Santa Maria Rsvr, CO Climate: Temperature & Rain by Month
Explore NOAA NCEI's 1991–2020 climate normals → and a clearly labeled PlainClimate comfort calculation
30-year climate normals (1991-2020) from Santa Maria Rsvr's primary NOAA station, SANTA MARIA RSVR.
The climate verdict for Santa Maria Rsvr
Dryness leads the climate profile for Santa Maria Rsvr, Colorado, with 17.6 inches of precipitation a year. NOAA records an annual average of 36°F. July is the warmest month at 56°F and December the coldest at 18°F.
- 36°F
- annual average temperature (NOAA normal)
- 17.6"
- precipitation, annual total
Santa Maria Rsvr: NOAA 1991-2020 normals describe a typical year, not a forecast. Method: /methodology.
Normals record plate
Sheet USC00057450 · Santa Maria Rsvr, CO 36°F mean · 17.6" precip
TEMP-COLD · RANK-COOL · PHOTO-FINISH · PRCP-DRY · SWING-MID · COMF-UNK · LOAD-HEAT · STN-1 · BOOK-FULL
- TEMP-COLD 36°F
- RANK-COOL #137
- PHOTO-FINISH ≈ Brian Head
- PRCP-DRY 17.6"
- SWING-MID 38°F
- COMF-UNK Comfort n/a
- LOAD-HEAT 10,456 HDD
- STN-1 USC00057450
- BOOK-FULL 5/6 fields
Nearest mean-temperature peer: Brian Head, UT (+ 0.2 °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.
- Hot King Salmon, AK 37°F
- Near Brian Head, UT 37°F
- Near Sutton, AK 37°F
- Santa Maria Rsvr (this station) 36°F
- Cold Fraser, CO 36°F
Climate Living Index · Santa Maria Rsvr
Santa Maria Rsvr: 9/100 · grade F
Santa Maria Rsvr publishes 3 of 6 Living Index dimensions (NOAA annual/seasonal normals · NOAA daily multivariate normals); 3 missing weights rescale to 100.
PlainClimate-derived for Santa Maria Rsvr, not an official NOAA rating. Breakpoints and limits.
| Dimension | Station value | Score |
|---|---|---|
| Precipitation balance | 17.6 in · 17.4 from 35 in | 38/100 · F |
| Annual temperature balance | 36.3°F · 31.2° from 67.5°F | 0/100 · F |
| Normal heat + freeze calendar | 262 calendar days | 0/100 · F |
Santa Maria Rsvr · 2026-08-04 · NOAA NCEI Climate Normals · method .
Santa Maria Rsvr is a continental Köppen climate: Dfc
Coldest-month mean 18.0°F and warmest-month mean 56.4°F place this station in continental, no dry season, cool summer climates (Dfc). Class Dfc is the Peel et al. (2007) label for this station's monthly mean temperature and precipitation normals: continental, specifically continental, no dry season, cool summer.
- Köppen code
- Dfc
- Group
- Continental
- Warmest month
- 56.4°F
- Coldest month
- 18.0°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 Santa Maria Rsvr sits across the climate record
Three NOAA fields for Santa Maria 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 98%
- Among 6,861 stations, Santa Maria Rsvr sits in the cooler third of annual means.
- Annual precipitation
- Drier than 77%
- Santa Maria Rsvr's annual total ranks in the drier third of 6,352 measured normals.
- Seasonal temperature swing
- Narrower than 71%
- Warmest-to-coldest month gap for Santa Maria Rsvr is compact versus 6,861 complete station-years.
Monthly Temperatures
Average daily high and low temperatures by month
| Month | Avg High | Avg Low | Mean | Precip | Freeze Days | 90°F+ Days |
|---|---|---|---|---|---|---|
| January | 35°F (2°C) | 2°F (-17°C) | 18°F (-8°C) | 1.1" | 31.0 | 0.0 |
| February | 36°F (2°C) | 3°F (-16°C) | 20°F (-7°C) | 1.1" | 28.0 | 0.0 |
| March | 42°F (5°C) | 12°F (-11°C) | 27°F (-3°C) | 1.1" | 31.0 | 0.0 |
| April | 48°F (9°C) | 19°F (-7°C) | 33°F (1°C) | 1.6" | 29.8 | 0.0 |
| May | 58°F (14°C) | 27°F (-3°C) | 42°F (6°C) | 1.0" | 27.4 | 0.0 |
| June | 68°F (20°C) | 34°F (1°C) | 51°F (11°C) | 0.8" | 10.0 | 0.0 |
| July | 73°F (23°C) | 40°F (5°C) | 56°F (14°C) | 2.3" | 0.5 | 0.0 |
| August | 70°F (21°C) | 39°F (4°C) | 54°F (12°C) | 3.0" | 1.5 | 0.0 |
| September | 64°F (18°C) | 33°F (0°C) | 49°F (9°C) | 2.1" | 14.5 | 0.0 |
| October | 55°F (13°C) | 23°F (-5°C) | 39°F (4°C) | 1.5" | 28.9 | 0.0 |
| November | 43°F (6°C) | 13°F (-10°C) | 28°F (-2°C) | 0.9" | 30.0 | 0.0 |
| December | 34°F (1°C) | 2°F (-17°C) | 18°F (-8°C) | 1.1" | 31.0 | 0.0 |
The year, day by day
Summer here tops out rather than builds: the warmest normal high is 73°F around July 12, short of 90°F on every date, while 262 dates carry a normal low at or below freezing, the coldest 0°F near December 24.
The freezing stretch
The normal low stays at or below 32°F into June 6, then returns to freezing around September 19, covering 262 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 July 26, when 56% of years recorded at least a hundredth of an inch. The driest is November 8 at 16%. Summed across the calendar, that is about 102 wet dates a year.
The widest day
June 19 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 Santa Maria Rsvr.
Where Santa Maria Rsvr Stands Nationally
Winters bite deep and often: the normal nightly low dips to freezing or below on around 262 nights a year, placing this among the most frost-prone tenth of ranked stations.
Daily temperature swings run wider than most of the country, peaking near 34°F between the normal high and low.
Santa Maria Rsvr earns 2 nationally notable standings (outer quintiles) against 6,860 NOAA 1991–2020 normals stations; only those extremes render.
Monthly Precipitation
Average monthly rainfall
6.2 days with precipitation
6.9 days with precipitation
6.3 days with precipitation
6.7 days with precipitation
7.8 days with precipitation
5.8 days with precipitation
16.2 days with precipitation
15.3 days with precipitation
10.6 days with precipitation
6.8 days with precipitation
5.0 days with precipitation
7.9 days with precipitation
Santa Maria Rsvr spreads its precipitation across the year
Neither half of the year dominates here: June through August take 35% of the annual total and December through February 19%, with neither reaching the 35% that would mark a distinct wet season. Santa Maria Rsvr has no dry season to plan around, though it does carry a 38.4°F seasonal spread.
The gap between the wettest and driest month still matters: August averages 3.0" and June 0.8". The three wettest months together take 42% 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.
Santa Maria Rsvr is dry, and what does fall arrives gently
Only about 101 days a year record measurable precipitation here, 28% of the calendar, and they carry 17.6" between them. At roughly 0.17 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 July at about 16 wet days; the driest is November at about 5.
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
N/A
50% probability date
Last Spring Freeze
N/A
50% probability date
Heating & Cooling Degree Days
Annual totals indicate energy demand for heating and cooling
Heating Degree Days
10,456
Higher = more heating needed
Cooling Degree Days
0
Higher = more cooling needed
Warmest Month
July
Coldest Month
December
Nationwide similar cities
Other rankable U.S. places outside CO closest to Santa Maria 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 (36°F here).
- Lakeview, MT 36°F · 0.1°F off
- Rolette, ND 36°F · 0.2°F off
- Atlantic City, WY 37°F · 0.2°F off
- Brian Head, UT 37°F · 0.2°F off
Closest by annual precipitation
Nearest out-of-state peers by annual precipitation (17.6" here), excluding temperature-peer places.
- Big Springs, NE 17.6" · 0.0" off
- Dickinson, ND 17.6" · 0.0" off
- Lodgepole, NE 17.6" · 0.0" off
- New Harmony, UT 17.6" · 0.0" off
Data-derived climate profile
How Santa Maria Rsvr's climate pattern fits together
heating led · dry · mid swing
Santa Maria Rsvr's energy balance leans toward cold weather: 10,456 annual heating degree days against 0 for cooling. Its 38.4°F seasonal range still makes the monthly rows more useful than the annual average alone.
A frost-free growing-season length is not available for Santa Maria Rsvr. That missing field is kept separate from the observed temperature and precipitation record rather than filled from a regional estimate.
July and December mark the typical warm and cold ends of the calendar in Santa Maria Rsvr's middle-range seasonal profile. The measured spread is 38.4°F. The annual average is 36°F. Neither the annual mean nor one extreme month represents the full calendar on its own.
Santa Maria Rsvr's cold-season load does not imply a wet climate. Annual precipitation is 17.6 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 Santa Maria Rsvr'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 Santa Maria Rsvr, not an official NOAA class or a year-ahead forecast.
Questions about Santa Maria Rsvr's climate
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Data Sources
Data source: NOAA U.S. Climate Normals v1.0.1 (1991-2020). All figures on this page are from Santa Maria Rsvr's primary station: SANTA MARIA RSVR (USC00057450). 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 Santa Maria 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 Santa Maria 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.