Evergreen, Colorado climate: Normal weather by month, frost dates and records
Evergreen's normal year runs from 13°F December nights to 81°F July afternoons, with 18.6 inches of precipitation and 81 inches of snow a year. (NOAA 1991-2020 normals)
In metric: a yearly mean of 7.1°C, December lows of −11°C, July highs of 27°C, 473 mm of precipitation a year.
- NOAA stationEvergreen
- Station IDUSC00052790
- Location39.64°N 105.31°W
- Elevation6,985 ft (2,129 m)
- Population (census place)8,643
On October 23, the normal high in Evergreen is 59°F and the normal low 27°F, and the chance of measurable rain or snow is 18%.
Normals describe a typical year at the station, not a forecast. The National Weather Service forecast for Evergreen.
- Jan 44° 13°
- Feb 44° 13°
- Mar 51° 21°
- Apr 56° 27°
- May 64° 36°
- Jun 76° 43°
- Jul 81° 49°
- Aug 79° 47°
- Sep 73° 40°
- Oct 61° 29°
- Nov 51° 20°
- Dec 44° 13°
Each month: normal high (large) and low, °F. Fill: the month's normal mean, colder blue to hotter red.
What is the weather like in Evergreen each month?
July is the warmest month, with normal highs of 81°F; December the coldest, with normal lows of 13°F. The most precipitation falls in May (2.49 in), the least in January (0.63 in).
Each month has its own page with the day-by-day normals, the month's records and its recent years:
| Month | High | Low | Mean | Precip. | Snow | Wet days | 90°F days | Freezing nights | Daylight |
|---|---|---|---|---|---|---|---|---|---|
| January | 44°F | 13°F | 28.4°F | 0.63 | 8.8 | 5 | <1 | 31 | 9 h 40 min |
| February | 44°F | 13°F | 28.9°F | 0.86 | 11.4 | 6 | <1 | 28 | 10 h 40 min |
| March | 51°F | 21°F | 35.9°F | 1.76 | 17.0 | 7 | <1 | 30 | 11 h 50 min |
| April | 56°F | 27°F | 41.2°F | 2.37 | 14.9 | 8 | <1 | 26 | 13 h 10 min |
| May | 64°F | 36°F | 49.7°F | 2.49 | 2.7 | 10 | <1 | 10 | 14 h 20 min |
| June | 76°F | 43°F | 59.3°F | 1.73 | 0.0 | 9 | 1 | 1 | 15 h |
| July | 81°F | 49°F | 65.1°F | 2.20 | 0.0 | 12 | 3 | <1 | 14 h 40 min |
| August | 79°F | 47°F | 63.2°F | 2.30 | 0.0 | 12 | 1 | <1 | 13 h 50 min |
| September | 73°F | 40°F | 56.0°F | 1.55 | 1.1 | 8 | <1 | 5 | 12 h 30 min |
| October | 61°F | 29°F | 44.9°F | 1.21 | 6.5 | 6 | <1 | 24 | 11 h 10 min |
| November | 51°F | 20°F | 35.6°F | 0.81 | 10.4 | 5 | <1 | 29 | 10 h |
| December | 44°F | 13°F | 28.3°F | 0.71 | 8.0 | 5 | <1 | 31 | 9 h 20 min |
| Year (annual) | 60°F | 29°F | 44.7°F | 18.62 | 80.8 | 91 | 6 | 215 |
The same normals in °C and millimetres
| Month | High | Low | Mean | Precip. | Snow |
|---|---|---|---|---|---|
| January | 7°C | −11°C | −2.0°C | 16 mm | 22 cm |
| February | 7°C | −10°C | −1.7°C | 22 mm | 29 cm |
| March | 11°C | −6°C | 2.2°C | 45 mm | 43 cm |
| April | 13°C | −3°C | 5.1°C | 60 mm | 38 cm |
| May | 18°C | 2°C | 9.8°C | 63 mm | 7 cm |
| June | 24°C | 6°C | 15.2°C | 44 mm | 0 cm |
| July | 27°C | 9°C | 18.4°C | 56 mm | 0 cm |
| August | 26°C | 8°C | 17.3°C | 58 mm | 0 cm |
| September | 23°C | 4°C | 13.3°C | 39 mm | 3 cm |
| October | 16°C | −2°C | 7.2°C | 31 mm | 17 cm |
| November | 11°C | −7°C | 2.0°C | 21 mm | 26 cm |
| December | 7°C | −11°C | −2.1°C | 18 mm | 20 cm |
Source: NOAA NCEI 1991-2020 monthly normals, station USC00052790; annual normals. Wet days: 0.01 inch or more; 90°F days and freezing nights: NOAA's day counts. Daylight: sunrise to sunset on the 15th, computed from the latitude.
When is the best weather to visit Evergreen?
Normal highs sit between 65°F and 85°F in June, July, August and September. Of those, September has the fewest days with rain (8).
That is a measurement, not a recommendation: it counts the months whose normal afternoon high sits between 65°F and 85°F, where a light layer is enough by day.
Source: NOAA NCEI 1991-2020 monthly normals, station USC00052790.
When is the last frost in Evergreen?
In Evergreen, the last spring frost (32°F) comes after May 23 in half of years and after June 10 in one year in ten; the first autumn frost comes before September 22 in half of years and before September 6 in one year in ten.
Frost-free in half of yearsFrost in 1 to 9 years out of 10Frost most years
- Last spring frost, half of years after
- May 231 year in 10 after June 10; 9 in 10 after May 9
- First autumn frost, half of years before
- September 221 year in 10 before September 6; 9 in 10 before October 3
NOAA puts the median frost-free season at 118 days, and the season without a hard freeze (28°F) at 145 days.
A hard freeze (28°F) comes after May 9 in half of springs and before October 2 in half of autumns.
The USDA's 2023 Plant Hardiness Zone Map puts Evergreen in zone 5b in ZIP code 80457, the nearest ZIP area. By the map's own method, the average of each year's coldest night over 1991-2020, Evergreen's NOAA station is in zone 5b: the coldest night of a typical year reaches −13°F (26 complete years).
Frost dates for every NOAA station in Colorado · Frost dates by ZIP code
Source: NOAA NCEI 1991-2020 annual normals (frost probabilities), station USC00052790; USDA 2023 Plant Hardiness Zone Map, ZIP listings: PRISM Group, Oregon State University, https://prism.oregonstate.edu, accessed October 8, 2026; the station zone: ACIS daily lows, 1991-2020. A 10% date means one year in ten has a frost after it in spring or before it in autumn.
How hot and how cold does it get in Evergreen?
In a normal year in Evergreen, 6 days a year reach 90°F, 215 nights fall to 32°F or colder and 91 days bring measurable precipitation.
- Days at 90°F or more
- 6a normal year
- Days at 100°F or more
- fewer than 1a normal year
- Nights at 32°F or colder
- 215a normal year
- Days that stay below freezing
- 20high of 32°F or less
- Days with 0.01 inch of precipitation
- 91a normal year
- Days with 1 inch of snow or more
- 23a normal year
The highest temperature in this station's record (since 1961) is 97°F, on June 26, 2012; the lowest is −38°F, on January 12, 1963.
The wettest calendar year on that record is 2015, with 28.54 in; the snowiest season is 1969–70, with 137.3 inches.
Source: NOAA NCEI 1991-2020 annual normals, station USC00052790; records: ACIS (NOAA Regional Climate Centers), station USC00052790. Records use complete months only; a month missing more than three days is left out.
How sunny is Evergreen?
Over a year 77% of the sunlight that would reach the ground under clear skies gets through the clouds in the area around Evergreen, 4.7 kWh per square metre a day. February is the sunniest month (82%) and May the cloudiest (71%).
| Month | Share of clear-sky sunshine | Sunshine, kWh/m² a day |
|---|---|---|
| January | 81% | 2.7 |
| February | 82% | 3.8 |
| March | 79% | 4.9 |
| April | 73% | 5.6 |
| May | 71% | 6.2 |
| June | 78% | 7.0 |
| July | 75% | 6.4 |
| August | 75% | 5.8 |
| September | 81% | 5.2 |
| October | 80% | 3.9 |
| November | 79% | 2.8 |
| December | 79% | 2.4 |
Source: NASA POWER solar climatology, 2001-2020 (CERES SYN1deg). Satellite-based, for the 1-degree cell (about 100 km across) around the station, so it describes the area rather than the airport.
How much heating and cooling does Evergreen need?
A normal year in Evergreen brings 7,467 heating degree days, 39% more than the median U.S. place (5,373), and 99 cooling degree days, 89% fewer than the median (908). Eight months need 300 or more heating degree days, a monthly mean of about 55°F or colder. For gardens and crops, NOAA counts 1,514 growing degree days a year above 50°F.
| Month | Heating | Cooling |
|---|---|---|
| January | 1,133 | 0 |
| February | 1,011 | 0 |
| March | 901 | 0 |
| April | 716 | 0 |
| May | 473 | 1 |
| June | 183 | 13 |
| July | 51 | 54 |
| August | 86 | 29 |
| September | 273 | 3 |
| October | 623 | 0 |
| November | 881 | 0 |
| December | 1,138 | 0 |
| Year (annual) | 7,467 | 99 |
Source: NOAA NCEI 1991-2020 monthly normals, station USC00052790. A degree day is one degree of a day's mean temperature below 65°F (heating) or above it (cooling); utilities use them to estimate energy use.
Has Evergreen been warmer than normal lately?
2024 averaged 46.3°F, 1.6°F above the 1991-2020 normal of 44.7°F. 2 of the 4 complete years since 2021 ran warmer than the normal.
| Year | Mean | Against normal | Precip. | Snow |
|---|---|---|---|---|
| 2021 | 45.4°F | +0.6°F | 16.70 | 75.4 |
| 2022 | 43.8°F | −0.9°F | 20.69 | 120.6 |
| 2023 | 43.8°F | −0.9°F | 23.39 | 79.7 |
| 2024 | 46.3°F | +1.6°F | 19.24 | 125.1 |
Over 50 complete years from 1963 to 2024, the station's annual mean temperature rose at a fitted 3.0°F per century (+0.17°C per decade). A fitted rate summarizes the whole record; single years swing well above and below it.
Source: observed years: ACIS, station USC00052790; trend: NOAA GHCN-Monthly v4. A year counts only with all twelve months complete.
How does Evergreen's climate compare?
Evergreen is warmer than 39 of the other 124 places with their own NOAA record in Colorado, and wetter than 100. Across the 7,247 U.S. stations with normals, its annual mean of 44.7°F is warmer than 18%.
In the Köppen classification computed from these normals, Evergreen is Dfb: continental, no dry season, warm summer. What the classes mean.
Places with the most similar year elsewhere
Measured month by month on the normal high, low and precipitation, among places of 20,000 or more people in other states:
Source: NOAA NCEI 1991-2020 normals for every station PlainClimate covers. Similarity: the root-mean-square difference of the 36 monthly figures, precipitation weighted so an inch counts like 6°F.
Which places near Evergreen share this climate record?
13 places have no NOAA station with 1991-2020 normals of their own, and this station is the nearest full record. A place's own climate can differ from these figures, by several degrees where it sits much higher or lower than the station, nearer the coast, or inside a large city's heat; for the larger places the next nearest records are named with their yearly mean, so the spread around them is visible, and places of 50,000 or more have their own page with NOAA's gridded normals.
- Genesee, CO3,826 people · 4 mi NE
- Indian Hills, CO1,320 people · 4 mi E
- Upper Bear Creek, CO980 people · 5 mi W
- Floyd Hill, CO850 people · 9 mi NW
- Kittredge, CO843 people · 2 mi N
- Aspen Park, CO724 people · 7 mi S
- Upper Witter Gulch, CO588 people · 6 mi W
- Brook Forest, CO408 people · 6 mi SW
- Morrison, CO394 people · 6 mi E
- Pine Valley, CO391 people · 6 mi NW
- Echo Hills, CO368 people · 6 mi NW
- Idledale, CO306 people · 4 mi NE
- Blue Valley, CO169 people · 10 mi NW
Source: Census Bureau 2024 Gazetteer (place centers) and Vintage 2024 population estimates. Distance and direction from the station to each place's center.
Questions about Evergreen's climate
What is the coldest month in Evergreen?
December, with a normal high of 44°F and a normal low of 13°F. The warmest is July (81°F by day, 49°F at night).
Does it snow in Evergreen?
Yes: 81 inches in a normal year, falling on 34 days with 0.1 inch or more, the most in March (17.0 inches).
What is the rainiest month in Evergreen?
May, with 2.49 in of precipitation in a normal year; the driest is January with 0.63 in.
What plant hardiness zone is Evergreen in?
The USDA's 2023 map puts Evergreen in zone 5b in ZIP code 80457, the nearest ZIP area. By the same method at Evergreen's NOAA station, the coldest night of a typical year reaches −13°F (26 years, 1991-2020): zone 5b.
How late can frost come in Evergreen?
In half of years the last 32°F night comes after May 23; in one year in ten it comes after June 10. Waiting until June 10 leaves about a one-in-ten chance of a later frost.
Nearby and next
- Evergreen in OctoberThis month day by day, its records and recent years
- Colorado climateThe statewide normals and every place in the state
- Lakewood, CO13 miles from this station, 50.4°F a year
- Marston Filter Plant, CO13 miles from this station, 50.8°F a year
- Ralston Reservoir, CO14 miles from this station, 51.5°F a year
- Wheat Ridge, CO14 miles from this station, 50.3°F a year
- Compare two placesMonth by month, side by side
Download these normals (CSV) · JSON · How these figures are made