Twin Lakes Rsvr, 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 Twin Lakes Rsvr's primary NOAA station, TWIN LAKES RSVR.
The climate verdict for Twin Lakes Rsvr
Dryness leads the climate profile for Twin Lakes Rsvr, Colorado, with 10.3 inches of precipitation a year. NOAA records an annual average of 38°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.
- 38°F
- yearly average temperature, NOAA normal
- 40/100
- comfort score, above 6% of station-mapped location scores
- 10.3"
- precipitation, annual total
- 86 days
- frost-free growing season
Twin Lakes Rsvr: NOAA 1991-2020 normals describe a typical year, not a forecast. Method: /methodology.
Normals record plate
Sheet USC00058501 · Twin Lakes Rsvr, CO 38°F mean · 10.3" precip
TEMP-COLD · RANK-COOL · PHOTO-FINISH · PRCP-ARID · SWING-MID · COMF-LOW · LOAD-HEAT · STN-1 · BOOK-FULL
- TEMP-COLD 38°F
- RANK-COOL #206
- PHOTO-FINISH ≈ Iliamna
- PRCP-ARID 10.3"
- SWING-MID 39°F
- COMF-LOW 40/100
- LOAD-HEAT 9,935 HDD
- STN-1 USC00058501
- BOOK-FULL 6/6 fields
Nearest mean-temperature peer: Iliamna, AK (+ 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.
- Twin Lakes Rsvr (this station) 38°F
- Cold Anchorage, AK 38°F
- Hot Wise Rvr, MT 38°F
- Near Iliamna, AK 38°F
- Near Gunnison, CO 38°F
Climate Living Index · Twin Lakes Rsvr
Twin Lakes Rsvr: 3/100 · grade F
Twin Lakes Rsvr publishes 4 of 6 Living Index dimensions (NOAA annual/seasonal normals · NOAA daily multivariate normals); 2 missing weights rescale to 100.
PlainClimate-derived for Twin Lakes Rsvr, not an official NOAA rating. Rankings still use Comfort Score 40/100 (separate formula). Breakpoints and limits.
| Dimension | Station value | Score |
|---|---|---|
| Precipitation balance | 10.3 in · 24.7 from 35 in | 13/100 · F |
| Annual temperature balance | 37.7°F · 29.8° from 67.5°F | 0/100 · F |
| Frost-free season | 86 days/year | 0/100 · F |
| Normal heat + freeze calendar | 240 calendar days | 0/100 · F |
Twin Lakes Rsvr · 2026-08-04 · NOAA NCEI Climate Normals · method · Comfort Score method.
Twin Lakes Rsvr is a continental Köppen climate: Dfc
Coldest-month mean 19.4°F and warmest-month mean 58.6°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
- 58.6°F
- Coldest month
- 19.4°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 Twin Lakes Rsvr sits across the climate record
Three NOAA fields for Twin Lakes 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 97%
- Among 6,861 stations, Twin Lakes Rsvr sits in the cooler third of annual means.
- Annual precipitation
- Drier than 93%
- Twin Lakes Rsvr's annual total ranks in the drier third of 6,352 measured normals.
- Seasonal temperature swing
- 32nd percentile swing
- Typical seasonal amplitude versus 6,861 complete station-years.
How Twin Lakes Rsvr compares across U.S. station-mapped locations
Twin Lakes Rsvr'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 | 34°F (1°C) | 5°F (-15°C) | 19°F (-7°C) | 0.4" | 31.0 | 0.0 |
| February | 35°F (2°C) | 5°F (-15°C) | 20°F (-7°C) | 0.6" | 27.9 | 0.0 |
| March | 41°F (5°C) | 13°F (-10°C) | 27°F (-3°C) | 0.7" | 30.8 | 0.0 |
| April | 46°F (8°C) | 21°F (-6°C) | 34°F (1°C) | 0.8" | 28.7 | 0.0 |
| May | 58°F (14°C) | 30°F (-1°C) | 44°F (7°C) | 0.9" | 21.9 | 0.0 |
| June | 70°F (21°C) | 37°F (3°C) | 53°F (12°C) | 0.7" | 4.8 | 0.0 |
| July | 74°F (24°C) | 43°F (6°C) | 59°F (15°C) | 1.7" | 0.1 | 0.0 |
| August | 71°F (22°C) | 42°F (5°C) | 57°F (14°C) | 1.6" | 0.3 | 0.0 |
| September | 65°F (18°C) | 35°F (2°C) | 50°F (10°C) | 1.1" | 8.4 | 0.0 |
| October | 53°F (12°C) | 26°F (-3°C) | 40°F (4°C) | 0.8" | 26.0 | 0.0 |
| November | 42°F (6°C) | 17°F (-8°C) | 30°F (-1°C) | 0.5" | 29.3 | 0.0 |
| December | 34°F (1°C) | 8°F (-14°C) | 21°F (-6°C) | 0.5" | 30.9 | 0.0 |
The year, day by day
Summer here tops out rather than builds: the warmest normal high is 75°F around July 17, short of 90°F on every date, while 240 dates carry a normal low at or below freezing, the coldest 4°F near February 5.
The freezing stretch
The normal low stays at or below 32°F into May 24, then returns to freezing around September 28, covering 240 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 29, when 41% of years recorded at least a hundredth of an inch. The driest is January 1 at 11%. Summed across the calendar, that is about 79 wet dates a year.
The widest day
June 21 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 Twin Lakes Rsvr.
Where Twin Lakes Rsvr Stands Nationally
Winters bite deep and often: the normal nightly low dips to freezing or below on around 240 nights a year, placing this among the most frost-prone tenth of ranked stations.
Aridity defines the water calendar: about 10 inches in a normal year lands this among the driest tenth of ranked stations.
Twin Lakes 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
4.3 days with precipitation
5.0 days with precipitation
5.7 days with precipitation
6.1 days with precipitation
7.7 days with precipitation
7.1 days with precipitation
11.6 days with precipitation
12.3 days with precipitation
6.7 days with precipitation
5.4 days with precipitation
3.9 days with precipitation
3.8 days with precipitation
Twin Lakes Rsvr runs a summer-peaked wet season
38% of Twin Lakes Rsvr'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 July at 1.7", on a 39.2°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: July, August, September, taking 42% of the annual total between them.
- Driest month: January at 0.4".
- Winter share: 15% 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.
Twin Lakes Rsvr is dry, and what does fall arrives gently
Only about 80 days a year record measurable precipitation here, 22% of the calendar, and they carry 10.3" between them. At roughly 0.13 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 12 wet days; the driest is December 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.
Frost Dates & Growing Season
First Fall Freeze
September 10
50% probability date
Last Spring Freeze
June 16
50% probability date
Growing Season
86 days
Heating & Cooling Degree Days
Annual totals indicate energy demand for heating and cooling
Heating Degree Days
9,935
Higher = more heating needed
Cooling Degree Days
2
Higher = more cooling needed
Warmest Month
July
Coldest Month
January
Nationwide similar cities
Other rankable U.S. places outside CO closest to Twin Lakes 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 (38°F here).
- Big Sky, MT 38°F · 0.0°F off
- Blackduck, MN 38°F · 0.0°F off
- Goodridge, MN 38°F · 0.0°F off
- Iliamna, AK 38°F · 0.0°F off
Closest by annual precipitation
Nearest out-of-state peers by annual precipitation (10.3" here), excluding temperature-peer places.
- San Simon, AZ 10.3" · 0.0" off
- Van Horn, TX 10.3" · 0.0" off
- Visalia, CA 10.3" · 0.0" off
- Prineville, OR 10.3" · 0.0" off
Scarce-water calendar
Where Twin Lakes Rsvr's limited precipitation lands
heating led · dry · mid swing
Twin Lakes Rsvr's energy balance leans toward cold weather: 9,935 annual heating degree days against 2 for cooling. Its 39.2°F seasonal range still makes the monthly rows more useful than the annual average alone.
Only about 86 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 Twin Lakes Rsvr's middle-range seasonal profile. The measured spread is 39.2°F. The annual average is 38°F. Neither the annual mean nor one extreme month represents the full calendar on its own.
Twin Lakes Rsvr's cold-season load does not imply a wet climate. Annual precipitation is 10.3 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.
Twin Lakes Rsvr wettest normal
July
July concentrates the scarce annual total (10.3 inches).
Twin Lakes Rsvr driest normal
January
January is typically driest; arid stations are defined by when water is absent, not by a four-season grid.
Questions about Twin Lakes Rsvr's climate
How dry is Twin Lakes Rsvr? ▼
How cold does Twin Lakes Rsvr get in winter? ▼
How much energy does heating and cooling require in Twin Lakes Rsvr? ▼
Data Sources
Data source: NOAA U.S. Climate Normals v1.0.1 (1991-2020). All figures on this page are from Twin Lakes Rsvr's primary station: TWIN LAKES RSVR (USC00058501). 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 Twin Lakes 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 Twin Lakes 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.