Stratton, Colorado climate: Normal weather by month, frost dates and records
Stratton's normal year runs from 18°F January nights to 90°F July afternoons, with 18.8 inches of precipitation and 34 inches of snow a year. (NOAA 1991-2020 normals)
In metric: a yearly mean of 10.8°C, January lows of −8°C, July highs of 32°C, 478 mm of precipitation a year.
- NOAA stationStratton
- Station IDUSC00058008
- Location39.30°N 102.60°W
- Elevation4,399 ft (1,341 m)
- From the centerunder 1 mile
- Population651
On October 23, the normal high in Stratton is 64°F and the normal low 34°F, and the chance of measurable rain or snow is 16%.
Normals describe a typical year at the station, not a forecast. The National Weather Service forecast for Stratton.
- Jan 43° 18°
- Feb 46° 20°
- Mar 56° 27°
- Apr 63° 34°
- May 73° 45°
- Jun 84° 55°
- Jul 90° 61°
- Aug 88° 59°
- Sep 80° 50°
- Oct 67° 37°
- Nov 53° 26°
- Dec 44° 19°
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 Stratton each month?
July is the warmest month, with normal highs of 90°F; January the coldest, with normal lows of 18°F. The most precipitation falls in July (3.34 in), the least in January (0.41 in).
| Month | High | Low | Mean | Precip. | Snow | Wet days | 90°F days | Freezing nights | Daylight |
|---|---|---|---|---|---|---|---|---|---|
| January | 43°F | 18°F | 30.4°F | 0.41 | 4.1 | 3 | <1 | 30 | 9 h 40 min |
| February | 46°F | 20°F | 32.8°F | 0.58 | 5.2 | 3 | <1 | 26 | 10 h 40 min |
| March | 56°F | 27°F | 41.3°F | 0.81 | 6.0 | 5 | <1 | 24 | 11 h 50 min |
| April | 63°F | 34°F | 48.5°F | 2.24 | 5.6 | 6 | <1 | 13 | 13 h 10 min |
| May | 73°F | 45°F | 58.8°F | 2.72 | 0.0 | 9 | 2 | 1 | 14 h 20 min |
| June | 84°F | 55°F | 69.6°F | 2.68 | 0.0 | 8 | 9 | <1 | 15 h |
| July | 90°F | 61°F | 75.1°F | 3.34 | 0.0 | 10 | 16 | <1 | 14 h 40 min |
| August | 88°F | 59°F | 73.3°F | 2.87 | 0.0 | 9 | 14 | <1 | 13 h 50 min |
| September | 80°F | 50°F | 64.7°F | 0.93 | 0.4 | 5 | 5 | 1 | 12 h 30 min |
| October | 67°F | 37°F | 51.8°F | 1.18 | 2.7 | 5 | <1 | 9 | 11 h 10 min |
| November | 53°F | 26°F | 39.5°F | 0.62 | 6.1 | 4 | <1 | 23 | 10 h |
| December | 44°F | 19°F | 31.3°F | 0.43 | 3.8 | 3 | <1 | 30 | 9 h 30 min |
| Year (annual) | 66°F | 37°F | 51.4°F | 18.81 | 33.9 | 70 | 46 | 157 |
The same normals in °C and millimetres
| Month | High | Low | Mean | Precip. | Snow |
|---|---|---|---|---|---|
| January | 6°C | −8°C | −0.9°C | 10 mm | 10 cm |
| February | 8°C | −7°C | 0.4°C | 15 mm | 13 cm |
| March | 13°C | −3°C | 5.2°C | 21 mm | 15 cm |
| April | 17°C | 1°C | 9.2°C | 57 mm | 14 cm |
| May | 23°C | 7°C | 14.9°C | 69 mm | 0 cm |
| June | 29°C | 13°C | 20.9°C | 68 mm | 0 cm |
| July | 32°C | 16°C | 23.9°C | 85 mm | 0 cm |
| August | 31°C | 15°C | 22.9°C | 73 mm | 0 cm |
| September | 27°C | 10°C | 18.2°C | 24 mm | 1 cm |
| October | 19°C | 3°C | 11.0°C | 30 mm | 7 cm |
| November | 11°C | −3°C | 4.2°C | 16 mm | 15 cm |
| December | 7°C | −7°C | −0.4°C | 11 mm | 10 cm |
Source: NOAA NCEI 1991-2020 monthly normals, station USC00058008; 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 Stratton?
Normal highs sit between 65°F and 85°F in May, June, September and October. Of those, September has the fewest days with rain (5).
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 USC00058008.
When is the last frost in Stratton?
In Stratton, the last spring frost (32°F) comes after May 6 in half of years and after May 17 in one year in ten; the first autumn frost comes before October 9 in half of years and before September 26 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 61 year in 10 after May 17; 9 in 10 after April 24
- First autumn frost, half of years before
- October 91 year in 10 before September 26; 9 in 10 before October 21
NOAA puts the median frost-free season at 155 days, and the season without a hard freeze (28°F) at 173 days.
A hard freeze (28°F) comes after April 27 in half of springs and before October 19 in half of autumns.
The USDA's 2023 Plant Hardiness Zone Map puts Stratton in zone 6a in ZIP code 80836, the nearest ZIP area.
Frost dates for every NOAA station in Colorado · Frost dates by ZIP code
Source: NOAA NCEI 1991-2020 annual normals (frost probabilities), station USC00058008; USDA 2023 Plant Hardiness Zone Map, ZIP listings: PRISM Group, Oregon State University, https://prism.oregonstate.edu, accessed October 8, 2026. 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 Stratton?
In a normal year in Stratton, 46 days a year reach 90°F (4 of them 100°F or more), 157 nights fall to 32°F or colder and 70 days bring measurable precipitation.
- Days at 90°F or more
- 46a normal year
- Days at 100°F or more
- 4a normal year
- Nights at 32°F or colder
- 157a normal year
- Days that stay below freezing
- 26high of 32°F or less
- Days with 0.01 inch of precipitation
- 70a normal year
- Days with 1 inch of snow or more
- 11a normal year
The highest temperature in this station's record (since 1934) is 108°F, on July 11, 1954; the lowest is −26°F, on February 4, 1989.
The wettest calendar year on that record is 1944, with 29.36 in; the snowiest season is 1943–44, with 67.9 inches.
Source: NOAA NCEI 1991-2020 annual normals, station USC00058008; records: ACIS (NOAA Regional Climate Centers), station USC00058008. Records use complete months only; a month missing more than three days is left out.
How sunny is Stratton?
Over a year 82% of the sunlight that would reach the ground under clear skies gets through the clouds in the area around Stratton, 4.9 kWh per square metre a day. July is the sunniest month (88%) and February the cloudiest (75%).
| Month | Share of clear-sky sunshine | Sunshine, kWh/m² a day |
|---|---|---|
| January | 79% | 2.6 |
| February | 75% | 3.4 |
| March | 78% | 4.7 |
| April | 77% | 5.7 |
| May | 79% | 6.6 |
| June | 86% | 7.4 |
| July | 88% | 7.3 |
| August | 88% | 6.5 |
| September | 86% | 5.3 |
| October | 81% | 3.9 |
| November | 81% | 2.8 |
| December | 78% | 2.2 |
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 Stratton need?
A normal year in Stratton brings 5,821 heating degree days, 8% more than the median U.S. place (5,373), and 901 cooling degree days, 1% fewer than the median (908). Seven months need 300 or more heating degree days, a monthly mean of about 55°F or colder. For gardens and crops, NOAA counts 3,146 growing degree days a year above 50°F.
| Month | Heating | Cooling |
|---|---|---|
| January | 1,074 | 0 |
| February | 900 | 0 |
| March | 737 | 0 |
| April | 499 | 2 |
| May | 223 | 32 |
| June | 40 | 177 |
| July | 6 | 320 |
| August | 9 | 267 |
| September | 106 | 96 |
| October | 416 | 7 |
| November | 765 | 0 |
| December | 1,046 | 0 |
| Year (annual) | 5,821 | 901 |
Source: NOAA NCEI 1991-2020 monthly normals, station USC00058008. 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.
How does Stratton's climate compare?
Stratton is warmer than 98 of the other 124 places with their own NOAA record in Colorado, and wetter than 101. Across the 7,247 U.S. stations with normals, its annual mean of 51.4°F is warmer than 47%.
In the Köppen classification computed from these normals, Stratton is BSk: cold semi-arid steppe. 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.
Questions about Stratton's climate
What is the coldest month in Stratton?
January, with a normal high of 43°F and a normal low of 18°F. The warmest is July (90°F by day, 61°F at night).
Does it snow in Stratton?
Yes: 34 inches in a normal year, falling on 20 days with 0.1 inch or more, the most in November (6.1 inches).
What is the rainiest month in Stratton?
July, with 3.34 in of precipitation in a normal year; the driest is January with 0.41 in.
What plant hardiness zone is Stratton in?
The USDA's 2023 map puts Stratton in zone 6a in ZIP code 80836, the nearest ZIP area.
How late can frost come in Stratton?
In half of years the last 32°F night comes after May 6; in one year in ten it comes after May 17. Waiting until May 17 leaves about a one-in-ten chance of a later frost.
Nearby and next
- Colorado climateThe statewide normals and every place in the state
- Seibert, CO14 miles from this station, 49.9°F a year
- Burlington, CO17 miles from this station, 51.4°F a year
- Joes, CO25 miles from this station, 51.2°F a year
- Flagler, CO25 miles from this station, 51.2°F a year
- Compare two placesMonth by month, side by side
Download these normals (CSV) · JSON · How these figures are made