Dillinger, Wyoming climate: Climate normals at a NOAA weather station
Dillinger's normal year runs from 10°F January nights to 88°F July afternoons, with 15.5 inches of precipitation and 37 inches of snow a year. (NOAA 1991-2020 normals)
In metric: a yearly mean of 7.2°C, January lows of −12°C, July highs of 31°C, 393 mm of precipitation a year.
- NOAA stationDillinger
- Station IDUSC00482580
- Location44.10°N 105.12°W
- Elevation4,310 ft (1,314 m)
On October 23, the normal high in Dillinger is 56°F and the normal low 27°F, and the chance of measurable rain or snow is 17%.
Normals describe a typical year at the station, not a forecast. The National Weather Service forecast for Dillinger.
- Jan 36° 10°
- Feb 37° 12°
- Mar 48° 21°
- Apr 56° 28°
- May 66° 38°
- Jun 78° 48°
- Jul 88° 54°
- Aug 87° 52°
- Sep 76° 42°
- Oct 60° 30°
- Nov 46° 19°
- Dec 36° 10°
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 Dillinger each month?
July is the warmest month, with normal highs of 88°F; January the coldest, with normal lows of 10°F. The most precipitation falls in May (3.09 in), the least in January (0.42 in).
| Month | High | Low | Mean | Precip. | Snow | Wet days | 90°F days | Freezing nights | Daylight |
|---|---|---|---|---|---|---|---|---|---|
| January | 36°F | 10°F | 22.9°F | 0.42 | 5.3 | 4 | <1 | 30 | 9 h 10 min |
| February | 37°F | 12°F | 24.7°F | 0.59 | 6.0 | 5 | <1 | 27 | 10 h 30 min |
| March | 48°F | 21°F | 34.5°F | 0.98 | 6.7 | 5 | <1 | 28 | 11 h 50 min |
| April | 56°F | 28°F | 42.4°F | 1.88 | 5.3 | 9 | <1 | 20 | 13 h 20 min |
| May | 66°F | 38°F | 52.3°F | 3.09 | 0.6 | 9 | <1 | 7 | 14 h 40 min |
| June | 78°F | 48°F | 62.9°F | 2.27 | 0.1 | 9 | 4 | <1 | 15 h 30 min |
| July | 88°F | 54°F | 71.1°F | 1.55 | 0.0 | 6 | 14 | <1 | 15 h 10 min |
| August | 87°F | 52°F | 69.4°F | 1.24 | 0.0 | 5 | 13 | <1 | 14 h |
| September | 76°F | 42°F | 59.0°F | 0.96 | 0.0 | 5 | 4 | 4 | 12 h 40 min |
| October | 60°F | 30°F | 44.8°F | 1.41 | 1.7 | 6 | <1 | 18 | 11 h 10 min |
| November | 46°F | 19°F | 32.5°F | 0.58 | 5.0 | 4 | <1 | 27 | 9 h 40 min |
| December | 36°F | 10°F | 23.1°F | 0.50 | 6.7 | 5 | <1 | 30 | 8 h 50 min |
| Year (annual) | 60°F | 30°F | 45.0°F | 15.47 | 37.4 | 71 | 35 | 191 |
The same normals in °C and millimetres
| Month | High | Low | Mean | Precip. | Snow |
|---|---|---|---|---|---|
| January | 2°C | −12°C | −5.1°C | 11 mm | 13 cm |
| February | 3°C | −11°C | −4.1°C | 15 mm | 15 cm |
| March | 9°C | −6°C | 1.4°C | 25 mm | 17 cm |
| April | 13°C | −2°C | 5.8°C | 48 mm | 13 cm |
| May | 19°C | 3°C | 11.3°C | 78 mm | 2 cm |
| June | 26°C | 9°C | 17.2°C | 58 mm | 0 cm |
| July | 31°C | 12°C | 21.7°C | 39 mm | 0 cm |
| August | 30°C | 11°C | 20.8°C | 31 mm | 0 cm |
| September | 24°C | 6°C | 15.0°C | 24 mm | 0 cm |
| October | 15°C | −1°C | 7.1°C | 36 mm | 4 cm |
| November | 8°C | −7°C | 0.3°C | 15 mm | 13 cm |
| December | 2°C | −12°C | −4.9°C | 13 mm | 17 cm |
Source: NOAA NCEI 1991-2020 monthly normals, station USC00482580; 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 Dillinger?
Normal highs sit between 65°F and 85°F in May, June and September. 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 USC00482580.
When is the last frost at Dillinger?
In Dillinger, the last spring frost (32°F) comes after May 25 in half of years and after June 8 in one year in ten; the first autumn frost comes before September 17 in half of years and before September 3 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 251 year in 10 after June 8; 9 in 10 after May 13
- First autumn frost, half of years before
- September 171 year in 10 before September 3; 9 in 10 before October 1
NOAA puts the median frost-free season at 113 days, and the season without a hard freeze (28°F) at 135 days.
A hard freeze (28°F) comes after May 13 in half of springs and before September 27 in half of autumns.
The USDA's 2023 Plant Hardiness Zone Map puts Dillinger in zone 4b in ZIP code 82727, the nearest ZIP area. By the map's own method, the average of each year's coldest night over 1991-2020, the station is in zone 4b: the coldest night of a typical year reaches −22°F (28 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 USC00482580; 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 at Dillinger?
In a normal year in Dillinger, 35 days a year reach 90°F (3 of them 100°F or more), 191 nights fall to 32°F or colder and 71 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
- 191a normal year
- Days that stay below freezing
- 42high of 32°F or less
- Days with 0.01 inch of precipitation
- 71a normal year
- Days with 1 inch of snow or more
- 16a normal year
The highest temperature in this station's record (since 1947) is 108°F, on July 29, 2006; the lowest is −45°F, on December 22, 1990.
The wettest calendar year on that record is 1998, with 22.38 in; the snowiest season is 1944–45, with 62.7 inches.
Source: NOAA NCEI 1991-2020 annual normals, station USC00482580; records: ACIS (NOAA Regional Climate Centers), station USC00482580. Records use complete months only; a month missing more than three days is left out.
How sunny is it at Dillinger?
Over a year 78% of the sunlight that would reach the ground under clear skies gets through the clouds at Dillinger, 4.3 kWh per square metre a day. July is the sunniest month (88%) and December the cloudiest (68%).
| Month | Share of clear-sky sunshine | Sunshine, kWh/m² a day |
|---|---|---|
| January | 71% | 1.8 |
| February | 70% | 2.7 |
| March | 72% | 3.9 |
| April | 71% | 5.0 |
| May | 73% | 6.0 |
| June | 82% | 7.1 |
| July | 88% | 7.2 |
| August | 87% | 6.2 |
| September | 82% | 4.8 |
| October | 75% | 3.1 |
| November | 74% | 2.1 |
| December | 68% | 1.5 |
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 Dillinger record?
A normal year at Dillinger brings 7,759 heating degree days, 44% more than the median U.S. place (5,373), and 487 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 2,186 growing degree days a year above 50°F.
| Month | Heating | Cooling |
|---|---|---|
| January | 1,304 | 0 |
| February | 1,130 | 0 |
| March | 944 | 0 |
| April | 680 | 0 |
| May | 400 | 5 |
| June | 124 | 61 |
| July | 20 | 209 |
| August | 36 | 173 |
| September | 220 | 39 |
| October | 629 | 1 |
| November | 975 | 0 |
| December | 1,299 | 0 |
| Year (annual) | 7,759 | 487 |
Source: NOAA NCEI 1991-2020 monthly normals, station USC00482580. 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.
Have recent years at Dillinger been warmer than normal?
2023 averaged 47.0°F, 2.0°F above the 1991-2020 normal of 45.0°F. 3 of the 3 complete years since 2021 ran warmer than the normal.
| Year | Mean | Against normal | Precip. | Snow |
|---|---|---|---|---|
| 2021 | 46.7°F | +1.7°F | 12.52 | 52.5 |
| 2022 | 45.5°F | +0.5°F | 15.90 | – |
| 2023 | 47.0°F | +2.0°F | 20.46 | 74.5 |
Over 53 complete years from 1949 to 2023, the station's annual mean temperature rose at a fitted 3.6°F per century (+0.20°C per decade). A fitted rate summarizes the whole record; single years swing well above and below it.
Source: observed years: ACIS, station USC00482580; trend: NOAA GHCN-Monthly v4. A year counts only with all twelve months complete.
How does Dillinger's climate compare?
Dillinger is warmer than 42 of the 71 places with their own NOAA record in Wyoming, and wetter than 48. Across the 7,247 U.S. stations with normals, its annual mean of 45.0°F is warmer than 19%.
In the Köppen classification computed from these normals, Dillinger 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 Dillinger's climate
What is the coldest month at Dillinger?
January, with a normal high of 36°F and a normal low of 10°F. The warmest is July (88°F by day, 54°F at night).
Does it snow at Dillinger?
Yes: 37 inches in a normal year, falling on 20 days with 0.1 inch or more, the most in March (6.7 inches).
What is the rainiest month at Dillinger?
May, with 3.09 in of precipitation in a normal year; the driest is January with 0.42 in.
What plant hardiness zone is Dillinger in?
The USDA's 2023 map puts Dillinger in zone 4b in ZIP code 82727, the nearest ZIP area. By the same method at the station, the coldest night of a typical year reaches −22°F (28 years, 1991-2020): zone 4b.
How late can frost come at Dillinger?
In half of years the last 32°F night comes after May 25; in one year in ten it comes after June 8. Waiting until June 8 leaves about a one-in-ten chance of a later frost.
Nearby and next
- Wyoming climateThe statewide normals and every place in the state
- Moorcroft, WY12 miles from this station, 44.6°F a year
- Upton, WY25 miles from this station, 44.8°F a year
- Gillette, WY27 miles from this station, 45.8°F a year
- Rochelle (7 mi ENE), WY34 miles from this station, 43.9°F a year
- Compare two placesMonth by month, side by side
Download these normals (CSV) · JSON · How these figures are made