Granite Peak Dugway Proving Ground, Utah climate: Climate normals at a NOAA weather station
Granite Peak Dugway Proving Ground's normal year runs from 19°F December nights to 97°F July afternoons, with 6.4 inches of precipitation a year. (NOAA 1991-2020 normals)
In metric: a yearly mean of 12.5°C, December lows of −7°C, July highs of 36°C, 162 mm of precipitation a year.
- NOAA stationGranite Peak Dugway Proving Ground
- Station IDUSW00004134
- Location40.16°N 113.35°W
- Elevation4,300 ft (1,311 m)
On October 23, the normal high in Granite Peak Dugway Proving Ground is 64°F and the normal low 38°F.
Normals describe a typical year at the station, not a forecast. The National Weather Service forecast for Granite Peak Dugway Proving Ground.
- Jan 40° 21°
- Feb 48° 26°
- Mar 59° 34°
- Apr 65° 40°
- May 76° 50°
- Jun 88° 59°
- Jul 97° 67°
- Aug 94° 64°
- Sep 83° 53°
- Oct 67° 40°
- Nov 52° 29°
- Dec 39° 19°
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 Granite Peak Dugway Proving Ground each month?
July is the warmest month, with normal highs of 97°F; December the coldest, with normal lows of 19°F. The most precipitation falls in May (0.73 in), the least in September (0.30 in).
| Month | High | Low | Mean | Precip. | Wet days | 90°F days | Freezing nights | Daylight |
|---|---|---|---|---|---|---|---|---|
| January | 40°F | 21°F | 30.6°F | 0.51 | – | <1 | 29 | 9 h 40 min |
| February | 48°F | 26°F | 37.1°F | 0.53 | – | <1 | 24 | 10 h 40 min |
| March | 59°F | 34°F | 46.9°F | 0.66 | – | 1 | 14 | 11 h 50 min |
| April | 65°F | 40°F | 52.4°F | 0.72 | – | <1 | 6 | 13 h 10 min |
| May | 76°F | 50°F | 62.7°F | 0.73 | – | 4 | 1 | 14 h 20 min |
| June | 88°F | 59°F | 73.0°F | 0.60 | – | 17 | <1 | 15 h |
| July | 97°F | 67°F | 82.0°F | 0.49 | – | 28 | <1 | 14 h 50 min |
| August | 94°F | 64°F | 78.9°F | 0.50 | – | 25 | <1 | 13 h 50 min |
| September | 83°F | 53°F | 67.8°F | 0.30 | – | 8 | <1 | 12 h 30 min |
| October | 67°F | 40°F | 53.7°F | 0.40 | – | <1 | 7 | 11 h 10 min |
| November | 52°F | 29°F | 40.3°F | 0.52 | – | <1 | 21 | 10 h |
| December | 39°F | 19°F | 29.0°F | 0.40 | – | <1 | 29 | 9 h 20 min |
| Year (annual) | 67°F | 42°F | 54.5°F | 6.36 | – | 82 | 131 |
The same normals in °C and millimetres
| Month | High | Low | Mean | Precip. |
|---|---|---|---|---|
| January | 5°C | −6°C | −0.8°C | 13 mm |
| February | 9°C | −3°C | 2.8°C | 13 mm |
| March | 15°C | 1°C | 8.3°C | 17 mm |
| April | 18°C | 4°C | 11.3°C | 18 mm |
| May | 24°C | 10°C | 17.1°C | 19 mm |
| June | 31°C | 15°C | 22.8°C | 15 mm |
| July | 36°C | 20°C | 27.8°C | 12 mm |
| August | 34°C | 18°C | 26.1°C | 13 mm |
| September | 28°C | 12°C | 19.9°C | 8 mm |
| October | 20°C | 4°C | 12.1°C | 10 mm |
| November | 11°C | −2°C | 4.6°C | 13 mm |
| December | 4°C | −7°C | −1.7°C | 10 mm |
NOAA publishes no 1991-2020 snowfall normal for this station. The nearest record that keeps one, Fish Springs National Wildlife Refuge (22 miles away), gets 12 inches of snow in a normal year; elevation and distance can change that.
Source: NOAA NCEI 1991-2020 monthly normals, station USW00004134; 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 Granite Peak Dugway Proving Ground?
Normal highs sit between 65°F and 85°F in May, September and October.
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 USW00004134.
When is the last frost at Granite Peak Dugway Proving Ground?
In Granite Peak Dugway Proving Ground, the last spring frost (32°F) comes after April 18 in half of years and after May 5 in one year in ten; the first autumn frost comes before October 16 in half of years and before October 2 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
- April 181 year in 10 after May 5; 9 in 10 after April 2
- First autumn frost, half of years before
- October 161 year in 10 before October 2; 9 in 10 before October 29
NOAA puts the median frost-free season at 179 days, and the season without a hard freeze (28°F) at 205 days.
A hard freeze (28°F) comes after April 1 in half of springs and before October 26 in half of autumns.
Frost dates for every NOAA station in Utah · Frost dates by ZIP code
Source: NOAA NCEI 1991-2020 annual normals (frost probabilities), station USW00004134. 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 Granite Peak Dugway Proving Ground?
In a normal year in Granite Peak Dugway Proving Ground, 82 days a year reach 90°F (20 of them 100°F or more) and 131 nights fall to 32°F or colder.
- Days at 90°F or more
- 82a normal year
- Days at 100°F or more
- 20a normal year
- Nights at 32°F or colder
- 131a normal year
- Days that stay below freezing
- 21high of 32°F or less
Source: NOAA NCEI 1991-2020 annual normals, station USW00004134.
How sunny is it at Granite Peak Dugway Proving Ground?
Over a year 79% of the sunlight that would reach the ground under clear skies gets through the clouds at Granite Peak Dugway Proving Ground, 4.7 kWh per square metre a day. August is the sunniest month (85%) and December the cloudiest (67%).
| Month | Share of clear-sky sunshine | Sunshine, kWh/m² a day |
|---|---|---|
| January | 69% | 2.1 |
| February | 73% | 3.2 |
| March | 76% | 4.5 |
| April | 77% | 5.7 |
| May | 77% | 6.5 |
| June | 83% | 7.4 |
| July | 83% | 7.0 |
| August | 85% | 6.4 |
| September | 84% | 5.2 |
| October | 80% | 3.8 |
| November | 75% | 2.5 |
| December | 67% | 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 many heating and cooling degree days does Granite Peak Dugway Proving Ground record?
A normal year at Granite Peak Dugway Proving Ground brings 5,256 heating degree days, 2% fewer than the median U.S. place (5,373), and 1,465 cooling degree days, 61% 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 3,887 growing degree days a year above 50°F.
| Month | Heating | Cooling |
|---|---|---|
| January | 1,068 | 0 |
| February | 782 | 0 |
| March | 562 | 1 |
| April | 384 | 5 |
| May | 153 | 81 |
| June | 25 | 265 |
| July | 0 | 527 |
| August | 1 | 432 |
| September | 64 | 147 |
| October | 361 | 9 |
| November | 741 | 0 |
| December | 1,115 | 0 |
| Year (annual) | 5,256 | 1,465 |
Source: NOAA NCEI 1991-2020 monthly normals, station USW00004134. 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 Granite Peak Dugway Proving Ground been warmer than normal?
2023 averaged 54.9°F, 0.4°F above the 1991-2020 normal of 54.5°F. 1 of the 2 complete years since 2022 ran warmer than the normal.
| Year | Mean | Against normal | Precip. |
|---|---|---|---|
| 2022 | 53.8°F | −0.7°F | 4.63 |
| 2023 | 54.9°F | +0.4°F | 5.48 |
Source: observed years: ACIS, station USW00004134. A year counts only with all twelve months complete.
How does Granite Peak Dugway Proving Ground's climate compare?
Granite Peak Dugway Proving Ground is warmer than 85 of the 97 places with their own NOAA record in Utah, and wetter than 4. Across the 7,247 U.S. stations with normals, its annual mean of 54.5°F is warmer than 59%.
In the Köppen classification computed from these normals, Granite Peak Dugway Proving Ground is BWk: cold desert. 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 Granite Peak Dugway Proving Ground's climate
What is the coldest month at Granite Peak Dugway Proving Ground?
December, with a normal high of 39°F and a normal low of 19°F. The warmest is July (97°F by day, 67°F at night).
Does it snow at Granite Peak Dugway Proving Ground?
Yes. NOAA publishes no 1991-2020 snowfall normal for the station; the nearest record that keeps one, Fish Springs National Wildlife Refuge (22 miles away), records 12 inches of snow in a normal year.
What is the rainiest month at Granite Peak Dugway Proving Ground?
May, with 0.73 in of precipitation in a normal year; the driest is September with 0.30 in.
How late can frost come at Granite Peak Dugway Proving Ground?
In half of years the last 32°F night comes after April 18; in one year in ten it comes after May 5. Waiting until May 5 leaves about a one-in-ten chance of a later frost.
Nearby and next
- Utah climateThe statewide normals and every place in the state
- Fish Springs National Wildlife Refuge, UT22 miles from this station, 53.1°F a year
- Dugway, UT23 miles from this station, 51.7°F a year
- Callao, UT26 miles from this station, 49.3°F a year
- Ibapah, UT35 miles from this station, 48.3°F a year
- Compare two placesMonth by month, side by side
Download these normals (CSV) · JSON · How these figures are made