Ellicott, CO Climate: Temperature & Rain by Month
Annual temperature and rainfall from NOAA NCEI's 1991–2020 normals →; comfort score computed by PlainClimate
30-year climate normals (1991-2020) from Ellicott's primary NOAA station, ELLICOTT 7S.
The climate verdict for Ellicott
Dryness leads the climate profile for Ellicott, Colorado, with 15.0 inches of precipitation a year. NOAA records an annual average of 51°F. At 52/100 (moderate) the climate comfort score falls in the bottom third of the station-mapped U.S. score corpus, exceeding only 24% of scores.
- 51°F
- average temperature, NOAA 1991-2020 normal
- 52/100
- comfort score, above 24% of station-mapped location scores
- 15.0"
- yearly precipitation total
- 150 days
- frost-free growing season
Ellicott: NOAA 1991-2020 normals describe a typical year, not a forecast. Method: /methodology.
Normals record plate
Sheet USC00052668 · Ellicott, CO 51°F mean · 15.0" precip
TEMP-COOL · RANK-MID · PHOTO-FINISH · PRCP-DRY · SWING-MID · COMF-LOW · LOAD-HEAT · STN-1 · BOOK-FULL
- TEMP-COOL 51°F
- RANK-MID #2,950
- PHOTO-FINISH ≈ Lewisburg
- PRCP-DRY 15.0"
- SWING-MID 41°F
- COMF-LOW 52/100
- LOAD-HEAT 5,773 HDD
- STN-1 USC00052668
- BOOK-FULL 6/6 fields
Nearest mean-temperature peer: Lewisburg, WV (+ 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.
- Ellicott (this station) 51°F
- Cold Montebello Fish…, VA 51°F
- Hot Lind, WA 51°F
- Near Lewisburg, WV 51°F
- Near Yakima Air Term…, WA 51°F
Climate Living Index · Ellicott
Ellicott: 35/100 · grade F
Ellicott publishes 4 of 6 Living Index dimensions (NOAA annual/seasonal normals · NOAA daily multivariate normals); 2 missing weights rescale to 100.
PlainClimate-derived for Ellicott, not an official NOAA rating. Rankings still use Comfort Score 52/100 (separate formula). Breakpoints and limits.
| Dimension | Station value | Score |
|---|---|---|
| Annual temperature balance | 50.7°F · 16.8° from 67.5°F | 43/100 · D |
| Normal heat + freeze calendar | 168 calendar days | 34/100 · F |
| Precipitation balance | 15.0 in · 20.0 from 35 in | 28/100 · F |
| Frost-free season | 150 days/year | 25/100 · F |
Ellicott · 2026-08-04 · NOAA NCEI Climate Normals · method · Comfort Score method.
Ellicott's normals sit in a dry climate class: BSk
Precipitation is low relative to temperature but above true desert thresholds: cold semi-arid steppe (BSk). Class BSk is the Peel et al. (2007) label for this station's monthly mean temperature and precipitation normals: dry (arid or semi-arid), specifically cold semi-arid steppe.
- Köppen code
- BSk
- Group
- Dry (arid or semi-arid)
- Warmest month
- 71.4°F
- Coldest month
- 30.5°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 Ellicott sits across the climate record
Three NOAA fields for Ellicott's primary station, temperature, precipitation, and seasonal swing, are ranked against every station-mapped normal that carries the same field.
- Annual temperature
- 43rd percentile warmth
- Mid-pack annual mean versus 6,861 station normals.
- Annual precipitation
- Drier than 83%
- Ellicott's annual total ranks in the drier third of 6,352 measured normals.
- Seasonal temperature swing
- 40th percentile swing
- Typical seasonal amplitude versus 6,861 complete station-years.
How Ellicott compares across U.S. station-mapped locations
Ellicott's comfort score vs. all station-mapped locations
PlainClimate composite comfort index (1–100), NOAA 1991–2020 normals
52 24th percentile score exceeds 24% 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%). Below this entry.
- 50–60: 1,329 station-mapped locations (21%). This entry sits in this band.
- 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 | 46°F (8°C) | 15°F (-10°C) | 31°F (-1°C) | 0.3" | 30.7 | 0.0 |
| February | 49°F (10°C) | 19°F (-7°C) | 34°F (1°C) | 0.3" | 25.3 | 0.0 |
| March | 58°F (14°C) | 26°F (-3°C) | 42°F (5°C) | 0.8" | 22.1 | 0.0 |
| April | 65°F (18°C) | 35°F (1°C) | 50°F (10°C) | 1.4" | 11.8 | 0.0 |
| May | 74°F (24°C) | 44°F (7°C) | 59°F (15°C) | 1.9" | 3.8 | 0.8 |
| June | 84°F (29°C) | 49°F (10°C) | 66°F (19°C) | 1.7" | 0.2 | 9.5 |
| July | 87°F (31°C) | 55°F (13°C) | 71°F (22°C) | 3.0" | 0.0 | 15.7 |
| August | 86°F (30°C) | 56°F (13°C) | 71°F (22°C) | 2.9" | 0.0 | 11.4 |
| September | 79°F (26°C) | 46°F (8°C) | 63°F (17°C) | 1.3" | 0.5 | 5.0 |
| October | 67°F (19°C) | 35°F (2°C) | 51°F (10°C) | 0.8" | 12.2 | 0.1 |
| November | 56°F (13°C) | 24°F (-4°C) | 40°F (4°C) | 0.4" | 23.5 | 0.0 |
| December | 47°F (8°C) | 16°F (-9°C) | 32°F (0°C) | 0.2" | 29.5 | 0.0 |
The year, day by day
Summer here tops out rather than builds: the warmest normal high is 88°F around July 22, short of 90°F on every date, while 168 dates carry a normal low at or below freezing, the coldest 14°F near January 5.
The freezing stretch
The normal low stays at or below 32°F into April 7, then returns to freezing around October 23, covering 168 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.
The widest day
June 20 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 Ellicott.
Where Ellicott Stands Nationally
A drier-than-most normal water year — around 15 inches, below what four out of five ranked stations collect.
Daily temperature swings run wider than most of the country, peaking near 35°F between the normal high and low.
Ellicott earns 2 nationally notable standings (outer quintiles) against 6,860 NOAA 1991–2020 normals stations; only those extremes render.
Monthly Precipitation
Average monthly rainfall
Ellicott runs a summer-peaked wet season
51% of Ellicott'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 3.0", on a 40.9°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, May, taking 52% of the annual total between them.
- Driest month: December at 0.2".
- Winter share: 5% 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.
Frost Dates & Growing Season
First Fall Freeze
October 3
50% probability date
Last Spring Freeze
May 6
50% probability date
Growing Season
150 days
Heating & Cooling Degree Days
Annual totals indicate energy demand for heating and cooling
Heating Degree Days
5,773
Higher = more heating needed
Cooling Degree Days
581
Higher = more cooling needed
Warmest Month
July
Coldest Month
January
Nationwide similar cities
Other rankable U.S. places outside CO closest to Ellicott 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 (51°F here).
- Decatur, IN 51°F · 0.0°F off
- Fredonia, NY 51°F · 0.0°F off
- Fremont, OH 51°F · 0.0°F off
- Gibson City, IL 51°F · 0.0°F off
Closest by annual precipitation
Nearest out-of-state peers by annual precipitation (15.0" here), excluding temperature-peer places.
- Yoder, WY 15.0" · 0.0" off
- Polson, MT 15.0" · 0.0" off
- Santa Rosa, NM 15.0" · 0.0" off
- Bickleton, WA 15.0" · 0.0" off
Scarce-water calendar
Where Ellicott's limited precipitation lands
heating led · dry · mid swing
Ellicott's energy balance leans toward cold weather: 5,773 annual heating degree days against 581 for cooling. Its 40.9°F seasonal range still makes the monthly rows more useful than the annual average alone.
Ellicott's frost-free season lasts about 150 days, a middle-length window whose endpoints matter more than the annual average. It describes freeze probability, not year-specific planting conditions.
July and January mark the typical warm and cold ends of the calendar in Ellicott's middle-range seasonal profile. The measured spread is 40.9°F. The annual average is 51°F. Neither the annual mean nor one extreme month represents the full calendar on its own.
Ellicott's cold-season load does not imply a wet climate. Annual precipitation is 15.0 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.
Ellicott wettest normal
July
July concentrates the scarce annual total (15.0 inches).
Ellicott driest normal
December
December is typically driest; arid stations are defined by when water is absent, not by a four-season grid.
Questions about Ellicott's climate
How dry is Ellicott? ▼
How many days above 90°F does Ellicott get? ▼
How much energy does heating and cooling require in Ellicott? ▼
Data Sources
Data source: NOAA U.S. Climate Normals v1.0.1 (1991-2020). All figures on this page are from Ellicott's primary station: ELLICOTT 7S (USC00052668). 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 a census-designated place (GEOID 0824235), not an incorporated municipality. Match rule for Ellicott: 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 Ellicott 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.