Geraldine, MT Climate: Temperature & Rain by Month
Average temperature and precipitation from NOAA NCEI 1991–2020 normals →, with a derived climate comfort score
30-year climate normals (1991-2020) from Geraldine's primary NOAA station, GERALDINE.
The climate verdict for Geraldine
Dryness leads the climate profile for Geraldine, Montana, with 16.9 inches of precipitation a year. NOAA records an annual average of 47°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.
- 47°F
- average temperature, NOAA 1991-2020 normal
- 52/100
- comfort score, above 24% of station-mapped location scores
- 16.9"
- precipitation, annual total
- 135 days
- frost-free growing season
Geraldine: NOAA 1991-2020 normals describe a typical year, not a forecast. Method: /methodology.
Normals record plate
Sheet USC00243445 · Geraldine, MT 47°F mean · 16.9" precip
TEMP-COOL · RANK-COOL · PHOTO-FINISH · PRCP-DRY · SWING-MID · COMF-LOW · LOAD-HEAT · STN-1 · BOOK-FULL
- TEMP-COOL 47°F
- RANK-COOL #1,784
- PHOTO-FINISH ≈ Cody
- PRCP-DRY 16.9"
- SWING-MID 45°F
- COMF-LOW 52/100
- LOAD-HEAT 7,051 HDD
- STN-1 USC00243445
- BOOK-FULL 6/6 fields
Nearest mean-temperature peer: Cody, WY (+ 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.
- Geraldine (this station) 47°F
- Hot Lingle, WY 47°F
- Near Cody, WY 47°F
- Near Linden Wwtp, MI 47°F
- Near Vernon, UT 47°F
Geraldine 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 · Geraldine
Geraldine: 27/100 · grade F
Geraldine publishes 4 of 6 Living Index dimensions (NOAA annual/seasonal normals · NOAA daily multivariate normals); 2 missing weights rescale to 100.
PlainClimate-derived for Geraldine, not an official NOAA rating. Rankings still use Comfort Score 52/100 (separate formula). Breakpoints and limits.
| Dimension | Station value | Score |
|---|---|---|
| Precipitation balance | 16.9 in · 18.1 from 35 in | 35/100 · F |
| Normal heat + freeze calendar | 177 calendar days | 27/100 · F |
| Annual temperature balance | 46.8°F · 20.7° from 67.5°F | 26/100 · F |
| Frost-free season | 135 days/year | 15/100 · F |
Geraldine · 2026-08-04 · NOAA NCEI Climate Normals · method · Comfort Score method.
Geraldine'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
- 70.6°F
- Coldest month
- 25.8°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 Geraldine sits across the climate record
Three NOAA fields for Geraldine's primary station, temperature, precipitation, and seasonal swing, are ranked against every station-mapped normal that carries the same field.
- Annual temperature
- Cooler than 74%
- Among 6,861 stations, Geraldine sits in the cooler third of annual means.
- Annual precipitation
- Drier than 78%
- Geraldine's annual total ranks in the drier third of 6,352 measured normals.
- Seasonal temperature swing
- 57th percentile swing
- Typical seasonal amplitude versus 6,861 complete station-years.
How Geraldine compares across U.S. station-mapped locations
Geraldine'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
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) | 15°F (-10°C) | 26°F (-3°C) | 0.6" | 25.6 | 0.0 |
| February | 40°F (5°C) | 16°F (-9°C) | 28°F (-2°C) | 0.6" | 23.4 | 0.0 |
| March | 50°F (10°C) | 24°F (-5°C) | 37°F (3°C) | 0.8" | 23.5 | 0.0 |
| April | 59°F (15°C) | 32°F (0°C) | 46°F (8°C) | 2.1" | 14.5 | 0.0 |
| May | 68°F (20°C) | 41°F (5°C) | 55°F (13°C) | 2.7" | 4.4 | 0.6 |
| June | 76°F (24°C) | 49°F (9°C) | 62°F (17°C) | 3.2" | 0.1 | 2.0 |
| July | 86°F (30°C) | 55°F (13°C) | 71°F (21°C) | 1.7" | 0.0 | 13.0 |
| August | 86°F (30°C) | 53°F (12°C) | 69°F (21°C) | 1.3" | 0.1 | 12.5 |
| September | 75°F (24°C) | 45°F (7°C) | 60°F (16°C) | 1.5" | 2.1 | 2.6 |
| October | 60°F (16°C) | 34°F (1°C) | 47°F (8°C) | 1.1" | 13.0 | 0.1 |
| November | 46°F (8°C) | 24°F (-5°C) | 35°F (2°C) | 0.6" | 21.9 | 0.0 |
| December | 39°F (4°C) | 16°F (-9°C) | 27°F (-3°C) | 0.6" | 26.4 | 0.0 |
The year, day by day
Summer here tops out rather than builds: the warmest normal high is 89°F around July 30, short of 90°F on every date, while 177 dates carry a normal low at or below freezing, the coldest 14°F near January 1.
The freezing stretch
The normal low stays at or below 32°F into April 13, then returns to freezing around October 20, covering 177 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 June 10, when 47% of years recorded at least a hundredth of an inch. The driest is December 6 at 21%. Summed across the calendar, that is about 104 wet dates a year.
The widest day
August 8 carries the biggest normal gap between afternoon and dawn, 34°F between the normal high and the normal low.
Look up any date
Any date's 1991–2020 normal for Geraldine.
Where Geraldine Stands Nationally
Daily temperature swings run wider than most of the country, peaking near 34°F between the normal high and low.
Geraldine earns one nationally notable standing (outer quintile) against 6,860 NOAA 1991–2020 normals stations, middle-of-the-pack metrics stay silent here.
Monthly Precipitation
Average monthly rainfall
8.5 days with precipitation
6.8 days with precipitation
8.3 days with precipitation
9.8 days with precipitation
11.1 days with precipitation
14.4 days with precipitation
9.3 days with precipitation
7.4 days with precipitation
7.1 days with precipitation
7.9 days with precipitation
7.1 days with precipitation
6.2 days with precipitation
Geraldine runs a summer-peaked wet season
37% of Geraldine'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 June at 3.2", on a 44.8°F seasonal spread. 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: June, May, April, taking 48% of the annual total between them.
- Driest month: February at 0.6".
- 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.
Geraldine is dry, and what does fall arrives gently
Only about 104 days a year record measurable precipitation here, 28% of the calendar, and they carry 16.8" between them. At roughly 0.16 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 June at about 14 wet days; the driest is December at about 6.
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 26
50% probability date
Last Spring Freeze
May 14
50% probability date
Growing Season
135 days
Heating & Cooling Degree Days
Annual totals indicate energy demand for heating and cooling
Heating Degree Days
7,051
Higher = more heating needed
Cooling Degree Days
467
Higher = more cooling needed
Warmest Month
July
Coldest Month
January
Nationwide similar cities
Other rankable U.S. places outside MT closest to Geraldine 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 (47°F here).
- Chamberlain, SD 47°F · 0.0°F off
- Cody, WY 47°F · 0.0°F off
- Dakota City, IA 47°F · 0.0°F off
- Dodge, WI 47°F · 0.0°F off
Closest by annual precipitation
Nearest out-of-state peers by annual precipitation (16.9" here), excluding temperature-peer places.
- Sequim, WA 16.9" · 0.0" off
- Rawlins, WY 16.9" · 0.0" off
- Lamesa, TX 16.8" · 0.0" off
- Beulah, ND 16.9" · 0.0" off
Data-derived climate profile
How Geraldine's climate pattern fits together
heating led · dry · mid swing
Geraldine's energy balance leans toward cold weather: 7,051 annual heating degree days against 467 for cooling. Its 44.8°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 Geraldine's middle-range seasonal profile. The measured spread is 44.8°F. The annual average is 47°F. Neither the annual mean nor one extreme month represents the full calendar on its own.
Geraldine's cold-season load does not imply a wet climate. Annual precipitation is 16.9 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.
These labels group NOAA 1991-2020 normals from Geraldine's primary station, so the winter figures are a thirty-year average and not a floor: a single hard season can run well below them. Treat each band as a descriptive range for Geraldine, not an official NOAA class or a year-ahead forecast.
Questions about Geraldine's climate
How much rain does Geraldine get? ▼
How many days above 90°F does Geraldine get? ▼
How much energy does heating and cooling require in Geraldine? ▼
Data Sources
Data source: NOAA U.S. Climate Normals v1.0.1 (1991-2020). All figures on this page are from Geraldine's primary station: GERALDINE (USC00243445). 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 3030400). Match rule for Geraldine: 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 Geraldine 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.