Bozeman Gallatin Fld, MT Climate: Temperature & Rain by Month
Temperature and precipitation from NOAA NCEI 1991–2020 normals →, plus PlainClimate's derived comfort score
30-year climate normals (1991-2020) from Bozeman Gallatin Fld's primary NOAA station, BOZEMAN GALLATIN FLD.
The climate verdict for Bozeman Gallatin Fld
Dryness leads the climate profile for Bozeman Gallatin Fld, Montana, with 13.4 inches of precipitation a year. NOAA records an annual average of 43°F. At 40/100 (moderate) the climate comfort score falls in the bottom third of the station-mapped U.S. score corpus, exceeding only 6% of scores.
- 43°F
- average temperature, NOAA 1991-2020 normal
- 40/100
- comfort score, above 6% of station-mapped location scores
- 13.4"
- yearly precipitation total
- 113 days
- growing season, frost-free days
Bozeman Gallatin Fld: NOAA 1991-2020 normals describe a typical year, not a forecast. Method: /methodology.
Normals record plate
Sheet USW00024132 · Bozeman Gallatin Fld, MT 43°F mean · 13.4" precip
TEMP-COOL · RANK-COOL · PHOTO-FINISH · PRCP-DRY · SWING-WIDE · COMF-LOW · LOAD-HEAT · STN-1 · BOOK-FULL
- TEMP-COOL 43°F
- RANK-COOL #823
- PHOTO-FINISH ≈ Glennie
- PRCP-DRY 13.4"
- SWING-WIDE 47°F
- COMF-LOW 40/100
- LOAD-HEAT 8,245 HDD
- STN-1 USW00024132
- BOOK-FULL 6/6 fields
Nearest mean-temperature peer: Glennie, MI (+ 0 °F mean)
Instrument codes from this station's NOAA 1991–2020 normals, mean temperature, corpus warmth rank, photo-finish peer station, precipitation band, seasonal swing, comfort composite, degree-day load, and field book, not a livability rating.
Mean-temperature neighbourhood
Nationwide NOAA normal poles and nearest peers, not a reprint of every MT station list.
- Bozeman Gallati… (this station) 43°F
- Cold Craig, CO 43°F
- Hot Gaylord, MI 43°F
- Near Glennie, MI 43°F
- Near Washington Isla…, WI 43°F
Bozeman Gallatin Fld sits in Montana, the #6 coldest U.S. state at 43.4°F statewide annual average - see all 50 coldest states ranked by NOAA normals
Climate Living Index · Bozeman Gallatin Fld
Bozeman Gallatin Fld: 21/100 · grade F
Bozeman Gallatin Fld publishes 5 of 6 Living Index dimensions (NOAA annual/seasonal normals · NOAA daily multivariate normals · NOAA hourly normals); 1 missing weight rescale to 100.
PlainClimate-derived for Bozeman Gallatin Fld, not an official NOAA rating. Rankings still use Comfort Score 40/100 (separate formula). Breakpoints and limits.
| Dimension | Station value | Score |
|---|---|---|
| Summer moisture balance | 44.3°F mean dew point | 58/100 · C |
| Precipitation balance | 13.4 in · 21.6 from 35 in | 23/100 · F |
| Annual temperature balance | 42.9°F · 24.6° from 67.5°F | 12/100 · F |
| Normal heat + freeze calendar | 203 calendar days | 12/100 · F |
| Frost-free season | 113 days/year | 4/100 · F |
Bozeman Gallatin Fld · 2026-08-04 · NOAA NCEI Climate Normals · method · Comfort Score method.
Bozeman Gallatin Fld is a continental Köppen climate: Dfb
Coldest-month mean 20.7°F and warmest-month mean 67.4°F place this station in continental, no dry season, warm summer climates (Dfb). Class Dfb is the Peel et al. (2007) label for this station's monthly mean temperature and precipitation normals: continental, specifically continental, no dry season, warm summer.
- Köppen code
- Dfb
- Group
- Continental
- Warmest month
- 67.4°F
- Coldest month
- 20.7°F
Source: official public datasets monthly normals (1991–2020) at the city’s primary station. This is a station classification, not a mapped regional consensus.
National standing · heating-led station
Where Bozeman Gallatin Fld sits across the climate record
Three NOAA fields for Bozeman Gallatin Fld's primary station, temperature, precipitation, and seasonal swing, are ranked against every station-mapped normal that carries the same field.
- Annual temperature
- Cooler than 88%
- Among 6,861 stations, Bozeman Gallatin Fld sits in the cooler third of annual means.
- Annual precipitation
- Drier than 86%
- Bozeman Gallatin Fld's annual total ranks in the drier third of 6,352 measured normals.
- Seasonal temperature swing
- 67th percentile swing
- Typical seasonal amplitude versus 6,861 complete station-years.
How Bozeman Gallatin Fld compares across U.S. station-mapped locations
Bozeman Gallatin Fld's comfort score vs. all station-mapped locations
PlainClimate composite comfort index (1–100), NOAA 1991–2020 normals
40 6th percentile score exceeds 6% of 6,189 station-mapped location scores
- 0–10: 0 station-mapped locations (0%). Below this entry.
- 10–20: 0 station-mapped locations (0%). Below this entry.
- 20–30: 96 station-mapped locations (2%). Below this entry.
- 30–40: 280 station-mapped locations (5%). Below this entry.
- 40–50: 1,113 station-mapped locations (18%). This entry sits in this band.
- 50–60: 1,329 station-mapped locations (21%). Above this entry.
- 60–70: 1,236 station-mapped locations (20%). Above this entry.
- 70–80: 650 station-mapped locations (11%). Above this entry.
- 80–90: 921 station-mapped locations (15%). Above this entry.
- 90–100: 564 station-mapped locations (9%). Above this entry.
Source NOAA U.S. Climate Normals, PlainClimate comfort index · 1991–2020
Bozeman Gallatin Fld's measured station temperature trend
MethodologyAcross 75 complete annual observations from 1945 to 2025, BOZEMAN GALLATIN FLD warmed at a fitted rate of 0.23°C per decade. The line shows the fitted change relative to its first year, not raw year-to-year temperatures or a forecast.
- Bozeman Gallatin Fld primary station fitted change +0.23 °C/decade
Monthly Temperatures
Average daily high and low temperatures by month
| Month | Avg High | Avg Low | Mean | Precip | Freeze Days | 90°F+ Days |
|---|---|---|---|---|---|---|
| January | 32°F (0°C) | 10°F (-12°C) | 21°F (-6°C) | 0.4" | 30.1 | 0.0 |
| February | 36°F (2°C) | 13°F (-11°C) | 24°F (-4°C) | 0.4" | 27.1 | 0.0 |
| March | 46°F (8°C) | 22°F (-6°C) | 34°F (1°C) | 0.9" | 27.9 | 0.0 |
| April | 55°F (13°C) | 29°F (-2°C) | 42°F (6°C) | 1.7" | 21.0 | 0.0 |
| May | 65°F (18°C) | 38°F (3°C) | 51°F (11°C) | 2.1" | 7.4 | 0.1 |
| June | 74°F (23°C) | 44°F (7°C) | 59°F (15°C) | 2.5" | 0.7 | 1.6 |
| July | 85°F (30°C) | 49°F (10°C) | 67°F (20°C) | 1.1" | 0.0 | 10.6 |
| August | 84°F (29°C) | 47°F (9°C) | 66°F (19°C) | 0.9" | 0.2 | 9.2 |
| September | 73°F (23°C) | 40°F (4°C) | 56°F (13°C) | 1.0" | 4.7 | 2.0 |
| October | 58°F (14°C) | 29°F (-1°C) | 43°F (6°C) | 1.1" | 21.1 | 0.0 |
| November | 42°F (5°C) | 18°F (-8°C) | 30°F (-1°C) | 0.7" | 27.5 | 0.0 |
| December | 32°F (0°C) | 10°F (-12°C) | 21°F (-6°C) | 0.4" | 30.1 | 0.0 |
The year, day by day
Summer here tops out rather than builds: the warmest normal high is 88°F around July 27, short of 90°F on every date, while 203 dates carry a normal low at or below freezing, the coldest 9°F near December 23.
The freezing stretch
The normal low stays at or below 32°F into April 28, then returns to freezing around October 9, covering 203 dates in all.
Derived from the normal daily minimum. This is a different measure from the 50%-probability frost dates shown elsewhere on this page, which come from NOAA’s frost product.
Where the wet dates fall
The likeliest wet date is May 31, when 47% of years recorded at least a hundredth of an inch. The driest is December 24 at 22%. Summed across the calendar, that is about 107 wet dates a year.
The widest day
August 1 carries the biggest normal gap between afternoon and dawn, 37°F between the normal high and the normal low.
Look up any date
Any date's 1991–2020 normal for Bozeman Gallatin Fld.
Where Bozeman Gallatin Fld Stands Nationally
Winters bite deep and often: the normal nightly low dips to freezing or below on around 203 nights a year, placing this among the most frost-prone tenth of ranked stations.
Day-to-night contrast is extreme by national standards — the widest normal daily swing reaches about 37°F, sharper than nine in ten ranked stations see.
Bozeman Gallatin Fld earns 2 nationally notable standings (outer quintiles) against 6,860 NOAA 1991–2020 normals stations; only those extremes render.
Monthly Precipitation
Average monthly rainfall
6.6 days with precipitation
6.6 days with precipitation
8.5 days with precipitation
12.7 days with precipitation
13.1 days with precipitation
12.9 days with precipitation
8.3 days with precipitation
7.5 days with precipitation
7.3 days with precipitation
9.0 days with precipitation
7.9 days with precipitation
6.8 days with precipitation
Bozeman Gallatin Fld spreads its precipitation across the year
Neither half of the year dominates here: June through August take 34% of the annual total and December through February 10%, with neither reaching the 35% that would mark a distinct wet season. Bozeman Gallatin Fld has no dry season to plan around, though it does carry a wide 46.7°F gap between its warmest and coldest month.
The gap between the wettest and driest month still matters: June averages 2.5" and February 0.4". The three wettest months together take 47% of the year, against the 25% a perfectly flat distribution would give them.
Shares are computed from this station's own 1991-2020 monthly precipitation normals. "Spread across the year" means neither the June-August nor the December-February share reaches 35%; it describes an average year, not the variability of any single one.
Bozeman Gallatin Fld is dry, and what does fall arrives gently
Only about 107 days a year record measurable precipitation here, 29% of the calendar, and they carry 13.4" between them. At roughly 0.13 inches on an average wet day, this is not the damp drizzle of a marine climate; it is an arid record in which precipitation is both uncommon and light when it appears.
The wettest month by count is May at about 13 wet days; the driest is January at about 7.
A low per-event average in a dry record is a statement about typical days only. Arid regions can still take a large share of a year's total from a single convective storm, which a normal cannot show.
A wet day is one recording at least 0.01 inches. These are 1991-2020 normals: they describe an average year, not the extremes within it.
Frost Dates & Growing Season
First Fall Freeze
September 16
50% probability date
Last Spring Freeze
May 26
50% probability date
Growing Season
113 days
Heating & Cooling Degree Days
Annual totals indicate energy demand for heating and cooling
Heating Degree Days
8,245
Higher = more heating needed
Cooling Degree Days
232
Higher = more cooling needed
Warmest Month
July
Coldest Month
December
Humidity & Wind
Monthly averages from hourly observations
| Month | Humidity | Wind (mph) | Clear Sky % | Overcast % |
|---|---|---|---|---|
| January | 70% | 5.0 | 34% | 36% |
| February | 67% | 5.5 | 38% | 34% |
| March | 61% | 6.6 | 30% | 33% |
| April | 56% | 7.0 | 35% | 28% |
| May | 62% | 6.2 | 37% | 25% |
| June | 55% | 6.0 | 56% | 9% |
| July | 49% | 6.1 | 67% | 6% |
| August | 48% | 5.9 | 64% | 9% |
| September | 56% | 5.5 | 56% | 17% |
| October | 65% | 5.2 | 43% | 31% |
| November | 72% | 4.7 | 39% | 37% |
| December | 74% | 4.6 | 37% | 37% |
Nationwide similar cities
Other rankable U.S. places outside MT closest to Bozeman Gallatin Fld on two NOAA annual-normal axes (mean temperature and annual precipitation). Chip rows use distinct link sets.
Closest by average temperature
Nearest out-of-state peers by annual mean temperature (43°F here).
- Columbia, SD 43°F · 0.0°F off
- Denio, NV 43°F · 0.0°F off
- Fullerton, ND 43°F · 0.0°F off
- Government Camp, OR 43°F · 0.0°F off
Closest by annual precipitation
Nearest out-of-state peers by annual precipitation (13.4" here), excluding temperature-peer places.
- Briggsdale, CO 13.4" · 0.0" off
- Glendo, WY 13.4" · 0.0" off
- Stockton, CA 13.4" · 0.0" off
- Weiser, ID 13.4" · 0.0" off
Scarce-water calendar
Where Bozeman Gallatin Fld's limited precipitation lands
heating led · dry · mid swing
Bozeman Gallatin Fld's energy balance leans toward cold weather: 8,245 annual heating degree days against 232 for cooling. Its 46.7°F seasonal range still makes the monthly rows more useful than the annual average alone.
Only about 113 days are frost-free in a normal year. That short interval is consistent with the cold-season signal, but the measure does not predict the exact first or last freeze in any one year.
July and December mark the typical warm and cold ends of the calendar in Bozeman Gallatin Fld's middle-range seasonal profile. The measured spread is 46.7°F. The annual average is 43°F. Neither the annual mean nor one extreme month represents the full calendar on its own.
Bozeman Gallatin Fld's cold-season load does not imply a wet climate. Annual precipitation is 13.4 inches, which places the station in PlainClimate's dry range. Snowfall is not added to the interpretation because its annual value is missing. The snowfall and rainfall fields should be read separately rather than inferred from temperature.
Bozeman Gallatin Fld wettest normal
June
June concentrates the scarce annual total (13.4 inches).
Bozeman Gallatin Fld driest normal
February
February is typically driest; arid stations are defined by when water is absent, not by a four-season grid.
Questions about Bozeman Gallatin Fld's climate
How dry is Bozeman Gallatin Fld? ▼
How cold does Bozeman Gallatin Fld get in winter? ▼
How much energy does heating and cooling require in Bozeman Gallatin Fld? ▼
Data Sources
Data source: NOAA U.S. Climate Normals v1.0.1 (1991-2020). All figures on this page are from Bozeman Gallatin Fld's primary station: BOZEMAN GALLATIN FLD (USW00024132). For informational purposes only.
Place identity: U.S. Census Bureau 2024 Gazetteer places. The conservative exact name-and-state crosswalk finds no Census place match, so PlainClimate treats this as a station-mapped location and does not claim it is a municipality. No exact Gazetteer row for Bozeman Gallatin Fld; facility counts that depend on place identity are therefore an upper bound, not a municipal census.
On this page every temperature, precipitation, and derived score for Bozeman Gallatin Fld comes from its primary NOAA station record. No figure on this page is typed in by an editor - each value is rendered from NOAA 1991-2020 U.S. Climate Normals. See our editorial standards & corrections policy, the methodology behind these numbers, or report a data error. Data current as of 1991–2020 normals.