Loa, Utah climate: Normal weather by month, frost dates and records
Loa's normal year runs from 9°F December nights to 84°F July afternoons, with 8.4 inches of precipitation and 19 inches of snow a year. (NOAA 1991-2020 normals)
In metric: a yearly mean of 6.9°C, December lows of −13°C, July highs of 29°C, 214 mm of precipitation a year.
- NOAA stationLoa
- Station IDUSC00425148
- Location38.41°N 111.64°W
- Elevation7,070 ft (2,155 m)
- Population511
On October 22, the normal high in Loa is 60°F and the normal low 25°F, and the chance of measurable rain or snow is 13%.
Normals describe a typical year at the station, not a forecast. The National Weather Service forecast for Loa.
- Jan 40° 10°
- Feb 43° 14°
- Mar 51° 20°
- Apr 58° 26°
- May 67° 35°
- Jun 78° 43°
- Jul 84° 50°
- Aug 81° 48°
- Sep 75° 39°
- Oct 63° 27°
- Nov 50° 18°
- Dec 40° 9°
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 Loa each month?
July is the warmest month, with normal highs of 84°F; December the coldest, with normal lows of 9°F. The most precipitation falls in August (1.37 in), the least in November (0.29 in).
| Month | High | Low | Mean | Precip. | Snow | Wet days | 90°F days | Freezing nights | Daylight |
|---|---|---|---|---|---|---|---|---|---|
| January | 40°F | 10°F | 24.6°F | 0.39 | 3.9 | 4 | <1 | 31 | 9 h 50 min |
| February | 43°F | 14°F | 28.1°F | 0.45 | 5.4 | 4 | <1 | 28 | 10 h 40 min |
| March | 51°F | 20°F | 35.8°F | 0.51 | 2.2 | 4 | <1 | 30 | 11 h 50 min |
| April | 58°F | 26°F | 42.1°F | 0.50 | 0.7 | 3 | <1 | 25 | 13 h 10 min |
| May | 67°F | 35°F | 51.1°F | 0.75 | 0.5 | 6 | <1 | 11 | 14 h 10 min |
| June | 78°F | 43°F | 60.5°F | 0.57 | 0.0 | 2 | 1 | 2 | 14 h 50 min |
| July | 84°F | 50°F | 66.9°F | 1.34 | 0.0 | 7 | 2 | <1 | 14 h 40 min |
| August | 81°F | 48°F | 64.7°F | 1.37 | 0.0 | 9 | 1 | <1 | 13 h 40 min |
| September | 75°F | 39°F | 56.8°F | 0.98 | 0.0 | 5 | <1 | 5 | 12 h 30 min |
| October | 63°F | 27°F | 44.9°F | 0.84 | 0.4 | 5 | <1 | 24 | 11 h 20 min |
| November | 50°F | 18°F | 33.9°F | 0.29 | 1.5 | 3 | <1 | 29 | 10 h 10 min |
| December | 40°F | 9°F | 24.5°F | 0.42 | 4.6 | 4 | <1 | 31 | 9 h 30 min |
| Year (annual) | 61°F | 28°F | 44.5°F | 8.41 | 19.2 | 54 | 5 | 215 |
The same normals in °C and millimetres
| Month | High | Low | Mean | Precip. | Snow |
|---|---|---|---|---|---|
| January | 4°C | −12°C | −4.1°C | 10 mm | 10 cm |
| February | 6°C | −10°C | −2.2°C | 11 mm | 14 cm |
| March | 11°C | −6°C | 2.1°C | 13 mm | 6 cm |
| April | 14°C | −3°C | 5.6°C | 13 mm | 2 cm |
| May | 20°C | 2°C | 10.6°C | 19 mm | 1 cm |
| June | 26°C | 6°C | 15.8°C | 14 mm | 0 cm |
| July | 29°C | 10°C | 19.4°C | 34 mm | 0 cm |
| August | 27°C | 9°C | 18.2°C | 35 mm | 0 cm |
| September | 24°C | 4°C | 13.8°C | 25 mm | 0 cm |
| October | 17°C | −3°C | 7.2°C | 21 mm | 1 cm |
| November | 10°C | −8°C | 1.1°C | 7 mm | 4 cm |
| December | 4°C | −13°C | −4.2°C | 11 mm | 12 cm |
Source: NOAA NCEI 1991-2020 monthly normals, station USC00425148; 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 Loa?
Normal highs sit between 65°F and 85°F in May, June, July, August and September. Of those, June has the fewest days with rain (2).
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 USC00425148.
When is the last frost in Loa?
In Loa, the last spring frost (32°F) comes after May 31 in half of years and after June 14 in one year in ten; the first autumn frost comes before September 21 in half of years and before September 8 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 311 year in 10 after June 14; 9 in 10 after May 15
- First autumn frost, half of years before
- September 211 year in 10 before September 8; 9 in 10 before October 1
NOAA puts the median frost-free season at 112 days, and the season without a hard freeze (28°F) at 134 days.
A hard freeze (28°F) comes after May 18 in half of springs and before September 29 in half of autumns.
The USDA's 2023 Plant Hardiness Zone Map puts Loa in zone 6a in ZIP code 84747, 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 USC00425148; 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 in Loa?
In a normal year in Loa, 5 days a year reach 90°F, 215 nights fall to 32°F or colder and 54 days bring measurable precipitation.
- Days at 90°F or more
- 5a normal year
- Days at 100°F or more
- fewer than 1a normal year
- Nights at 32°F or colder
- 215a normal year
- Days that stay below freezing
- 21high of 32°F or less
- Days with 0.01 inch of precipitation
- 54a normal year
- Days with 1 inch of snow or more
- 8a normal year
The highest temperature in this station's record (since 1893) is 101°F, on July 14, 1903; the lowest is −37°F, on February 8, 1929.
The wettest calendar year on that record is 1941, with 12.75 in; the snowiest season is 1948–49, with 53.6 inches.
Source: NOAA NCEI 1991-2020 annual normals, station USC00425148; records: ACIS (NOAA Regional Climate Centers), station USC00425148. Records use complete months only; a month missing more than three days is left out.
How sunny is Loa?
Over a year 81% of the sunlight that would reach the ground under clear skies gets through the clouds in the area around Loa, 5.1 kWh per square metre a day. June is the sunniest month (87%) and December the cloudiest (76%).
| Month | Share of clear-sky sunshine | Sunshine, kWh/m² a day |
|---|---|---|
| January | 79% | 2.8 |
| February | 77% | 3.6 |
| March | 78% | 4.9 |
| April | 79% | 6.2 |
| May | 81% | 7.1 |
| June | 87% | 8.0 |
| July | 79% | 6.9 |
| August | 80% | 6.2 |
| September | 85% | 5.6 |
| October | 85% | 4.3 |
| November | 81% | 3.0 |
| December | 76% | 2.3 |
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 Loa need?
A normal year in Loa brings 7,604 heating degree days, 42% more than the median U.S. place (5,373), and 152 cooling degree days, 83% 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 1,670 growing degree days a year above 50°F.
| Month | Heating | Cooling |
|---|---|---|
| January | 1,254 | 0 |
| February | 1,032 | 0 |
| March | 905 | 0 |
| April | 687 | 0 |
| May | 433 | 1 |
| June | 156 | 21 |
| July | 27 | 84 |
| August | 50 | 42 |
| September | 251 | 3 |
| October | 622 | 0 |
| November | 932 | 0 |
| December | 1,255 | 0 |
| Year (annual) | 7,604 | 152 |
Source: NOAA NCEI 1991-2020 monthly normals, station USC00425148. 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 Loa been warmer than normal lately?
2025 averaged 47.4°F, 2.9°F above the 1991-2020 normal of 44.5°F. 4 of the 5 complete years since 2021 ran warmer than the normal.
| Year | Mean | Against normal | Precip. | Snow |
|---|---|---|---|---|
| 2021 | 45.4°F | +0.9°F | – | 19.1 |
| 2022 | 45.2°F | +0.7°F | – | – |
| 2023 | 44.1°F | −0.4°F | 9.38 | – |
| 2024 | 46.6°F | +2.1°F | – | – |
| 2025 | 47.4°F | +2.9°F | – | – |
Over 58 complete years from 1924 to 2025, the station's annual mean temperature rose at a fitted 3.2°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 USC00425148; trend: NOAA GHCN-Monthly v4. A year counts only with all twelve months complete.
How does Loa's climate compare?
Loa is warmer than 11 of the other 96 places with their own NOAA record in Utah, and wetter than 17. Across the 7,247 U.S. stations with normals, its annual mean of 44.5°F is warmer than 17%.
In the Köppen classification computed from these normals, Loa 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.
Which places near Loa share this climate record?
3 places have no NOAA station with 1991-2020 normals of their 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.
- Bicknell, UT328 people · 7 mi SE
- Lyman, UT217 people · 3 mi E
- Fremont, UT34 people · 4 mi NE
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 Loa's climate
What is the coldest month in Loa?
December, with a normal high of 40°F and a normal low of 9°F. The warmest is July (84°F by day, 50°F at night).
Does it snow in Loa?
Yes: 19 inches in a normal year, falling on 11 days with 0.1 inch or more, the most in February (5.4 inches).
What is the rainiest month in Loa?
August, with 1.37 in of precipitation in a normal year; the driest is November with 0.29 in.
What plant hardiness zone is Loa in?
The USDA's 2023 map puts Loa in zone 6a in ZIP code 84747, the nearest ZIP area.
How late can frost come in Loa?
In half of years the last 32°F night comes after May 31; in one year in ten it comes after June 14. Waiting until June 14 leaves about a one-in-ten chance of a later frost.
Nearby and next
- Utah climateThe statewide normals and every place in the state
- Koosharem, UT15 miles from this station, 44.8°F a year
- Torrey, UT21 miles from this station, 51.1°F a year
- Angle, UT21 miles from this station, 43.9°F a year
- Capitol Reef National Park, UT22 miles from this station, 53.7°F a year
- Compare two placesMonth by month, side by side
Download these normals (CSV) · JSON · How these figures are made