Moon Lake, Utah climate: Climate normals at a NOAA weather station
Moon Lake's normal year runs from 7°F January nights to 78°F August afternoons. (NOAA 1991-2020 normals)
In metric: a yearly mean of 4.6°C, January lows of −14°C, August highs of 25°C.
- NOAA stationMoon Lake
- Station IDUSC00425815
- Location40.56°N 110.49°W
- Elevation8,125 ft (2,477 m)
On October 23, the normal high in Moon Lake is 53°F and the normal low 29°F.
Normals describe a typical year at the station, not a forecast. The National Weather Service forecast for Moon Lake.
- Jan 31° 7°
- Feb 34° 12°
- Mar 41° 18°
- Apr 49° 24°
- May 59° 34°
- Jun 70° 40°
- Jul 77° 48°
- Aug 78° 49°
- Sep 68° 41°
- Oct 56° 31°
- Nov 40° 22°
- Dec 31° 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 at Moon Lake each month?
August is the warmest month, with normal highs of 78°F; January the coldest, with normal lows of 7°F.
| Month | High | Low | Mean | Wet days | 90°F days | Freezing nights | Daylight |
|---|---|---|---|---|---|---|---|
| January | 31°F | 7°F | 18.9°F | – | <1 | 31 | 9 h 30 min |
| February | 34°F | 12°F | 23.1°F | – | <1 | 28 | 10 h 40 min |
| March | 41°F | 18°F | 29.2°F | – | <1 | 31 | 11 h 50 min |
| April | 49°F | 24°F | 36.3°F | – | <1 | 27 | 13 h 10 min |
| May | 59°F | 34°F | 46.1°F | – | <1 | 20 | 14 h 20 min |
| June | 70°F | 40°F | 54.6°F | – | <1 | 6 | 15 h |
| July | 77°F | 48°F | 62.9°F | – | <1 | <1 | 14 h 50 min |
| August | 78°F | 49°F | 63.5°F | – | <1 | <1 | 13 h 50 min |
| September | 68°F | 41°F | 54.1°F | – | <1 | 7 | 12 h 30 min |
| October | 56°F | 31°F | 43.3°F | – | <1 | 22 | 11 h 10 min |
| November | 40°F | 22°F | 31.0°F | – | <1 | 27 | 10 h |
| December | 31°F | 12°F | 21.1°F | – | <1 | 31 | 9 h 20 min |
| Year (annual) | 53°F | 28°F | 40.3°F | – | <1 | 230 |
The same normals in °C and millimetres
| Month | High | Low | Mean |
|---|---|---|---|
| January | −1°C | −14°C | −7.3°C |
| February | 1°C | −11°C | −4.9°C |
| March | 5°C | −8°C | −1.6°C |
| April | 10°C | −5°C | 2.4°C |
| May | 15°C | 1°C | 7.8°C |
| June | 21°C | 4°C | 12.6°C |
| July | 25°C | 9°C | 17.2°C |
| August | 25°C | 10°C | 17.5°C |
| September | 20°C | 5°C | 12.3°C |
| October | 13°C | 0°C | 6.3°C |
| November | 5°C | −6°C | −0.6°C |
| December | −1°C | −11°C | −6.1°C |
NOAA publishes no 1991-2020 snowfall normal for this station. The nearest record that keeps one, Altamont (17 miles away), gets 39 inches of snow in a normal year; elevation and distance can change that.
Source: NOAA NCEI 1991-2020 monthly normals, station USC00425815; 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 Moon Lake?
Normal highs sit between 65°F and 85°F in June, July, 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 USC00425815.
When is the last frost at Moon Lake?
In Moon Lake, the last spring frost (32°F) comes after June 11 in half of years and after June 24 in one year in ten; the first autumn frost comes before September 18 in half of years and before September 5 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
- June 111 year in 10 after June 24; 9 in 10 after May 29
- First autumn frost, half of years before
- September 181 year in 10 before September 5; 9 in 10 before September 30
NOAA puts the median frost-free season at 97 days, and the season without a hard freeze (28°F) at 118 days.
A hard freeze (28°F) comes after June 1 in half of springs and before September 28 in half of autumns.
The USDA's 2023 Plant Hardiness Zone Map puts Moon Lake in zone 6a in ZIP code 84051, the nearest ZIP area.
Frost dates for every NOAA station in Utah · Frost dates by ZIP code
Source: NOAA NCEI 1991-2020 annual normals (frost probabilities), station USC00425815; 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 Moon Lake?
In a normal year in Moon Lake, a 90°F day is rare and 230 nights fall to 32°F or colder.
- Days at 90°F or more
- fewer than 1a normal year
- Days at 100°F or more
- fewer than 1a normal year
- Nights at 32°F or colder
- 230a normal year
- Days that stay below freezing
- 74high of 32°F or less
Source: NOAA NCEI 1991-2020 annual normals, station USC00425815.
How sunny is it at Moon Lake?
Over a year 79% of the sunlight that would reach the ground under clear skies gets through the clouds at Moon Lake, 4.8 kWh per square metre a day. September is the sunniest month (83%) and April the cloudiest (74%).
| Month | Share of clear-sky sunshine | Sunshine, kWh/m² a day |
|---|---|---|
| January | 78% | 2.5 |
| February | 77% | 3.4 |
| March | 76% | 4.7 |
| April | 74% | 5.7 |
| May | 74% | 6.5 |
| June | 83% | 7.6 |
| July | 80% | 7.0 |
| August | 80% | 6.2 |
| September | 83% | 5.3 |
| October | 81% | 3.9 |
| November | 77% | 2.6 |
| December | 74% | 2.1 |
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 Moon Lake record?
A normal year at Moon Lake brings 9,017 heating degree days, 68% more than the median U.S. place (5,373), and 46 cooling degree days, 95% fewer than the median (908). Ten months need 300 or more heating degree days, a monthly mean of about 55°F or colder. For gardens and crops, NOAA counts 1,194 growing degree days a year above 50°F.
| Month | Heating | Cooling |
|---|---|---|
| January | 1,429 | 0 |
| February | 1,175 | 0 |
| March | 1,110 | 0 |
| April | 861 | 0 |
| May | 588 | 0 |
| June | 313 | 1 |
| July | 85 | 18 |
| August | 74 | 25 |
| September | 329 | 1 |
| October | 673 | 0 |
| November | 1,020 | 0 |
| December | 1,362 | 0 |
| Year (annual) | 9,017 | 46 |
Source: NOAA NCEI 1991-2020 monthly normals, station USC00425815. 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 Moon Lake been warmer than normal?
2024 averaged 37.8°F, 2.5°F below the 1991-2020 normal of 40.3°F.
| Year | Mean | Against normal |
|---|---|---|
| 2024 | 37.8°F | −2.5°F |
Source: observed years: ACIS, station USC00425815. A year counts only with all twelve months complete.
How does Moon Lake's climate compare?
Moon Lake is warmer than 5 of the 97 places with their own NOAA record in Utah. Across the 7,247 U.S. stations with normals, its annual mean of 40.3°F is warmer than 6%.
Source: NOAA NCEI 1991-2020 normals for every station PlainClimate covers.
Which places near Moon Lake share this climate record?
Tabiona 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.
- Tabiona, UT156 people · 18 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 Moon Lake's climate
What is the coldest month at Moon Lake?
January, with a normal high of 31°F and a normal low of 7°F. The warmest is August (78°F by day, 49°F at night).
Does it snow at Moon Lake?
Yes. NOAA publishes no 1991-2020 snowfall normal for the station; the nearest record that keeps one, Altamont (17 miles away), records 39 inches of snow in a normal year.
What plant hardiness zone is Moon Lake in?
The USDA's 2023 map puts Moon Lake in zone 6a in ZIP code 84051, the nearest ZIP area.
How late can frost come at Moon Lake?
In half of years the last 32°F night comes after June 11; in one year in ten it comes after June 24. Waiting until June 24 leaves about a one-in-ten chance of a later frost.
Nearby and next
- Utah climateThe statewide normals and every place in the state
- Altamont, UT17 miles from this station, 42.2°F a year
- Neola, UT25 miles from this station, 45.4°F a year
- Duchesne, UT27 miles from this station, 48.1°F a year
- Roosevelt, UT34 miles from this station, 46.2°F a year
- Compare two placesMonth by month, side by side
Download these normals (CSV) · JSON · How these figures are made