Gross Rsvr, CO 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 Gross Rsvr's primary NOAA station, GROSS RSVR.
The climate verdict for Gross Rsvr
Gross Rsvr, Colorado has a mixed annual climate rather than one dominant extreme. Its NOAA normal shows an annual average of 44°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.
- 44°F
- annual average temperature (NOAA normal)
- 44/100
- comfort score, above 10% of station-mapped location scores
- 20.3"
- annual precipitation · 99" snow
- 122 days
- frost-free growing season
Gross Rsvr: NOAA 1991-2020 normals describe a typical year, not a forecast. Method: /methodology.
Normals record plate
Sheet USC00053629 · Gross Rsvr, CO 44°F mean · 20.3" 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 ≈ Eastonville
- PRCP-DRY 20.3"
- SWING-MID 36°F
- COMF-LOW 44/100
- LOAD-HEAT 7,765 HDD
- STN-1 USC00053629
- BOOK-FULL 6/6 fields
Nearest mean-temperature peer: Eastonville, CO (+ 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.
- Gross Rsvr (this station) 44°F
- Cold Manassa, CO 44°F
- Hot Del Norte, CO 44°F
- Near Eastonville, CO 44°F
- Near Saguache, CO 44°F
Climate Living Index · Gross Rsvr
Gross Rsvr: 17/100 · grade F
Gross Rsvr publishes 5 of 6 Living Index dimensions (NOAA annual/seasonal normals · NOAA daily multivariate normals); 1 missing weight rescale to 100.
PlainClimate-derived for Gross Rsvr, not an official NOAA rating. Rankings still use Comfort Score 44/100 (separate formula). Breakpoints and limits.
| Dimension | Station value | Score |
|---|---|---|
| Precipitation balance | 20.3 in · 14.7 from 35 in | 48/100 · D |
| Annual temperature balance | 43.9°F · 23.6° from 67.5°F | 16/100 · F |
| Normal heat + freeze calendar | 206 calendar days | 11/100 · F |
| Frost-free season | 122 days/year | 8/100 · F |
| Snowfall burden | 99.1 inches/year | 0/100 · F |
Gross Rsvr · 2026-08-04 · NOAA NCEI Climate Normals · method · Comfort Score method.
Gross Rsvr is a continental Köppen climate: Dfb
Coldest-month mean 28.1°F and warmest-month mean 64.5°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
- 64.5°F
- Coldest month
- 28.1°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 Gross Rsvr sits across the climate record
Three NOAA fields for Gross Rsvr'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, Gross Rsvr sits in the cooler third of annual means.
- Annual precipitation
- Drier than 72%
- Gross Rsvr's annual total ranks in the drier third of 6,352 measured normals.
- Seasonal temperature swing
- Narrower than 79%
- Warmest-to-coldest month gap for Gross Rsvr is compact versus 6,861 complete station-years.
How Gross Rsvr compares across U.S. station-mapped locations
Gross Rsvr'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 | 39°F (4°C) | 17°F (-8°C) | 28°F (-2°C) | 0.7" | 9.4" | 29.4 | 0.0 |
| February | 40°F (4°C) | 17°F (-8°C) | 28°F (-2°C) | 0.9" | 14.0" | 26.5 | 0.0 |
| March | 47°F (8°C) | 22°F (-5°C) | 35°F (2°C) | 1.9" | 21.0" | 27.5 | 0.0 |
| April | 52°F (11°C) | 27°F (-3°C) | 40°F (4°C) | 2.7" | 19.8" | 23.8 | 0.0 |
| May | 61°F (16°C) | 35°F (2°C) | 48°F (9°C) | 2.9" | 3.9" | 9.6 | 0.0 |
| June | 73°F (23°C) | 44°F (6°C) | 58°F (15°C) | 1.9" | 0.1" | 0.4 | 1.0 |
| July | 79°F (26°C) | 50°F (10°C) | 65°F (18°C) | 2.0" | 0.0" | 0.0 | 1.0 |
| August | 77°F (25°C) | 48°F (9°C) | 62°F (17°C) | 2.1" | 0.0" | 0.1 | 0.2 |
| September | 70°F (21°C) | 41°F (5°C) | 55°F (13°C) | 2.0" | 0.9" | 2.0 | 0.2 |
| October | 57°F (14°C) | 31°F (0°C) | 44°F (7°C) | 1.4" | 6.9" | 15.7 | 0.0 |
| November | 47°F (8°C) | 24°F (-5°C) | 35°F (2°C) | 1.0" | 12.0" | 24.5 | 0.0 |
| December | 40°F (4°C) | 18°F (-8°C) | 29°F (-2°C) | 0.8" | 11.1" | 28.8 | 0.0 |
The year, day by day
Summer here tops out rather than builds: the warmest normal high is 80°F around July 18, short of 90°F on every date, while 206 dates carry a normal low at or below freezing, the coldest 16°F near February 5.
The freezing stretch
The normal low stays at or below 32°F into May 6, then returns to freezing around October 14, covering 206 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 3, when 37% of years recorded at least a hundredth of an inch. The driest is January 10 at 15%. Summed across the calendar, that is about 88 wet dates a year.
The widest day
June 28 carries the biggest normal gap between afternoon and dawn, 31°F between the normal high and the normal low.
Look up any date
Any date's 1991–2020 normal for Gross Rsvr.
Where Gross Rsvr Stands Nationally
Winters bite deep and often: the normal nightly low dips to freezing or below on around 206 nights a year, placing this among the most frost-prone tenth of ranked stations.
Gross Rsvr 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 and snowfall
Snow: 9.4"
4.7 days with precipitation
Snow: 14.0"
5.6 days with precipitation
Snow: 21.0"
6.3 days with precipitation
Snow: 19.8"
8.4 days with precipitation
Snow: 3.9"
10.5 days with precipitation
Snow: 0.1"
8.1 days with precipitation
10.2 days with precipitation
10.9 days with precipitation
Snow: 0.9"
7.3 days with precipitation
Snow: 6.9"
6.0 days with precipitation
Snow: 12.0"
4.9 days with precipitation
Snow: 11.1"
4.9 days with precipitation
Gross Rsvr spreads its precipitation across the year
Neither half of the year dominates here: June through August take 30% of the annual total and December through February 12%, with neither reaching the 35% that would mark a distinct wet season. Gross Rsvr has no dry season to plan around, though it does carry a 36.4°F seasonal spread.
The gap between the wettest and driest month still matters: May averages 2.9" and January 0.7". The three wettest months together take 38% 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.
How Gross Rsvr's precipitation splits across the calendar
About 88 days a year record measurable precipitation here, carrying 20.3" between them, or roughly 0.23 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.
Winter brings real snow to Gross Rsvr
Gross Rsvr averages 99.1 inches of snowfall a year, with March the snowiest month on the normals, spread across roughly 30 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: 99.1 inches of depth.
- Days recording measurable snow: about 30 a year.
- At a rough ten-to-one melt ratio, snow accounts for on the order of 49% 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 23
50% probability date
Last Spring Freeze
May 24
50% probability date
Growing Season
122 days
Heating & Cooling Degree Days
Annual totals indicate energy demand for heating and cooling
Heating Degree Days
7,765
Higher = more heating needed
Cooling Degree Days
90
Higher = more cooling needed
Warmest Month
July
Coldest Month
January
Nationwide similar cities
Other rankable U.S. places outside CO closest to Gross Rsvr 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
- Carter, MT 44°F · 0.0°F off
- Colton, NY 44°F · 0.0°F off
- Dayton, WY 44°F · 0.0°F off
Closest by annual precipitation
Nearest out-of-state peers by annual precipitation (20.3" here), excluding temperature-peer places.
- Northport, WA 20.3" · 0.0" off
- Olney, MT 20.3" · 0.0" off
- Brewster, KS 20.3" · 0.0" off
- Eureka, SD 20.3" · 0.0" off
Snow and freeze rhythm
When cold and snow define Gross Rsvr
heating led · moderate · mid swing
Gross Rsvr's energy balance leans toward cold weather: 7,765 annual heating degree days against 90 for cooling. Its 36.4°F seasonal range still makes the monthly rows more useful than the annual average alone.
Only about 122 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. Gross Rsvr coldest normal
January
The monthly mean of 28°F (-2°C) sits near freezing, so cold nights and above-freezing afternoons share the same month.
-
2. Gross Rsvr typical freeze period
January through December
The station reports average freezing days from January through December.
-
3. Gross Rsvr snow peak
March
Gross Rsvr averages 99.1 inches of snow a year, with March the snowiest month on the normals.
Questions about Gross Rsvr's climate
How much snow does Gross Rsvr get? ▼
How cold does Gross Rsvr get in winter? ▼
How much energy does heating and cooling require in Gross Rsvr? ▼
Data Sources
Data source: NOAA U.S. Climate Normals v1.0.1 (1991-2020). All figures on this page are from Gross Rsvr's primary station: GROSS RSVR (USC00053629). 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 Gross Rsvr; 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 Gross Rsvr 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.