Dugway, Utah climate: Normal weather by month, frost dates and records
Dugway's normal year runs from 16°F December nights to 96°F July afternoons, with 8.3 inches of precipitation and 15 inches of snow a year. (NOAA 1991-2020 normals)
In metric: a yearly mean of 10.9°C, December lows of −9°C, July highs of 36°C, 210 mm of precipitation a year.
- NOAA stationDugway
- Station IDUSC00422257
- Location40.18°N 112.92°W
- Elevation4,345 ft (1,324 m)
- Population (census place)441
On October 23, the normal high in Dugway is 64°F and the normal low 32°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 Dugway.
- Jan 40° 17°
- Feb 47° 23°
- Mar 57° 29°
- Apr 64° 35°
- May 75° 43°
- Jun 87° 53°
- Jul 96° 61°
- Aug 94° 59°
- Sep 83° 48°
- Oct 67° 34°
- Nov 52° 25°
- Dec 40° 16°
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 Dugway each month?
July is the warmest month, with normal highs of 96°F; December the coldest, with normal lows of 16°F. The most precipitation falls in May (1.11 in), the least in August (0.45 in).
| Month | High | Low | Mean | Precip. | Snow | Wet days | 90°F days | Freezing nights | Daylight |
|---|---|---|---|---|---|---|---|---|---|
| January | 40°F | 17°F | 28.1°F | 0.69 | 4.1 | 7 | <1 | 30 | 9 h 40 min |
| February | 47°F | 23°F | 34.8°F | 0.63 | 3.4 | 7 | <1 | 26 | 10 h 40 min |
| March | 57°F | 29°F | 42.9°F | 0.79 | 1.6 | 6 | <1 | 23 | 11 h 50 min |
| April | 64°F | 35°F | 49.4°F | 1.05 | 1.3 | 8 | <1 | 13 | 13 h 10 min |
| May | 75°F | 43°F | 58.8°F | 1.11 | 0.0 | 7 | 3 | 3 | 14 h 20 min |
| June | 87°F | 53°F | 69.7°F | 0.56 | 0.0 | 4 | 14 | <1 | 15 h |
| July | 96°F | 61°F | 78.3°F | 0.46 | 0.0 | 4 | 27 | <1 | 14 h 50 min |
| August | 94°F | 59°F | 76.4°F | 0.45 | 0.0 | 4 | 25 | <1 | 13 h 50 min |
| September | 83°F | 48°F | 65.1°F | 0.59 | 0.0 | 4 | 8 | 1 | 12 h 30 min |
| October | 67°F | 34°F | 50.8°F | 0.81 | 0.0 | 5 | <1 | 15 | 11 h 10 min |
| November | 52°F | 25°F | 38.2°F | 0.55 | 1.1 | 5 | <1 | 25 | 10 h |
| December | 40°F | 16°F | 27.7°F | 0.57 | 3.5 | 6 | <1 | 29 | 9 h 20 min |
| Year (annual) | 67°F | 37°F | 51.7°F | 8.26 | 15.0 | 66 | 77 | 165 |
The same normals in °C and millimetres
| Month | High | Low | Mean | Precip. | Snow |
|---|---|---|---|---|---|
| January | 4°C | −9°C | −2.2°C | 18 mm | 10 cm |
| February | 8°C | −5°C | 1.6°C | 16 mm | 9 cm |
| March | 14°C | −2°C | 6.1°C | 20 mm | 4 cm |
| April | 18°C | 2°C | 9.7°C | 27 mm | 3 cm |
| May | 24°C | 6°C | 14.9°C | 28 mm | 0 cm |
| June | 30°C | 12°C | 20.9°C | 14 mm | 0 cm |
| July | 36°C | 16°C | 25.7°C | 12 mm | 0 cm |
| August | 34°C | 15°C | 24.7°C | 11 mm | 0 cm |
| September | 28°C | 9°C | 18.4°C | 15 mm | 0 cm |
| October | 20°C | 1°C | 10.4°C | 21 mm | 0 cm |
| November | 11°C | −4°C | 3.4°C | 14 mm | 3 cm |
| December | 4°C | −9°C | −2.4°C | 14 mm | 9 cm |
Source: NOAA NCEI 1991-2020 monthly normals, station USC00422257; 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 Dugway?
Normal highs sit between 65°F and 85°F in May, September and October. Of those, September has the fewest days with rain (4).
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 USC00422257.
When is the last frost in Dugway?
In Dugway, the last spring frost (32°F) comes after May 11 in half of years and after May 29 in one year in ten; the first autumn frost comes before October 2 in half of years and before September 19 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 111 year in 10 after May 29; 9 in 10 after April 25
- First autumn frost, half of years before
- October 21 year in 10 before September 19; 9 in 10 before October 15
NOAA puts the median frost-free season at 143 days, and the season without a hard freeze (28°F) at 164 days.
A hard freeze (28°F) comes after April 28 in half of springs and before October 12 in half of autumns.
The USDA's 2023 Plant Hardiness Zone Map puts Dugway in zone 6b in ZIP code 84022, the nearest ZIP area. By the map's own method, the average of each year's coldest night over 1991-2020, Dugway's NOAA station is in zone 6a: the coldest night of a typical year reaches −8°F (21 complete years); the map interpolates between stations and terrain, so the station and the ZIP area can differ by half a zone.
Frost dates for every NOAA station in Utah · Frost dates by ZIP code
Source: NOAA NCEI 1991-2020 annual normals (frost probabilities), station USC00422257; 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 Dugway?
In a normal year in Dugway, 77 days a year reach 90°F (17 of them 100°F or more), 165 nights fall to 32°F or colder and 66 days bring measurable precipitation.
- Days at 90°F or more
- 77a normal year
- Days at 100°F or more
- 17a normal year
- Nights at 32°F or colder
- 165a normal year
- Days that stay below freezing
- 17high of 32°F or less
- Days with 0.01 inch of precipitation
- 66a normal year
- Days with 1 inch of snow or more
- 6a normal year
The highest temperature in this station's record (since 1950) is 109°F, on July 19, 1989; the lowest is −29°F, on February 7, 1989.
The wettest calendar year on that record is 1998, with 12.23 in; the snowiest season is 1951–52, with 37.6 inches.
Source: NOAA NCEI 1991-2020 annual normals, station USC00422257; records: ACIS (NOAA Regional Climate Centers), station USC00422257. Records use complete months only; a month missing more than three days is left out.
How sunny is Dugway?
Over a year 81% of the sunlight that would reach the ground under clear skies gets through the clouds in the area around Dugway, 4.8 kWh per square metre a day. July is the sunniest month (88%) and December the cloudiest (66%).
| Month | Share of clear-sky sunshine | Sunshine, kWh/m² a day |
|---|---|---|
| January | 69% | 2.1 |
| February | 71% | 3.1 |
| March | 75% | 4.4 |
| April | 77% | 5.8 |
| May | 80% | 6.8 |
| June | 88% | 7.8 |
| July | 88% | 7.4 |
| August | 87% | 6.6 |
| September | 87% | 5.4 |
| October | 82% | 3.9 |
| November | 75% | 2.5 |
| December | 66% | 1.8 |
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 Dugway need?
A normal year in Dugway brings 5,911 heating degree days, 10% more than the median U.S. place (5,373), and 1,087 cooling degree days, 20% more 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 3,262 growing degree days a year above 50°F.
| Month | Heating | Cooling |
|---|---|---|
| January | 1,144 | 0 |
| February | 846 | 0 |
| March | 685 | 0 |
| April | 470 | 2 |
| May | 224 | 30 |
| June | 44 | 186 |
| July | 2 | 415 |
| August | 4 | 357 |
| September | 90 | 94 |
| October | 442 | 2 |
| November | 804 | 0 |
| December | 1,158 | 0 |
| Year (annual) | 5,911 | 1,087 |
Source: NOAA NCEI 1991-2020 monthly normals, station USC00422257. 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 Dugway's climate compare?
Dugway is warmer than 70 of the other 96 places with their own NOAA record in Utah, and wetter than 12. Across the 7,247 U.S. stations with normals, its annual mean of 51.7°F is warmer than 48%.
In the Köppen classification computed from these normals, Dugway 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 Dugway's climate
What is the coldest month in Dugway?
December, with a normal high of 40°F and a normal low of 16°F. The warmest is July (96°F by day, 61°F at night).
Does it snow in Dugway?
Yes: 15 inches in a normal year, falling on 15 days with 0.1 inch or more, the most in January (4.1 inches).
What is the rainiest month in Dugway?
May, with 1.11 in of precipitation in a normal year; the driest is August with 0.45 in.
What plant hardiness zone is Dugway in?
The USDA's 2023 map puts Dugway in zone 6b in ZIP code 84022, the nearest ZIP area. By the same method at Dugway's NOAA station, the coldest night of a typical year reaches −8°F (21 years, 1991-2020): zone 6a.
How late can frost come in Dugway?
In half of years the last 32°F night comes after May 11; in one year in ten it comes after May 29. Waiting until May 29 leaves about a one-in-ten chance of a later frost.
Nearby and next
- Utah climateThe statewide normals and every place in the state
- Johnson Pass, UT19 miles from this station, 49.8°F a year
- Granite Peak Dugway Proving Ground, UT23 miles from this station, 54.5°F a year
- Vernon, UT26 miles from this station, 46.9°F a year
- Fish Springs National Wildlife Refuge, UT35 miles from this station, 53.1°F a year
- Compare two placesMonth by month, side by side
Download these normals (CSV) · JSON · How these figures are made