Moorcroft, Wyoming climate: Normal weather by month, frost dates and records
Moorcroft's normal year runs from 12°F January nights to 86°F July afternoons. (NOAA 1991-2020 normals)
In metric: a yearly mean of 7.0°C, January lows of −11°C, July highs of 30°C.
- NOAA stationMoorcroft (3 mi S)
- Station IDUSW00024088
- Location44.22°N 104.93°W
- Elevation4,325 ft (1,318 m)
- Population1,025
On October 23, the normal high in Moorcroft is 55°F and the normal low 30°F.
Normals describe a typical year at the station, not a forecast. The National Weather Service forecast for Moorcroft.
- Jan 32° 12°
- Feb 34° 13°
- Mar 46° 23°
- Apr 54° 29°
- May 63° 39°
- Jun 75° 49°
- Jul 86° 57°
- Aug 84° 54°
- Sep 74° 44°
- Oct 59° 32°
- Nov 44° 22°
- Dec 34° 12°
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 Moorcroft each month?
July is the warmest month, with normal highs of 86°F; January the coldest, with normal lows of 12°F.
| Month | High | Low | Mean | Wet days | 90°F days | Freezing nights | Daylight |
|---|---|---|---|---|---|---|---|
| January | 32°F | 12°F | 22.0°F | – | <1 | 31 | 9 h 10 min |
| February | 34°F | 13°F | 23.5°F | – | <1 | 27 | 10 h 30 min |
| March | 46°F | 23°F | 34.1°F | – | <1 | 28 | 11 h 50 min |
| April | 54°F | 29°F | 41.3°F | – | <1 | 21 | 13 h 20 min |
| May | 63°F | 39°F | 51.0°F | – | <1 | 10 | 14 h 40 min |
| June | 75°F | 49°F | 62.1°F | – | 2 | 1 | 15 h 30 min |
| July | 86°F | 57°F | 71.4°F | – | 13 | <1 | 15 h 10 min |
| August | 84°F | 54°F | 69.2°F | – | 12 | 1 | 14 h |
| September | 74°F | 44°F | 58.9°F | – | 2 | 4 | 12 h 40 min |
| October | 59°F | 32°F | 45.5°F | – | <1 | 17 | 11 h |
| November | 44°F | 22°F | 32.8°F | – | <1 | 26 | 9 h 40 min |
| December | 34°F | 12°F | 23.1°F | – | <1 | 31 | 8 h 50 min |
| Year (annual) | 57°F | 32°F | 44.6°F | – | 30 | 196 |
The same normals in °C and millimetres
| Month | High | Low | Mean |
|---|---|---|---|
| January | 0°C | −11°C | −5.6°C |
| February | 1°C | −11°C | −4.7°C |
| March | 8°C | −5°C | 1.2°C |
| April | 12°C | −2°C | 5.2°C |
| May | 17°C | 4°C | 10.6°C |
| June | 24°C | 9°C | 16.7°C |
| July | 30°C | 14°C | 21.9°C |
| August | 29°C | 12°C | 20.7°C |
| September | 23°C | 7°C | 14.9°C |
| October | 15°C | 0°C | 7.5°C |
| November | 7°C | −6°C | 0.4°C |
| December | 1°C | −11°C | −4.9°C |
NOAA publishes no 1991-2020 snowfall normal for this station. The nearest record that keeps one, Dillinger (12 miles away), gets 37 inches of snow in a normal year; elevation and distance can change that.
Source: NOAA NCEI 1991-2020 monthly normals, station USW00024088; 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 Moorcroft?
Normal highs sit between 65°F and 85°F in June, August and September.
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 USW00024088.
When is the last frost in Moorcroft?
In Moorcroft, the last spring frost (32°F) comes after May 22 in half of years and after June 9 in one year in ten; the first autumn frost comes before September 28 in half of years and before September 11 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 221 year in 10 after June 9; 9 in 10 after May 8
- First autumn frost, half of years before
- September 281 year in 10 before September 11; 9 in 10 before October 10
NOAA puts the median frost-free season at 127 days, and the season without a hard freeze (28°F) at 149 days.
A hard freeze (28°F) comes after May 10 in half of springs and before October 5 in half of autumns.
The USDA's 2023 Plant Hardiness Zone Map puts Moorcroft in zone 4b in ZIP code 82721, the nearest ZIP area.
Frost dates for every NOAA station in Wyoming · Frost dates by ZIP code
Source: NOAA NCEI 1991-2020 annual normals (frost probabilities), station USW00024088; 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 Moorcroft?
In a normal year in Moorcroft, 30 days a year reach 90°F (2 of them 100°F or more) and 196 nights fall to 32°F or colder.
- Days at 90°F or more
- 30a normal year
- Days at 100°F or more
- 2a normal year
- Nights at 32°F or colder
- 196a normal year
- Days that stay below freezing
- 50high of 32°F or less
The highest temperature in this station's record (since 1903) is 108°F, on July 9, 1989; the lowest is −46°F, on December 22, 1990.
The wettest calendar year on that record is 1915, with 23.66 in; the snowiest season is 1989–90, with 100.7 inches.
Source: NOAA NCEI 1991-2020 annual normals, station USW00024088; records: ACIS (NOAA Regional Climate Centers), station USW00024088. Records use complete months only; a month missing more than three days is left out.
How sunny is Moorcroft?
Over a year 78% of the sunlight that would reach the ground under clear skies gets through the clouds in the area around Moorcroft, 4.3 kWh per square metre a day. July is the sunniest month (87%) and April the cloudiest (71%).
| Month | Share of clear-sky sunshine | Sunshine, kWh/m² a day |
|---|---|---|
| January | 74% | 1.9 |
| February | 75% | 2.9 |
| March | 74% | 4.0 |
| April | 71% | 5.0 |
| May | 72% | 6.0 |
| June | 81% | 7.0 |
| July | 87% | 7.2 |
| August | 87% | 6.2 |
| September | 82% | 4.7 |
| October | 74% | 3.1 |
| November | 74% | 2.1 |
| December | 71% | 1.6 |
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 Moorcroft need?
A normal year in Moorcroft brings 7,906 heating degree days, 47% more than the median U.S. place (5,373), and 490 cooling degree days, 46% 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 2,156 growing degree days a year above 50°F.
| Month | Heating | Cooling |
|---|---|---|
| January | 1,333 | 0 |
| February | 1,162 | 0 |
| March | 957 | 0 |
| April | 713 | 0 |
| May | 439 | 3 |
| June | 146 | 58 |
| July | 21 | 219 |
| August | 41 | 173 |
| September | 220 | 35 |
| October | 607 | 1 |
| November | 967 | 0 |
| December | 1,300 | 0 |
| Year (annual) | 7,906 | 490 |
Source: NOAA NCEI 1991-2020 monthly normals, station USW00024088. 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 Moorcroft been warmer than normal lately?
2024 averaged 47.7°F, 3.1°F above the 1991-2020 normal of 44.6°F.
| Year | Mean | Against normal |
|---|---|---|
| 2024 | 47.7°F | +3.1°F |
Over 32 complete years from 1950 to 2024, the station's annual mean temperature rose at a fitted 5.5°F per century (+0.30°C per decade). A fitted rate summarizes the whole record; single years swing well above and below it.
Source: observed years: ACIS, station USW00024088; trend: NOAA GHCN-Monthly v4. A year counts only with all twelve months complete.
How does Moorcroft's climate compare?
Moorcroft is warmer than 36 of the other 70 places with their own NOAA record in Wyoming. Across the 7,247 U.S. stations with normals, its annual mean of 44.6°F is warmer than 18%.
Source: NOAA NCEI 1991-2020 normals for every station PlainClimate covers.
Which places near Moorcroft share this climate record?
Pine Haven 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.
- Pine Haven, WY565 people · 11 mi NE
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 Moorcroft's climate
What is the coldest month in Moorcroft?
January, with a normal high of 32°F and a normal low of 12°F. The warmest is July (86°F by day, 57°F at night).
Does it snow in Moorcroft?
Yes. NOAA publishes no 1991-2020 snowfall normal for Moorcroft's NOAA station; the nearest record that keeps one, Dillinger (12 miles away), records 37 inches of snow in a normal year.
What plant hardiness zone is Moorcroft in?
The USDA's 2023 map puts Moorcroft in zone 4b in ZIP code 82721, the nearest ZIP area.
How late can frost come in Moorcroft?
In half of years the last 32°F night comes after May 22; in one year in ten it comes after June 9. Waiting until June 9 leaves about a one-in-ten chance of a later frost.
Nearby and next
- Wyoming climateThe statewide normals and every place in the state
- Dillinger, WY12 miles from this station, 45.0°F a year
- Upton, WY18 miles from this station, 44.8°F a year
- Devils Tower #2, WY27 miles from this station, 44.4°F a year
- Gillette, WY32 miles from this station, 45.8°F a year
- Compare two placesMonth by month, side by side
Download these normals (CSV) · JSON · How these figures are made