Sheridan, Wyoming climate: Normal weather by month, frost dates and records
Sheridan's normal year runs from 12°F January nights to 88°F July afternoons, with 14.9 inches of precipitation a year. (NOAA 1991-2020 normals)
In metric: a yearly mean of 7.4°C, January lows of −11°C, July highs of 31°C, 379 mm of precipitation a year.
- NOAA stationSheridan Airport
- Station IDUSW00024029
- Location44.77°N 106.97°W
- Elevation3,945 ft (1,202 m)
- Population19,813
On October 14, the normal high in Sheridan is 61°F and the normal low 32°F, and the chance of measurable rain or snow is 27%.
Normals describe a typical year at the station, not a forecast. The National Weather Service forecast for Sheridan.
- Jan 36° 12°
- Feb 38° 14°
- Mar 49° 22°
- Apr 57° 30°
- May 66° 39°
- Jun 77° 47°
- Jul 88° 54°
- Aug 87° 52°
- Sep 76° 43°
- Oct 60° 31°
- Nov 47° 20°
- Dec 37° 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 Sheridan each month?
July is the warmest month, with normal highs of 88°F; January the coldest, with normal lows of 12°F. The most precipitation falls in May (2.68 in), the least in December (0.54 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. | Wet days | 90°F days | Freezing nights | Daylight |
|---|---|---|---|---|---|---|---|---|
| January | 36°F | 12°F | 24.0°F | 0.61 | 8 | <1 | 30 | 9 h 10 min |
| February | 38°F | 14°F | 26.0°F | 0.65 | 8 | <1 | 27 | 10 h 20 min |
| March | 49°F | 22°F | 35.7°F | 1.02 | 10 | <1 | 27 | 11 h 50 min |
| April | 57°F | 30°F | 43.2°F | 1.87 | 11 | <1 | 18 | 13 h 30 min |
| May | 66°F | 39°F | 52.4°F | 2.68 | 12 | <1 | 6 | 14 h 50 min |
| June | 77°F | 47°F | 61.8°F | 1.98 | 10 | 3 | <1 | 15 h 30 min |
| July | 88°F | 54°F | 70.7°F | 1.07 | 8 | 14 | <1 | 15 h 20 min |
| August | 87°F | 52°F | 69.1°F | 0.71 | 6 | 13 | <1 | 14 h 10 min |
| September | 76°F | 43°F | 59.1°F | 1.47 | 7 | 3 | 2 | 12 h 40 min |
| October | 60°F | 31°F | 45.4°F | 1.57 | 9 | <1 | 17 | 11 h |
| November | 47°F | 20°F | 33.3°F | 0.76 | 7 | <1 | 27 | 9 h 40 min |
| December | 37°F | 12°F | 24.5°F | 0.54 | 7 | <1 | 31 | 8 h 50 min |
| Year (annual) | 60°F | 31°F | 45.4°F | 14.93 | 102 | 35 | 185 |
The same normals in °C and millimetres
| Month | High | Low | Mean | Precip. |
|---|---|---|---|---|
| January | 2°C | −11°C | −4.4°C | 15 mm |
| February | 4°C | −10°C | −3.3°C | 17 mm |
| March | 9°C | −5°C | 2.1°C | 26 mm |
| April | 14°C | −1°C | 6.2°C | 47 mm |
| May | 19°C | 4°C | 11.3°C | 68 mm |
| June | 25°C | 8°C | 16.6°C | 50 mm |
| July | 31°C | 12°C | 21.5°C | 27 mm |
| August | 30°C | 11°C | 20.6°C | 18 mm |
| September | 24°C | 6°C | 15.1°C | 37 mm |
| October | 16°C | −1°C | 7.4°C | 40 mm |
| November | 8°C | −7°C | 0.7°C | 19 mm |
| December | 3°C | −11°C | −4.2°C | 14 mm |
NOAA publishes no 1991-2020 snowfall normal for this station. Sheridan's own co-op station Sheridan Field Station does: 33 inches of snow in a normal year (see the other stations below).
Source: NOAA NCEI 1991-2020 monthly normals, station USW00024029; 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 Sheridan?
Normal highs sit between 65°F and 85°F in May, June and September. Of those, September has the fewest days with rain (7).
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 USW00024029.
When is the last frost in Sheridan?
In Sheridan, the last spring frost (32°F) comes after May 21 in half of years and after June 6 in one year in ten; the first autumn frost comes before September 23 in half of years and before September 9 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 6; 9 in 10 after May 7
- First autumn frost, half of years before
- September 231 year in 10 before September 9; 9 in 10 before October 6
NOAA puts the median frost-free season at 123 days, and the season without a hard freeze (28°F) at 147 days.
A hard freeze (28°F) comes after May 7 in half of springs and before October 3 in half of autumns.
The USDA's 2023 Plant Hardiness Zone Map puts Sheridan in zone 5a in ZIP code 82801, the nearest ZIP area. By the map's own method, the average of each year's coldest night over 1991-2020, Sheridan's NOAA station is in zone 5a: the coldest night of a typical year reaches −20°F (30 complete years).
Frost dates for every NOAA station in Wyoming · Frost dates by ZIP code
Source: NOAA NCEI 1991-2020 annual normals (frost probabilities), station USW00024029; 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 Sheridan?
In a normal year in Sheridan, 35 days a year reach 90°F (3 of them 100°F or more), 185 nights fall to 32°F or colder and 102 days bring measurable precipitation.
- Days at 90°F or more
- 35a normal year
- Days at 100°F or more
- 3a normal year
- Nights at 32°F or colder
- 185a normal year
- Days that stay below freezing
- 40high of 32°F or less
- Days with 0.01 inch of precipitation
- 102a normal year
The highest temperature in Sheridan's official record (kept by the National Weather Service since 1907) is 109°F, on July 12, 2026; the lowest is −41°F, on December 9, 1919.
The wettest calendar year on that record is 1923, with 29.79 in; the snowiest season is 1954–55, with 128.8 inches.
Source: NOAA NCEI 1991-2020 annual normals, station USW00024029; records: ACIS (NOAA Regional Climate Centers), NWS threaded record SHRthr. Records use complete months only; a month missing more than three days is left out.
How humid and windy is Sheridan, and how clear are its skies?
The summer (June-August) dew point averages 47°F. The muggiest month is June, with an average dew point of 49°F; the driest air comes in December (13°F). April is the windiest month (9.2 mph on average), and July has the most clear or nearly clear hours (79%).
| Month | Dew point | Humidity | Afternoon humidity | Wind | Clear or few clouds | Overcast |
|---|---|---|---|---|---|---|
| January | 15°F | 66% | 54% | 6.6 mph | 57% | 28% |
| February | 17°F | 64% | 47% | 7.2 mph | 58% | 27% |
| March | 26°F | 59% | 39% | 8.7 mph | 52% | 29% |
| April | 33°F | 59% | 41% | 9.2 mph | 54% | 27% |
| May | 45°F | 63% | 44% | 7.5 mph | 55% | 23% |
| June | 49°F | 53% | 33% | 6.6 mph | 73% | 9% |
| July | 49°F | 46% | 27% | 6.1 mph | 79% | 6% |
| August | 43°F | 43% | 24% | 6.1 mph | 77% | 9% |
| September | 36°F | 55% | 33% | 6.6 mph | 68% | 18% |
| October | 26°F | 61% | 41% | 6.8 mph | 62% | 24% |
| November | 18°F | 66% | 52% | 6.4 mph | 60% | 26% |
| December | 13°F | 68% | 56% | 6.4 mph | 59% | 27% |
Source: NOAA NCEI 1991-2020 hourly normals, station USW00024029. Monthly averages of all hours; afternoon humidity at 3 p.m. local standard time; sky as the share of hours NOAA's observations rate clear or few clouds (a dash where NOAA publishes no sky value).
How sunny is Sheridan?
Over a year 77% of the sunlight that would reach the ground under clear skies gets through the clouds in the area around Sheridan, 4.3 kWh per square metre a day. July is the sunniest month (86%) and April the cloudiest (70%).
| Month | Share of clear-sky sunshine | Sunshine, kWh/m² a day |
|---|---|---|
| January | 74% | 1.9 |
| February | 73% | 2.8 |
| March | 72% | 4.0 |
| April | 70% | 5.0 |
| May | 72% | 5.9 |
| June | 80% | 7.0 |
| July | 86% | 7.2 |
| August | 85% | 6.1 |
| September | 82% | 4.8 |
| October | 75% | 3.1 |
| November | 73% | 2.1 |
| December | 70% | 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 Sheridan need?
A normal year in Sheridan brings 7,542 heating degree days, 40% more than the median U.S. place (5,373), and 441 cooling degree days, 51% 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 | 1,271 | 0 |
| February | 1,090 | 0 |
| March | 908 | 0 |
| April | 654 | 0 |
| May | 394 | 4 |
| June | 138 | 43 |
| July | 22 | 197 |
| August | 37 | 162 |
| September | 212 | 34 |
| October | 608 | 2 |
| November | 951 | 0 |
| December | 1,257 | 0 |
| Year (annual) | 7,542 | 441 |
Source: NOAA NCEI 1991-2020 monthly normals, station USW00024029. 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 Sheridan been warmer than normal lately?
2025 averaged 46.4°F, 1.0°F above the 1991-2020 normal of 45.4°F. 5 of the 5 complete years since 2021 ran warmer than the normal.
| Year | Mean | Against normal | Precip. |
|---|---|---|---|
| 2021 | 47.5°F | +2.1°F | 12.95 |
| 2022 | 45.5°F | +0.1°F | 15.48 |
| 2023 | 46.2°F | +0.8°F | 22.55 |
| 2024 | 49.0°F | +3.6°F | 10.68 |
| 2025 | 46.4°F | +1.0°F | 18.78 |
Over 117 complete years from 1908 to 2025, the station's annual mean temperature rose at a fitted 3.3°F per century (+0.18°C per decade). A fitted rate summarizes the whole record; single years swing well above and below it.
Source: observed years: ACIS, station USW00024029; trend: NOAA GHCN-Monthly v4. A year counts only with all twelve months complete.
How does Sheridan's climate compare?
Sheridan is warmer than 47 of the other 70 places with their own NOAA record in Wyoming, and wetter than 43. Across the 7,247 U.S. stations with normals, its annual mean of 45.4°F is warmer than 21%.
In the Köppen classification computed from these normals, Sheridan 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.
What do Sheridan's other NOAA stations record?
One more NOAA station keeps 1991-2020 normals in or near Sheridan. This page uses Sheridan Airport; the other differs by site and elevation:
| Station | From this station | Elevation | Year | Jan low | Jul high | Precip. | Snow | Last frost |
|---|---|---|---|---|---|---|---|---|
| Sheridan Field Station USC00488160 | 8 mi NE | 3,750 ft | 44.9°F | 10°F | 87°F | 13.9 | 33 | May 18 |
Source: NOAA NCEI 1991-2020 normals for each station. Last frost: the median last spring date of 32°F.
Questions about Sheridan's climate
What is the coldest month in Sheridan?
January, with a normal high of 36°F and a normal low of 12°F. The warmest is July (88°F by day, 54°F at night).
Does it snow in Sheridan?
Yes. NOAA publishes no 1991-2020 snowfall normal for Sheridan's NOAA station; Sheridan's own co-op station Sheridan Field Station records 33 inches of snow in a normal year.
What is the rainiest month in Sheridan?
May, with 2.68 in of precipitation in a normal year; the driest is December with 0.54 in.
What plant hardiness zone is Sheridan in?
The USDA's 2023 map puts Sheridan in zone 5a in ZIP code 82801, the nearest ZIP area. By the same method at Sheridan's NOAA station, the coldest night of a typical year reaches −20°F (30 years, 1991-2020): zone 5a.
How late can frost come in Sheridan?
In half of years the last 32°F night comes after May 21; in one year in ten it comes after June 6. Waiting until June 6 leaves about a one-in-ten chance of a later frost.
Nearby and next
- Sheridan in OctoberThis month day by day, its records and recent years
- Wyoming climateThe statewide normals and every place in the state
- Big Horn, WY6 miles from this station, 45.5°F a year
- Story, WY14 miles from this station, 43.5°F a year
- Dayton, WY16 miles from this station, 43.9°F a year
- Burgess Junction, WY27 miles from this station, 34.5°F a year
- Compare two placesMonth by month, side by side
Download these normals (CSV) · JSON · How these figures are made