Fleming, Colorado climate: Normal weather by month, frost dates and records
Fleming's normal year runs from 17°F January nights to 90°F July afternoons, with 17.2 inches of precipitation and 37 inches of snow a year. (NOAA 1991-2020 normals)
In metric: a yearly mean of 10.4°C, January lows of −8°C, July highs of 32°C, 436 mm of precipitation a year.
- NOAA stationFleming (3 mi SW)
- Station IDUSC00052947
- Location40.65°N 102.86°W
- Elevation4,256 ft (1,297 m)
- Population422
On October 23, the normal high in Fleming is 62°F and the normal low 33°F, and the chance of measurable rain or snow is 15%.
Normals describe a typical year at the station, not a forecast. The National Weather Service forecast for Fleming.
- Jan 42° 17°
- Feb 44° 19°
- Mar 54° 27°
- Apr 62° 34°
- May 71° 45°
- Jun 83° 55°
- Jul 90° 61°
- Aug 88° 59°
- Sep 80° 50°
- Oct 65° 36°
- Nov 52° 26°
- Dec 42° 17°
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 Fleming each month?
July is the warmest month, with normal highs of 90°F; January the coldest, with normal lows of 17°F. The most precipitation falls in May (3.09 in), the least in January (0.25 in).
| Month | High | Low | Mean | Precip. | Snow | Wet days | 90°F days | Freezing nights | Daylight |
|---|---|---|---|---|---|---|---|---|---|
| January | 42°F | 17°F | 29.4°F | 0.25 | 3.7 | 3 | <1 | 30 | 9 h 30 min |
| February | 44°F | 19°F | 31.6°F | 0.40 | 7.4 | 4 | <1 | 28 | 10 h 40 min |
| March | 54°F | 27°F | 40.4°F | 0.90 | 4.8 | 4 | <1 | 26 | 11 h 50 min |
| April | 62°F | 34°F | 47.6°F | 1.81 | 5.1 | 7 | <1 | 15 | 13 h 10 min |
| May | 71°F | 45°F | 57.9°F | 3.09 | 1.2 | 9 | 2 | 3 | 14 h 20 min |
| June | 83°F | 55°F | 69.0°F | 2.49 | 0.2 | 8 | 9 | <1 | 15 h |
| July | 90°F | 61°F | 75.6°F | 2.60 | 0.0 | 8 | 19 | <1 | 14 h 50 min |
| August | 88°F | 59°F | 73.4°F | 2.17 | 0.0 | 7 | 15 | <1 | 13 h 50 min |
| September | 80°F | 50°F | 64.9°F | 1.28 | 0.2 | 5 | 7 | 1 | 12 h 30 min |
| October | 65°F | 36°F | 50.9°F | 1.28 | 3.1 | 5 | <1 | 11 | 11 h 10 min |
| November | 52°F | 26°F | 38.8°F | 0.51 | 4.4 | 3 | <1 | 25 | 10 h |
| December | 42°F | 17°F | 29.8°F | 0.40 | 6.9 | 3 | <1 | 30 | 9 h 20 min |
| Year (annual) | 65°F | 37°F | 50.8°F | 17.18 | 37.0 | 65 | 53 | 169 |
The same normals in °C and millimetres
| Month | High | Low | Mean | Precip. | Snow |
|---|---|---|---|---|---|
| January | 5°C | −8°C | −1.4°C | 6 mm | 9 cm |
| February | 7°C | −7°C | −0.2°C | 10 mm | 19 cm |
| March | 12°C | −3°C | 4.7°C | 23 mm | 12 cm |
| April | 16°C | 1°C | 8.7°C | 46 mm | 13 cm |
| May | 22°C | 7°C | 14.4°C | 78 mm | 3 cm |
| June | 28°C | 13°C | 20.6°C | 63 mm | 1 cm |
| July | 32°C | 16°C | 24.2°C | 66 mm | 0 cm |
| August | 31°C | 15°C | 23.0°C | 55 mm | 0 cm |
| September | 27°C | 10°C | 18.3°C | 33 mm | 1 cm |
| October | 19°C | 2°C | 10.5°C | 33 mm | 8 cm |
| November | 11°C | −4°C | 3.8°C | 13 mm | 11 cm |
| December | 6°C | −8°C | −1.2°C | 10 mm | 18 cm |
Source: NOAA NCEI 1991-2020 monthly normals, station USC00052947; 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 Fleming?
Normal highs sit between 65°F and 85°F in May, June, September and October. Of those, October 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 USC00052947.
When is the last frost in Fleming?
In Fleming, the last spring frost (32°F) comes after May 4 in half of years and after May 16 in one year in ten; the first autumn frost comes before October 11 in half of years and before September 29 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 41 year in 10 after May 16; 9 in 10 after April 21
- First autumn frost, half of years before
- October 111 year in 10 before September 29; 9 in 10 before October 20
NOAA puts the median frost-free season at 157 days, and the season without a hard freeze (28°F) at 175 days.
A hard freeze (28°F) comes after April 25 in half of springs and before October 19 in half of autumns.
The USDA's 2023 Plant Hardiness Zone Map puts Fleming in zone 5b in ZIP code 80728, the nearest ZIP area. By the map's own method, the average of each year's coldest night over 1991-2020, Fleming's NOAA station is in zone 5b: the coldest night of a typical year reaches −13°F (21 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 USC00052947; 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 Fleming?
In a normal year in Fleming, 53 days a year reach 90°F (7 of them 100°F or more), 169 nights fall to 32°F or colder and 65 days bring measurable precipitation.
- Days at 90°F or more
- 53a normal year
- Days at 100°F or more
- 7a normal year
- Nights at 32°F or colder
- 169a normal year
- Days that stay below freezing
- 26high of 32°F or less
- Days with 0.01 inch of precipitation
- 65a normal year
- Days with 1 inch of snow or more
- 12a normal year
The highest temperature in this station's record (since 1998) is 109°F, on June 27, 2012; the lowest is −26°F, on February 6, 2014.
The wettest calendar year on that record is 2011, with 24.40 in; the snowiest season is 2012–13, with 62.9 inches.
Source: NOAA NCEI 1991-2020 annual normals, station USC00052947; records: ACIS (NOAA Regional Climate Centers), station USC00052947. Records use complete months only; a month missing more than three days is left out.
How sunny is Fleming?
Over a year 81% of the sunlight that would reach the ground under clear skies gets through the clouds in the area around Fleming, 4.7 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% | 2.4 |
| February | 75% | 3.2 |
| March | 77% | 4.5 |
| April | 75% | 5.6 |
| May | 77% | 6.4 |
| June | 85% | 7.4 |
| July | 88% | 7.2 |
| August | 87% | 6.3 |
| September | 86% | 5.2 |
| October | 80% | 3.7 |
| November | 80% | 2.7 |
| December | 77% | 2.1 |
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 Fleming need?
A normal year in Fleming brings 6,063 heating degree days, 13% more than the median U.S. place (5,373), and 906 cooling degree days, 0% 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 3,091 growing degree days a year above 50°F.
| Month | Heating | Cooling |
|---|---|---|
| January | 1,104 | 0 |
| February | 936 | 0 |
| March | 761 | 0 |
| April | 523 | 1 |
| May | 254 | 33 |
| June | 44 | 164 |
| July | 4 | 332 |
| August | 10 | 270 |
| September | 104 | 99 |
| October | 444 | 7 |
| November | 788 | 0 |
| December | 1,091 | 0 |
| Year (annual) | 6,063 | 906 |
Source: NOAA NCEI 1991-2020 monthly normals, station USC00052947. 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 Fleming been warmer than normal lately?
2025 averaged 50.5°F, 0.3°F below the 1991-2020 normal of 50.8°F. 3 of the 4 complete years since 2021 ran warmer than the normal.
| Year | Mean | Against normal | Precip. | Snow |
|---|---|---|---|---|
| 2021 | 52.1°F | +1.3°F | 12.70 | 28.1 |
| 2022 | 51.1°F | +0.3°F | 11.82 | 54.2 |
| 2024 | 51.1°F | +0.3°F | 20.16 | 41.9 |
| 2025 | 50.5°F | −0.3°F | 17.87 | 22.3 |
Source: observed years: ACIS, station USC00052947. A year counts only with all twelve months complete.
How does Fleming's climate compare?
Fleming is warmer than 90 of the other 124 places with their own NOAA record in Colorado, and wetter than 83. Across the 7,247 U.S. stations with normals, its annual mean of 50.8°F is warmer than 44%.
In the Köppen classification computed from these normals, Fleming 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.
Which places near Fleming share this climate record?
Haxtun has no NOAA station with 1991-2020 normals of its 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.
- Haxtun, CO967 people · 12 mi E
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 Fleming's climate
What is the coldest month in Fleming?
January, with a normal high of 42°F and a normal low of 17°F. The warmest is July (90°F by day, 61°F at night).
Does it snow in Fleming?
Yes: 37 inches in a normal year, falling on 24 days with 0.1 inch or more, the most in February (7.4 inches).
What is the rainiest month in Fleming?
May, with 3.09 in of precipitation in a normal year; the driest is January with 0.25 in.
What plant hardiness zone is Fleming in?
The USDA's 2023 map puts Fleming in zone 5b in ZIP code 80728, the nearest ZIP area. By the same method at Fleming's NOAA station, the coldest night of a typical year reaches −13°F (21 years, 1991-2020): zone 5b.
How late can frost come in Fleming?
In half of years the last 32°F night comes after May 4; in one year in ten it comes after May 16. Waiting until May 16 leaves about a one-in-ten chance of a later frost.
Nearby and next
- Colorado climateThe statewide normals and every place in the state
- Leroy (5 mi WSW), CO12 miles from this station, 48.8°F a year
- Crook, CO15 miles from this station, 50.5°F a year
- Sterling, CO19 miles from this station, 51.4°F a year
- Sedgwick, CO24 miles from this station, 49.6°F a year
- Compare two placesMonth by month, side by side
Download these normals (CSV) · JSON · How these figures are made