Collbran, CO 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 Collbran's primary NOAA station, COLLBRAN 1WSW.
The climate verdict for Collbran
Dryness leads the climate profile for Collbran, Colorado, with 15.3 inches of precipitation a year. NOAA records an annual average of 48°F. At 44/100 (moderate) the climate comfort score falls in the bottom third of the station-mapped U.S. score corpus, exceeding only 10% of scores.
- 48°F
- average temperature, NOAA 1991-2020 normal
- 44/100
- comfort score, above 10% of station-mapped location scores
- 15.3"
- annual precipitation · 60" snow
- 136 days
- growing season, frost-free days
Collbran: NOAA 1991-2020 normals describe a typical year, not a forecast. Method: /methodology.
Normals record plate
Sheet USC00051743 · Collbran, CO 48°F mean · 15.3" 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 #2,058
- PHOTO-FINISH ≈ Honeoye
- PRCP-DRY 15.3"
- SWING-WIDE 48°F
- COMF-LOW 44/100
- LOAD-HEAT 6,786 HDD
- STN-1 USC00051743
- BOOK-FULL 6/6 fields
Nearest mean-temperature peer: Honeoye, NY (+ 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 CO station list.
- Collbran (this station) 48°F
- Hot Rochester Skyha…, NH 48°F
- Near Honeoye, NY 48°F
- Near Greenland, NH 48°F
- Near Belchertown, MA 48°F
Climate Living Index · Collbran
Collbran: 24/100 · grade F
Collbran publishes 5 of 6 Living Index dimensions (NOAA annual/seasonal normals · NOAA daily multivariate normals); 1 missing weight rescale to 100.
PlainClimate-derived for Collbran, not an official NOAA rating. Rankings still use Comfort Score 44/100 (separate formula). Breakpoints and limits.
| Dimension | Station value | Score |
|---|---|---|
| Annual temperature balance | 47.6°F · 19.9° from 67.5°F | 30/100 · F |
| Precipitation balance | 15.3 in · 19.7 from 35 in | 29/100 · F |
| Normal heat + freeze calendar | 186 calendar days | 22/100 · F |
| Frost-free season | 136 days/year | 16/100 · F |
| Snowfall burden | 59.6 inches/year | 16/100 · F |
Collbran · 2026-08-04 · NOAA NCEI Climate Normals · method · Comfort Score method.
Collbran is a continental Köppen climate: Dfb
Coldest-month mean 23.9°F and warmest-month mean 71.4°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
- 71.4°F
- Coldest month
- 23.9°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 Collbran sits across the climate record
Three NOAA fields for Collbran's primary station, temperature, precipitation, and seasonal swing, are ranked against every station-mapped normal that carries the same field.
- Annual temperature
- Cooler than 70%
- Among 6,861 stations, Collbran sits in the cooler third of annual means.
- Annual precipitation
- Drier than 82%
- Collbran's annual total ranks in the drier third of 6,352 measured normals.
- Seasonal temperature swing
- Wider than 70%
- Warmest-to-coldest month gap for Collbran is large versus 6,861 complete station-years.
How Collbran compares across U.S. station-mapped locations
Collbran's comfort score vs. all station-mapped locations
PlainClimate composite comfort index (1–100), NOAA 1991–2020 normals
44 10th percentile score exceeds 10% 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 | Snow | Freeze Days | 90°F+ Days |
|---|---|---|---|---|---|---|---|
| January | 37°F (3°C) | 11°F (-12°C) | 24°F (-5°C) | 1.0" | 12.5" | 30.8 | 0.0 |
| February | 43°F (6°C) | 17°F (-8°C) | 30°F (-1°C) | 1.1" | 11.5" | 27.4 | 0.0 |
| March | 54°F (12°C) | 26°F (-4°C) | 40°F (4°C) | 1.1" | 7.5" | 26.2 | 0.0 |
| April | 61°F (16°C) | 32°F (0°C) | 46°F (8°C) | 1.5" | 4.1" | 17.0 | 0.0 |
| May | 71°F (22°C) | 40°F (4°C) | 55°F (13°C) | 1.4" | 1.1" | 5.8 | 0.4 |
| June | 83°F (28°C) | 48°F (9°C) | 65°F (18°C) | 0.8" | 0.0" | 0.2 | 7.9 |
| July | 89°F (31°C) | 54°F (12°C) | 71°F (22°C) | 1.5" | 0.0" | 0.0 | 19.2 |
| August | 87°F (30°C) | 53°F (12°C) | 70°F (21°C) | 1.4" | 0.0" | 0.0 | 11.1 |
| September | 78°F (26°C) | 45°F (7°C) | 62°F (16°C) | 1.6" | 0.0" | 1.5 | 1.8 |
| October | 65°F (18°C) | 33°F (0°C) | 49°F (9°C) | 1.6" | 2.2" | 15.4 | 0.0 |
| November | 50°F (10°C) | 23°F (-5°C) | 36°F (2°C) | 1.3" | 7.8" | 27.3 | 0.0 |
| December | 36°F (2°C) | 12°F (-11°C) | 24°F (-4°C) | 1.0" | 12.9" | 30.8 | 0.0 |
The year, day by day
Summer here tops out rather than builds: the warmest normal high is 89°F around July 17, short of 90°F on every date, while 186 dates carry a normal low at or below freezing, the coldest 10°F near January 1.
The freezing stretch
The normal low stays at or below 32°F into April 19, then returns to freezing around October 17, covering 186 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 August 2, when 34% of years recorded at least a hundredth of an inch. The driest is June 15 at 16%. Summed across the calendar, that is about 95 wet dates a year.
The widest day
June 24 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 Collbran.
Where Collbran Stands Nationally
Freezing is routine here by normals standards — the normal low reaches 32°F or colder on about 186 nights a year, more than most ranked stations.
A drier-than-most normal water year — around 15 inches, below what four out of five ranked stations collect.
Collbran earns 2 nationally notable standings (outer quintiles) against 6,860 NOAA 1991–2020 normals stations; only those extremes render.
Monthly Precipitation
Average monthly rainfall and snowfall
Snow: 12.5"
8.0 days with precipitation
Snow: 11.5"
7.8 days with precipitation
Snow: 7.5"
8.0 days with precipitation
Snow: 4.1"
7.8 days with precipitation
Snow: 1.1"
7.7 days with precipitation
4.4 days with precipitation
8.5 days with precipitation
10.0 days with precipitation
8.2 days with precipitation
Snow: 2.2"
8.4 days with precipitation
Snow: 7.8"
7.0 days with precipitation
Snow: 12.9"
8.8 days with precipitation
Collbran spreads its precipitation across the year
Neither half of the year dominates here: June through August take 24% of the annual total and December through February 20%, with neither reaching the 35% that would mark a distinct wet season. Collbran has no dry season to plan around, though it does carry a wide 47.5°F gap between its warmest and coldest month.
The gap between the wettest and driest month still matters: October averages 1.6" and June 0.8". The three wettest months together take 31% 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.
Collbran is dry, and what does fall arrives gently
Only about 95 days a year record measurable precipitation here, 26% of the calendar, and they carry 15.3" 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 August at about 10 wet days; the driest is June at about 4.
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.
Winter brings real snow to Collbran
Collbran averages 59.6 inches of snowfall a year, with December the snowiest month on the normals, spread across roughly 33 days that record measurable snow. That is depth accumulating on the ground, which is why it can exceed the annual precipitation figure: precipitation counts the liquid the snow melts down to, and fresh snow is mostly air.
- Annual snowfall: 59.6 inches of depth.
- Days recording measurable snow: about 33 a year.
- At a rough ten-to-one melt ratio, snow accounts for on the order of 39% of the year's precipitation.
NOAA 1991-2020 normals. The ten-to-one ratio is a convention, not a measurement: real ratios vary with temperature, so treat the share as an order of magnitude rather than an exact split.
Frost Dates & Growing Season
First Fall Freeze
September 30
50% probability date
Last Spring Freeze
May 17
50% probability date
Growing Season
136 days
Heating & Cooling Degree Days
Annual totals indicate energy demand for heating and cooling
Heating Degree Days
6,786
Higher = more heating needed
Cooling Degree Days
481
Higher = more cooling needed
Warmest Month
July
Coldest Month
January
Nationwide similar cities
Other rankable U.S. places outside CO closest to Collbran 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).
- Bend, OR 48°F · 0.0°F off
- Benton, PA 48°F · 0.0°F off
- Bonesteel, SD 48°F · 0.0°F off
- Bonners Ferry, ID 48°F · 0.0°F off
Closest by annual precipitation
Nearest out-of-state peers by annual precipitation (15.3" here), excluding temperature-peer places.
- Savage, MT 15.3" · 0.0" off
- Biddle, MT 15.3" · 0.0" off
- Tatum, NM 15.2" · 0.0" off
- Rapelje, MT 15.2" · 0.0" off
Snow and freeze rhythm
When cold and snow define Collbran
heating led · dry · mid swing
Collbran's energy balance leans toward cold weather: 6,786 annual heating degree days against 481 for cooling. Its 47.5°F seasonal range still makes the monthly rows more useful than the annual average alone.
Only about 136 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.
-
1. Collbran coldest normal
January
Averaging 24°F (-5°C), this month sits below freezing for the month as a whole, not merely overnight.
-
2. Collbran typical freeze period
January through December
The station reports average freezing days from January through December.
-
3. Collbran snow peak
December
Collbran averages 59.6 inches of snow a year, with December the snowiest month on the normals.
Questions about Collbran's climate
How much snow does Collbran get? ▼
How many days above 90°F does Collbran get? ▼
How much energy does heating and cooling require in Collbran? ▼
Data Sources
Data source: NOAA U.S. Climate Normals v1.0.1 (1991-2020). All figures on this page are from Collbran's primary station: COLLBRAN 1WSW (USC00051743). 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 0815605). Match rule for Collbran: 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 Collbran 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.