Rogers Pass, 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 Rogers Pass's primary NOAA station, ROGERS PASS 9 NNE.
The climate verdict for Rogers Pass
Dryness leads the climate profile for Rogers Pass, Montana, with 17.1 inches of precipitation a year. NOAA records an annual average of 44°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.
- 44°F
- average temperature, NOAA 1991-2020 normal
- 40/100
- comfort score, above 6% of station-mapped location scores
- 17.1"
- annual precipitation
- 117 days
- growing season, frost-free days
Rogers Pass: NOAA 1991-2020 normals describe a typical year, not a forecast. Method: /methodology.
Normals record plate
Sheet USC00247159 · Rogers Pass, MT 44°F mean · 17.1" precip
TEMP-COOL · RANK-COOL · PHOTO-FINISH · PRCP-DRY · SWING-MID · COMF-LOW · LOAD-HEAT · STN-1 · BOOK-FULL
- TEMP-COOL 44°F
- RANK-COOL #1,029
- PHOTO-FINISH ≈ Hill City
- PRCP-DRY 17.1"
- SWING-MID 40°F
- COMF-LOW 40/100
- LOAD-HEAT 7,894 HDD
- STN-1 USC00247159
- BOOK-FULL 6/6 fields
Nearest mean-temperature peer: Hill City, SD (+ 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.
- Rogers Pass (this station) 44°F
- Cold Idaho City, ID 44°F
- Hot Rexburg Madison…, ID 44°F
- Near Hill City, SD 44°F
- Near Yellowpine, ID 44°F
Rogers Pass 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 · Rogers Pass
Rogers Pass: 19/100 · grade F
Rogers Pass publishes 4 of 6 Living Index dimensions (NOAA annual/seasonal normals · NOAA daily multivariate normals); 2 missing weights rescale to 100.
PlainClimate-derived for Rogers Pass, not an official NOAA rating. Rankings still use Comfort Score 40/100 (separate formula). Breakpoints and limits.
| Dimension | Station value | Score |
|---|---|---|
| Precipitation balance | 17.1 in · 17.9 from 35 in | 36/100 · F |
| Normal heat + freeze calendar | 194 calendar days | 17/100 · F |
| Annual temperature balance | 43.9°F · 23.6° from 67.5°F | 16/100 · F |
| Frost-free season | 117 days/year | 6/100 · F |
Rogers Pass · 2026-08-04 · NOAA NCEI Climate Normals · method · Comfort Score method.
Rogers Pass is a continental Köppen climate: Dfb
Coldest-month mean 26.0°F and warmest-month mean 66.0°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
- 66.0°F
- Coldest month
- 26.0°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 Rogers Pass sits across the climate record
Three NOAA fields for Rogers Pass's primary station, temperature, precipitation, and seasonal swing, are ranked against every station-mapped normal that carries the same field.
- Annual temperature
- Cooler than 85%
- Among 6,861 stations, Rogers Pass sits in the cooler third of annual means.
- Annual precipitation
- Drier than 78%
- Rogers Pass's annual total ranks in the drier third of 6,352 measured normals.
- Seasonal temperature swing
- 36th percentile swing
- Typical seasonal amplitude versus 6,861 complete station-years.
How Rogers Pass compares across U.S. station-mapped locations
Rogers Pass'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
Monthly Temperatures
Average daily high and low temperatures by month
| Month | Avg High | Avg Low | Mean | Precip | Freeze Days | 90°F+ Days |
|---|---|---|---|---|---|---|
| January | 36°F (2°C) | 17°F (-8°C) | 27°F (-3°C) | 0.6" | 25.4 | 0.0 |
| February | 37°F (3°C) | 16°F (-9°C) | 27°F (-3°C) | 0.8" | 24.9 | 0.0 |
| March | 45°F (7°C) | 23°F (-5°C) | 34°F (1°C) | 0.9" | 25.2 | 0.0 |
| April | 53°F (12°C) | 30°F (-1°C) | 42°F (5°C) | 1.8" | 18.4 | 0.0 |
| May | 62°F (17°C) | 38°F (4°C) | 50°F (10°C) | 3.0" | 6.5 | 0.0 |
| June | 71°F (21°C) | 46°F (8°C) | 58°F (15°C) | 3.1" | 0.6 | 0.6 |
| July | 82°F (28°C) | 51°F (10°C) | 66°F (19°C) | 1.2" | 0.0 | 5.7 |
| August | 81°F (27°C) | 49°F (9°C) | 65°F (18°C) | 1.2" | 0.7 | 4.8 |
| September | 70°F (21°C) | 41°F (5°C) | 55°F (13°C) | 1.6" | 4.5 | 0.8 |
| October | 55°F (13°C) | 32°F (0°C) | 44°F (7°C) | 1.4" | 15.3 | 0.0 |
| November | 42°F (6°C) | 25°F (-4°C) | 33°F (1°C) | 0.8" | 21.1 | 0.0 |
| December | 34°F (1°C) | 18°F (-8°C) | 26°F (-3°C) | 0.8" | 26.6 | 0.0 |
The year, day by day
Summer here tops out rather than builds: the warmest normal high is 84°F around July 26, short of 90°F on every date, while 194 dates carry a normal low at or below freezing, the coldest 16°F near February 11.
The freezing stretch
The normal low stays at or below 32°F into April 27, then returns to freezing around October 17, covering 194 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 30, when 36% of years recorded at least a hundredth of an inch. The driest is September 2 at 20%. Summed across the calendar, that is about 89 wet dates a year.
The widest day
July 26 carries the biggest normal gap between afternoon and dawn, 32°F between the normal high and the normal low.
Look up any date
Any date's 1991–2020 normal for Rogers Pass.
Where Rogers Pass Stands Nationally
Freezing is routine here by normals standards — the normal low reaches 32°F or colder on about 194 nights a year, more than most ranked stations.
Rogers Pass 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
6.8 days with precipitation
7.6 days with precipitation
7.2 days with precipitation
8.7 days with precipitation
9.9 days with precipitation
9.8 days with precipitation
6.3 days with precipitation
6.6 days with precipitation
6.0 days with precipitation
7.0 days with precipitation
6.0 days with precipitation
6.5 days with precipitation
Rogers Pass spreads its precipitation across the year
Neither half of the year dominates here: June through August take 32% of the annual total and December through February 13%, with neither reaching the 35% that would mark a distinct wet season. Rogers Pass has no dry season to plan around, though it does carry a 40°F seasonal spread.
The gap between the wettest and driest month still matters: June averages 3.1" and January 0.6". The three wettest months together take 46% 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.
Rogers Pass is dry, and what does fall arrives gently
Only about 88 days a year record measurable precipitation here, 24% of the calendar, and they carry 17.1" between them. At roughly 0.19 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 10 wet days; the driest is September 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 15
50% probability date
Last Spring Freeze
May 21
50% probability date
Growing Season
117 days
Heating & Cooling Degree Days
Annual totals indicate energy demand for heating and cooling
Heating Degree Days
7,894
Higher = more heating needed
Cooling Degree Days
218
Higher = more cooling needed
Warmest Month
July
Coldest Month
December
Nationwide similar cities
Other rankable U.S. places outside MT closest to Rogers Pass 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 (44°F here).
- Bethel, ME 44°F · 0.0°F off
- Colton, NY 44°F · 0.0°F off
- Dayton, WY 44°F · 0.0°F off
- Del Norte, CO 44°F · 0.0°F off
Closest by annual precipitation
Nearest out-of-state peers by annual precipitation (17.1" here), excluding temperature-peer places.
- Bowman, ND 17.1" · 0.0" off
- Bisbee, AZ 17.1" · 0.0" off
- Morgan, UT 17.1" · 0.0" off
- Stratford, TX 17.1" · 0.0" off
Data-derived climate profile
How Rogers Pass's climate pattern fits together
heating led · dry · mid swing
Rogers Pass's energy balance leans toward cold weather: 7,894 annual heating degree days against 218 for cooling. Its 40.0°F seasonal range still makes the monthly rows more useful than the annual average alone.
Only about 117 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 Rogers Pass's middle-range seasonal profile. The measured spread is 40.0°F. The annual average is 44°F. Neither the annual mean nor one extreme month represents the full calendar on its own.
Rogers Pass's cold-season load does not imply a wet climate. Annual precipitation is 17.1 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 Rogers Pass'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 Rogers Pass, not an official NOAA class or a year-ahead forecast.
Questions about Rogers Pass's climate
How much rain does Rogers Pass get? ▼
How cold does Rogers Pass get in winter? ▼
How much energy does heating and cooling require in Rogers Pass? ▼
Data Sources
Data source: NOAA U.S. Climate Normals v1.0.1 (1991-2020). All figures on this page are from Rogers Pass's primary station: ROGERS PASS 9 NNE (USC00247159). 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 Rogers Pass; 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 Rogers Pass 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.