Muddy Gap, Wyoming climate: Climate normals at a NOAA weather station
Muddy Gap's normal year runs from 14°F January nights to 87°F July afternoons. (NOAA 1991-2020 normals)
In metric: a yearly mean of 7.4°C, January lows of −10°C, July highs of 31°C.
- NOAA stationMuddy Gap
- Station IDUSC00486595
- Location42.36°N 107.44°W
- Elevation6,248 ft (1,904 m)
On October 23, the normal high in Muddy Gap is 56°F and the normal low 30°F.
Normals describe a typical year at the station, not a forecast. The National Weather Service forecast for Muddy Gap.
- Jan 32° 14°
- Feb 36° 16°
- Mar 47° 23°
- Apr 57° 30°
- May 68° 39°
- Jun 78° 46°
- Jul 87° 54°
- Aug 85° 53°
- Sep 74° 45°
- Oct 60° 33°
- Nov 44° 22°
- Dec 33° 14°
Each month: normal high (large) and low, °F. Fill: the month's normal mean, colder blue to hotter red.
What is the weather like at Muddy Gap each month?
July is the warmest month, with normal highs of 87°F; January the coldest, with normal lows of 14°F.
| Month | High | Low | Mean | Wet days | 90°F days | Freezing nights | Daylight |
|---|---|---|---|---|---|---|---|
| January | 32°F | 14°F | 23.3°F | – | <1 | 30 | 9 h 20 min |
| February | 36°F | 16°F | 25.9°F | – | <1 | 26 | 10 h 30 min |
| March | 47°F | 23°F | 35.2°F | – | <1 | 26 | 11 h 50 min |
| April | 57°F | 30°F | 43.2°F | – | <1 | 18 | 13 h 20 min |
| May | 68°F | 39°F | 53.3°F | – | <1 | 7 | 14 h 30 min |
| June | 78°F | 46°F | 62.0°F | – | 3 | 1 | 15 h 20 min |
| July | 87°F | 54°F | 70.6°F | – | 13 | <1 | 15 h |
| August | 85°F | 53°F | 68.6°F | – | 5 | <1 | 14 h |
| September | 74°F | 45°F | 59.3°F | – | <1 | 3 | 12 h 30 min |
| October | 60°F | 33°F | 46.4°F | – | <1 | 13 | 11 h 10 min |
| November | 44°F | 22°F | 32.9°F | – | <1 | 23 | 9 h 50 min |
| December | 33°F | 14°F | 23.7°F | – | <1 | 29 | 9 h 10 min |
| Year (annual) | 58°F | 32°F | 45.4°F | – | 22 | 176 |
The same normals in °C and millimetres
| Month | High | Low | Mean |
|---|---|---|---|
| January | 0°C | −10°C | −4.8°C |
| February | 2°C | −9°C | −3.4°C |
| March | 9°C | −5°C | 1.8°C |
| April | 14°C | −1°C | 6.2°C |
| May | 20°C | 4°C | 11.8°C |
| June | 26°C | 8°C | 16.7°C |
| July | 31°C | 12°C | 21.4°C |
| August | 29°C | 11°C | 20.3°C |
| September | 23°C | 7°C | 15.2°C |
| October | 15°C | 1°C | 8.0°C |
| November | 7°C | −5°C | 0.5°C |
| December | 1°C | −10°C | −4.6°C |
NOAA publishes no 1991-2020 snowfall normal for this station. The nearest record that keeps one, Jeffrey City (22 miles away), gets 60 inches of snow in a normal year; elevation and distance can change that.
Source: NOAA NCEI 1991-2020 monthly normals, station USC00486595; 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.
Which months are mildest at Muddy Gap?
Normal highs sit between 65°F and 85°F in May, 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 USC00486595.
When is the last frost at Muddy Gap?
In Muddy Gap, the last spring frost (32°F) comes after May 21 in half of years and after June 10 in one year in ten; the first autumn frost comes before September 27 in half of years and before September 12 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 211 year in 10 after June 10; 9 in 10 after May 6
- First autumn frost, half of years before
- September 271 year in 10 before September 12; 9 in 10 before October 9
NOAA puts the median frost-free season at 126 days, and the season without a hard freeze (28°F) at 150 days.
A hard freeze (28°F) comes after May 6 in half of springs and before October 5 in half of autumns.
The USDA's 2023 Plant Hardiness Zone Map puts Muddy Gap in zone 5b in ZIP code 82322, 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 USC00486595; 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 at Muddy Gap?
In a normal year in Muddy Gap, 22 days a year reach 90°F and 176 nights fall to 32°F or colder.
- Days at 90°F or more
- 22a normal year
- Days at 100°F or more
- fewer than 1a normal year
- Nights at 32°F or colder
- 176a normal year
- Days that stay below freezing
- 50high of 32°F or less
Source: NOAA NCEI 1991-2020 annual normals, station USC00486595.
How sunny is it at Muddy Gap?
Over a year 79% of the sunlight that would reach the ground under clear skies gets through the clouds at Muddy Gap, 4.7 kWh per square metre a day. July is the sunniest month (87%) and December the cloudiest (67%).
| Month | Share of clear-sky sunshine | Sunshine, kWh/m² a day |
|---|---|---|
| January | 70% | 2.0 |
| February | 70% | 2.9 |
| March | 72% | 4.2 |
| April | 74% | 5.5 |
| May | 77% | 6.5 |
| June | 85% | 7.6 |
| July | 87% | 7.4 |
| August | 86% | 6.5 |
| September | 86% | 5.2 |
| October | 79% | 3.6 |
| November | 77% | 2.4 |
| December | 67% | 1.7 |
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 many heating and cooling degree days does Muddy Gap record?
A normal year at Muddy Gap brings 7,535 heating degree days, 40% more than the median U.S. place (5,373), and 410 cooling degree days, 55% 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 2,136 growing degree days a year above 50°F.
| Month | Heating | Cooling |
|---|---|---|
| January | 1,293 | 0 |
| February | 1,096 | 0 |
| March | 922 | 0 |
| April | 654 | 0 |
| May | 367 | 6 |
| June | 139 | 47 |
| July | 21 | 194 |
| August | 29 | 138 |
| September | 196 | 24 |
| October | 577 | 0 |
| November | 961 | 0 |
| December | 1,281 | 0 |
| Year (annual) | 7,535 | 410 |
Source: NOAA NCEI 1991-2020 monthly normals, station USC00486595. 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 Muddy Gap's climate compare?
Muddy Gap is warmer than 47 of the 71 places with their own NOAA record in Wyoming. Across the 7,247 U.S. stations with normals, its annual mean of 45.4°F is warmer than 21%.
Source: NOAA NCEI 1991-2020 normals for every station PlainClimate covers.
Which places near Muddy Gap share this climate record?
Bairoil 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.
- Bairoil, WY66 people · 11 mi SW
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 Muddy Gap's climate
What is the coldest month at Muddy Gap?
January, with a normal high of 32°F and a normal low of 14°F. The warmest is July (87°F by day, 54°F at night).
Does it snow at Muddy Gap?
Yes. NOAA publishes no 1991-2020 snowfall normal for the station; the nearest record that keeps one, Jeffrey City (22 miles away), records 60 inches of snow in a normal year.
What plant hardiness zone is Muddy Gap in?
The USDA's 2023 map puts Muddy Gap in zone 5b in ZIP code 82322, the nearest ZIP area.
How late can frost come at Muddy Gap?
In half of years the last 32°F night comes after May 21; 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
- Wyoming climateThe statewide normals and every place in the state
- Jeffrey City, WY22 miles from this station, 42.3°F a year
- Seminoe Reservoir USBR, WY30 miles from this station, 43.9°F a year
- Pathfinder Dam, WY31 miles from this station, 46.3°F a year
- Leo (6 mi SW), WY32 miles from this station, 45.9°F a year
- Compare two placesMonth by month, side by side
Download these normals (CSV) · JSON · How these figures are made