Broadus, MT Climate: Temperature & Rain by Month
Pulled from NOAA NCEI 1991–2020 normals →: climate measurements used in PlainClimate's documented score
30-year climate normals (1991-2020) from Broadus's primary NOAA station, BROADUS.
The climate verdict for Broadus
Dryness leads the climate profile for Broadus, Montana, with 14.9 inches of precipitation a year. NOAA records an annual average of 48°F. At 52/100 (moderate) the climate comfort score falls in the bottom third of the station-mapped U.S. score corpus, exceeding only 24% of scores.
- 48°F
- annual average temperature (NOAA normal)
- 52/100
- comfort score, above 24% of station-mapped location scores
- 14.9"
- yearly precipitation total
- 135 days
- frost-free growing season
Broadus: NOAA 1991-2020 normals describe a typical year, not a forecast. Method: /methodology.
Normals record plate
Sheet USC00241127 · Broadus, MT 48°F mean · 14.9" precip
TEMP-COOL · RANK-COOL · PHOTO-FINISH · PRCP-DRY · SWING-WIDE · COMF-LOW · LOAD-HEAT · STN-1 · BOOK-FULL
- TEMP-COOL 48°F
- RANK-COOL #2,196
- PHOTO-FINISH ≈ Williamsburg
- PRCP-DRY 14.9"
- SWING-WIDE 51°F
- COMF-LOW 52/100
- LOAD-HEAT 6,871 HDD
- STN-1 USC00241127
- BOOK-FULL 6/6 fields
Nearest mean-temperature peer: Williamsburg, IA (+ 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.
- Broadus (this station) 48°F
- Cold Greeley, NE 48°F
- Hot Chambers, NE 48°F
- Near Williamsburg, IA 48°F
- Near Castana, IA 48°F
Broadus 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 · Broadus
Broadus: 21/100 · grade F
Broadus publishes 4 of 6 Living Index dimensions (NOAA annual/seasonal normals · NOAA daily multivariate normals); 2 missing weights rescale to 100.
PlainClimate-derived for Broadus, not an official NOAA rating. Rankings still use Comfort Score 52/100 (separate formula). Breakpoints and limits.
| Dimension | Station value | Score |
|---|---|---|
| Annual temperature balance | 48.2°F · 19.3° from 67.5°F | 32/100 · F |
| Precipitation balance | 14.9 in · 20.1 from 35 in | 28/100 · F |
| Frost-free season | 135 days/year | 15/100 · F |
| Normal heat + freeze calendar | 212 calendar days | 8/100 · F |
Broadus · 2026-08-04 · NOAA NCEI Climate Normals · method · Comfort Score method.
Broadus's normals sit in a dry climate class: BSk
Precipitation is low relative to temperature but above true desert thresholds: cold semi-arid steppe (BSk). Class BSk is the Peel et al. (2007) label for this station's monthly mean temperature and precipitation normals: dry (arid or semi-arid), specifically cold semi-arid steppe.
- Köppen code
- BSk
- Group
- Dry (arid or semi-arid)
- Warmest month
- 74.8°F
- Coldest month
- 24.1°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 Broadus sits across the climate record
Three NOAA fields for Broadus's primary station, temperature, precipitation, and seasonal swing, are ranked against every station-mapped normal that carries the same field.
- Annual temperature
- 32nd percentile warmth
- Mid-pack annual mean versus 6,861 station normals.
- Annual precipitation
- Drier than 83%
- Broadus's annual total ranks in the drier third of 6,352 measured normals.
- Seasonal temperature swing
- Wider than 83%
- Warmest-to-coldest month gap for Broadus is large versus 6,861 complete station-years.
How Broadus compares across U.S. station-mapped locations
Broadus's comfort score vs. all station-mapped locations
PlainClimate composite comfort index (1–100), NOAA 1991–2020 normals
52 24th percentile score exceeds 24% 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%). Below this entry.
- 50–60: 1,329 station-mapped locations (21%). This entry sits in this band.
- 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
Broadus's measured station temperature trend
MethodologyAcross 70 complete annual observations from 1922 to 2024, BROADUS warmed at a fitted rate of 0.19°C per decade. The line shows the fitted change relative to its first year, not raw year-to-year temperatures or a forecast.
- Broadus primary station fitted change +0.19 °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 | 37°F (3°C) | 11°F (-11°C) | 24°F (-4°C) | 0.4" | 29.9 | 0.0 |
| February | 40°F (5°C) | 14°F (-10°C) | 27°F (-3°C) | 0.5" | 26.9 | 0.0 |
| March | 52°F (11°C) | 24°F (-5°C) | 38°F (3°C) | 0.8" | 25.6 | 0.0 |
| April | 61°F (16°C) | 33°F (0°C) | 47°F (8°C) | 1.8" | 14.6 | 0.0 |
| May | 71°F (21°C) | 42°F (6°C) | 56°F (14°C) | 2.8" | 4.3 | 0.8 |
| June | 81°F (27°C) | 52°F (11°C) | 67°F (19°C) | 2.4" | 0.1 | 4.8 |
| July | 91°F (33°C) | 59°F (15°C) | 75°F (24°C) | 1.7" | 0.0 | 17.4 |
| August | 90°F (32°C) | 56°F (13°C) | 73°F (23°C) | 1.3" | 0.1 | 16.7 |
| September | 79°F (26°C) | 46°F (8°C) | 62°F (17°C) | 1.2" | 1.5 | 5.3 |
| October | 63°F (17°C) | 34°F (1°C) | 49°F (9°C) | 1.1" | 12.8 | 0.3 |
| November | 48°F (9°C) | 22°F (-5°C) | 35°F (2°C) | 0.5" | 25.9 | 0.0 |
| December | 38°F (3°C) | 14°F (-10°C) | 26°F (-4°C) | 0.5" | 30.4 | 0.0 |
The year, day by day
Broadus works both ends of the calendar. Normal highs climb to 93°F by July 25 and hold at or above 90°F on 36 dates, then normal lows drop to freezing or below on 176 dates, bottoming at 11°F around January 4.
When the heat sits
Normal highs reach 90°F from July 11 through August 15, covering 36 dates. The broader mild season, normal highs of 70°F or more, runs May 15 to October 3.
This counts calendar dates whose 1991–2020 normal high reaches 90°F. It is a smaller number than the 90°F+ day counts in the monthly table above, which measure how often the threshold was actually crossed in a typical year. A date can average 88°F and still exceed 90°F in half of all years.
The freezing stretch
The normal low stays at or below 32°F into April 13, then returns to freezing around October 21, covering 176 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 27, when 33% of years recorded at least a hundredth of an inch. The driest is December 3 at 11%. Summed across the calendar, that is about 72 wet dates a year.
The widest day
August 31 carries the biggest normal gap between afternoon and dawn, 35°F between the normal high and the normal low.
Look up any date
Any date's 1991–2020 normal for Broadus.
Where Broadus Stands Nationally
A drier-than-most normal water year — around 15 inches, below what four out of five ranked stations collect.
Daily temperature swings run wider than most of the country, peaking near 35°F between the normal high and low.
Broadus earns 2 nationally notable standings (outer quintiles) against 6,860 NOAA 1991–2020 normals stations; only those extremes render.
Monthly Precipitation
Average monthly rainfall
4.7 days with precipitation
4.7 days with precipitation
4.7 days with precipitation
7.4 days with precipitation
9.7 days with precipitation
8.9 days with precipitation
6.8 days with precipitation
6.0 days with precipitation
5.3 days with precipitation
5.9 days with precipitation
4.1 days with precipitation
3.6 days with precipitation
Broadus runs a summer-peaked wet season
36% of Broadus's yearly precipitation falls in June, July and August alone, against the 25% an evenly spread year would give those three months. The wettest month is May at 2.8", on a wide 50.7°F gap between its warmest and coldest month. Warm-season convection and, across the Southwest, the North American monsoon produce this shape: rain arrives in short heavy bursts during the hottest part of the year rather than as long cool-season soaking.
- Wettest three months: May, June, April, taking 46% of the annual total between them.
- Driest month: January at 0.4".
- Winter share: 10% falls in December, January and February.
Shares are computed from this station's own 1991-2020 monthly precipitation normals. A summer-peaked label means the June-August share reaches 35%; it describes timing across an average year, not any single season, and says nothing about how heavy an individual storm can be.
How Broadus's precipitation splits across the calendar
About 72 days a year record measurable precipitation here, carrying 14.9" between them, or roughly 0.21 inches on a typical wet day. That sits in the middle band: neither the many-light-days pattern of the Pacific Northwest and the Great Lakes, nor the few-heavy-events pattern of the Gulf and the desert Southwest.
A wet day is one recording at least 0.01 inches. These are 1991-2020 normals: they describe an average year and say nothing about the heaviest single storm on record.
Frost Dates & Growing Season
First Fall Freeze
September 28
50% probability date
Last Spring Freeze
May 16
50% probability date
Growing Season
135 days
Heating & Cooling Degree Days
Annual totals indicate energy demand for heating and cooling
Heating Degree Days
6,871
Higher = more heating needed
Cooling Degree Days
779
Higher = more cooling needed
Warmest Month
July
Coldest Month
January
Nationwide similar cities
Other rankable U.S. places outside MT closest to Broadus 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 (48°F here).
- Belle Plaine, IA 48°F · 0.0°F off
- Compton, IL 48°F · 0.0°F off
- Copake, NY 48°F · 0.0°F off
- Deposit, NY 48°F · 0.0°F off
Closest by annual precipitation
Nearest out-of-state peers by annual precipitation (14.9" here), excluding temperature-peer places.
- Kanab, UT 14.9" · 0.0" off
- Laketown, UT 14.9" · 0.0" off
- Dillon, CO 14.9" · 0.0" off
- Lamoille, NV 14.9" · 0.0" off
Scarce-water calendar
Where Broadus's limited precipitation lands
heating led · dry · mid swing
Broadus's energy balance leans toward cold weather: 6,871 annual heating degree days against 779 for cooling. Its 50.7°F seasonal range still makes the monthly rows more useful than the annual average alone.
Only about 135 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 January mark the typical warm and cold ends of the calendar in Broadus's middle-range seasonal profile. The measured spread is 50.7°F. The annual average is 48°F. Neither the annual mean nor one extreme month represents the full calendar on its own.
Broadus's cold-season load does not imply a wet climate. Annual precipitation is 14.9 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.
Broadus wettest normal
May
May concentrates the scarce annual total (14.9 inches).
Broadus driest normal
January
January is typically driest; arid stations are defined by when water is absent, not by a four-season grid.
Questions about Broadus's climate
How dry is Broadus? ▼
How many days above 90°F does Broadus get? ▼
How much energy does heating and cooling require in Broadus? ▼
Data Sources
Data source: NOAA U.S. Climate Normals v1.0.1 (1991-2020). All figures on this page are from Broadus's primary station: BROADUS (USC00241127). For informational purposes only.
Place identity: U.S. Census Bureau 2024 Gazetteer places. The 2024 Census Gazetteer identifies the exact name-and-state match as an incorporated place (GEOID 3009700). Match rule for Broadus: exact normalized name + state only, no fuzzy expansion, so nearby differently spelled facilities stay unmatched.
On this page every temperature, precipitation, and derived score for Broadus 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.