slips back to 29°F overnight — a 22°F spread between the day's warmth and the night's chill. On most days the high lands between 37°F and 65°F. Set against its neighbours, October runs about 15°F cooler than September and about 15°F warmer than November.

20°40°60°80°151015202531
Avg high (°F)Avg low (°F)
15935
25835
35834
45734
55733
65633
75532
85532
95432
105431
115331
125331
135330
145230
155230
165129
175129
185029
195028
204928
214928
224827
234827
244726
254726
264626
274625
284525
294424
304424
314323

How October really feels in Bozeman

Once humidity and wind are folded in, October averages 0 days that feel above 90°F and 31 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
31
wind chill below the day's low

The story in October is cold — wind chill drags the overnight "feels like" below the raw low.

Bozeman weather by month

How October compares with the rest of the year at a glance. October is the 6th-warmest and 4th-wettest month here — the current month is highlighted below.

MonthHigh / Low (°F)Rainfall (inches)Wet daysSnow daysDaylight (hours)Travel score
Jan28° / 12°1.28.798.90.0
Feb31° / 13°1.38.69.310.10.0
Mar39° / 19°1.911.39.511.60.1
Apr47° / 26°3.214.19.513.31.4
May58° / 35°4.016.33.214.73.6
Jun67° / 42°4.214.40.715.45.6
Jul78° / 48°2.08.6015.17.3
Aug77° / 47°1.67.2013.97.6
Sep66° / 40°2.18.30.912.36.4
Oct51° / 29°2.310.64.810.72.6
Nov37° / 17°1.79.58.49.30.0
Dec28° / 10°1.38.798.60.0

Cloud cover in October

ClearMostly clearPartly cloudyMostly cloudyOvercast

The sky is clear or mostly clear about 36% of the time in October.

Beyond those clear spells, partly cloudy skies cover about 20% of October, with mostly cloudy or overcast conditions the remaining 44%. Skies tend to cloud over as the month goes on.

0%25%50%75%100%151015202531
Clearer (%)Cloudier (%)
16139
26139
36139
46040
55941
65941
75941
85842
95743
105743
115743
125743
135743
145644
155644
165644
175545
185446
195446
205347
215347
225446
235347
245347
255347
265347
275347
285347
295347
305248
315248

Chance of precipitation in October

Any precipitationSnow

Bozeman gets around 2.3 in of rain and snow over 10.6 wet days in October. The line is the day-by-day chance of measurable precipitation.

Day to day, the chance of measurable precipitation averages around 33% and peaks near 35% on the wettest days, and about 5 days bring snow.

0%10%20%30%40%50%151015202531
Rain chance (%)Snow chance (%)
1299
23010
33111
43112
53212
63313
73413
83413
93413
103414
113414
123414
133314
143314
153314
163214
173214
183214
193215
203215
213216
223216
233317
243317
253318
263419
273419
283420
293521
303521
313522

Humidity in October

DryComfortableHumidMuggyOppressiveMiserable

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

By dew point, October 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%151015202531
Dry (%)
1100
2100
3100
4100
5100
6100
7100
8100
9100
10100
11100
12100
13100
14100
15100
16100
17100
18100
19100
20100
21100
22100
23100
24100
25100
26100
27100
28100
29100
30100
31100

Wind in October

Winds average 5 mph in October.

Across October, daily wind ranges from about 4 mph on the calmest days to 5 mph at its breeziest. It stays fairly steady from day to day.

0246810151015202531
Wind speed (mph)Feels
14calm
24calm
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
315calm

Sunrise & sunset in October

DaylightNight

Daylight runs from about 11 h 30 min at the start of October to 9 h 54 min by month's end. The lit band spans sunrise to sunset each day.

Days shrink by about 96 minutes over October. Sunrise moves from 6:28 AM to 7:10 AM, and sunset from 5:58 PM to 5:06 PM.

12 AM4 AM8 AM12 PM4 PM8 PM12 AM151015202531
Daylight (h)Sunrise (AM)Sunset (PM)
111.56:285:58
211.46:305:56
311.46:315:54
411.36:325:52
511.36:345:50
611.26:355:48
711.26:365:46
811.16:385:44
911.16:395:42
1011.06:405:41
1110.96:425:39
1210.96:435:37
1310.86:455:35
1410.86:465:33
1510.76:475:31
1610.76:495:30
1710.66:505:28
1810.66:515:26
1910.56:535:24
2010.56:545:23
2110.46:565:21
2210.46:575:19
2310.36:585:18
2410.37:005:16
2510.27:015:15
2610.27:035:13
2710.17:045:11
2810.17:065:10
2910.07:075:08
3010.07:085:07
319.97:105:06

Solar energy in October

Daily solar energy (kWh/m²)

Average shortwave solar energy reaching the ground each day in October, about 3.27 kWh/m².

For context, solar energy here swings from a low near 1.67 kWh/m² to a high of 7.6 kWh/m² in July across the year — October's 3.27 kWh/m² falls in the middle.

012345151015202531
Solar energy (kWh/m²)Level
14.0Bright
24.0Moderate
33.9Moderate
43.9Moderate
53.8Moderate
63.8Moderate
73.7Moderate
83.7Moderate
93.6Moderate
103.5Moderate
113.5Moderate
123.5Moderate
133.4Moderate
143.4Moderate
153.3Moderate
163.3Moderate
173.2Moderate
183.2Moderate
193.1Moderate
203.1Moderate
213.1Moderate
223.0Moderate
233.0Moderate
242.9Moderate
252.9Moderate
262.9Moderate
272.8Moderate
282.8Moderate
292.7Moderate
302.7Moderate
312.6Moderate
Planning a trip in October

Hazard calendar for Bozeman

In seasonPeak

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

Bozeman's rainy season runs March–July, when most of the year's rain falls.

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

Is October a good time to visit Bozeman?

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

2.6
Sightseeing
6th-best month of the year
0.0
Beach & pool
6th-best month of the year

October is a weaker month for outdoor sightseeing in Bozeman.

What to pack for Bozeman in October

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

In October, Bozeman sees daytime highs around 51°F and nights near 29°F. Pack a warm layer. Worth having: rain gear. About 11 days see rain.

a warm layerrain gear

UV index in Bozeman in October

LowModerateHighVery highExtreme

Clear-sky midday UV in October peaks around 4 — enough to warrant sun protection. The full-year curve, shaded by WHO exposure level, is below.

Under clear skies, the midday UV index in Bozeman peaks around July 12 at about 9 (very high) — sunscreen, a hat and midday shade are essential. It bottoms out near January 1 at about 1 (low).

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

025710JanFebMarAprMayJunJulAugSepOctNovDecLowModerateVery highHighModerateLowJul 12UV 9Jan 1UV 1
UV index (midday)Level
Jan1Low
Feb2Moderate
Mar4Moderate
Apr5Moderate
May7Very high
Jun9Very high
Jul9Very high
Aug7Very high
Sep6High
Oct4Moderate
Nov2Low
Dec1Low

Air quality in Bozeman in October

GoodModeratePoorUnhealthyVery unhealthy

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

Air quality in Bozeman is worst in August — around 19 µg/m³ PM2.5 (moderate), about 3.2× the cleanest month (January, 6 µg/m³).

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

0102030JanFebMarAprMayJunJulAugSepOctNovDecGoodModerateGoodAug 1618 µg/m³Jan 126 µg/m³
PM2.5 (µg/m³)Level
Jan6Good
Feb7Good
Mar9Good
Apr10Good
May10Good
Jun9Good
Jul15Moderate
Aug19Moderate
Sep15Moderate
Oct7Good
Nov8Good
Dec6Good
Location & terrain

Where is Bozeman?

Bozeman sits at 45.7°N, 111.0°W, 4,816 ft above sea level, in United States. The nearest listed city is Butte, 75 mi away.

Topography around Bozeman

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

Within 2 miles, the terrain around Bozeman has only modest variations in elevation — a maximum elevation change of 627 ft around an average of 4,843 ft above sea level; within 10 miles, very significant variations in elevation — a maximum elevation change of 4,731 ft; within 50 miles, very significant variations in elevation — a maximum elevation change of 7,293 ft.

The land around Bozeman is covered by artificial surfaces (36%), grassland (32%) and trees (23%) within 2 miles, grassland (44%) and trees (34%) within 10 miles, and grassland (54%) and trees (36%) within 50 miles.

2 miles
627 ft
10 miles
4,731 ft
50 miles
7,293 ft
treesgrasslandcroplandartificial surfacesbare terrainmoss and lichen
October weather nearby: Butte 75 mi · Helena 79 mi · Billings 122 mi · Great Falls 126 mi · Rexburg 133 mi · Idaho Falls 160 mi · Missoula 163 mi · Conda 206 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 Bozeman (45.6797°, -111.0386°, elevation 4,816 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).