Moroni, Utah climate: Normal weather by month, frost dates and records
Moroni's normal year runs from 13°F January nights to 89°F July afternoons, with 12.6 inches of precipitation a year. (NOAA 1991-2020 normals)
In metric: a yearly mean of 8.6°C, January lows of −11°C, July highs of 32°C, 319 mm of precipitation a year.
- NOAA stationMoroni
- Station IDUSC00425837
- Location39.53°N 111.59°W
- Elevation5,580 ft (1,701 m)
- From the centerunder 1 mile
- Population1,673
On October 23, the normal high in Moroni is 63°F and the normal low 30°F.
Normals describe a typical year at the station, not a forecast. The National Weather Service forecast for Moroni.
- Jan 38° 13°
- Feb 43° 18°
- Mar 55° 25°
- Apr 62° 30°
- May 71° 37°
- Jun 82° 44°
- Jul 89° 52°
- Aug 87° 51°
- Sep 79° 42°
- Oct 66° 32°
- Nov 52° 22°
- Dec 38° 13°
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 Moroni each month?
July is the warmest month, with normal highs of 89°F; January the coldest, with normal lows of 13°F. The most precipitation falls in May (1.26 in), the least in June (0.71 in).
| Month | High | Low | Mean | Precip. | Wet days | 90°F days | Freezing nights | Daylight |
|---|---|---|---|---|---|---|---|---|
| January | 38°F | 13°F | 25.5°F | 1.10 | – | <1 | 30 | 9 h 40 min |
| February | 43°F | 18°F | 30.6°F | 1.14 | – | <1 | 27 | 10 h 40 min |
| March | 55°F | 25°F | 39.8°F | 1.01 | – | <1 | 27 | 11 h 50 min |
| April | 62°F | 30°F | 45.8°F | 1.19 | – | <1 | 20 | 13 h 10 min |
| May | 71°F | 37°F | 54.2°F | 1.26 | – | <1 | 7 | 14 h 20 min |
| June | 82°F | 44°F | 63.2°F | 0.71 | – | 5 | 1 | 15 h |
| July | 89°F | 52°F | 70.5°F | 0.86 | – | 16 | <1 | 14 h 40 min |
| August | 87°F | 51°F | 68.9°F | 0.91 | – | 10 | <1 | 13 h 50 min |
| September | 79°F | 42°F | 60.5°F | 1.02 | – | 1 | 2 | 12 h 30 min |
| October | 66°F | 32°F | 49.0°F | 1.24 | – | <1 | 17 | 11 h 10 min |
| November | 52°F | 22°F | 36.7°F | 0.95 | – | <1 | 27 | 10 h |
| December | 38°F | 13°F | 25.7°F | 1.16 | – | <1 | 30 | 9 h 20 min |
| Year (annual) | 64°F | 32°F | 47.5°F | 12.55 | – | 32 | 189 |
The same normals in °C and millimetres
| Month | High | Low | Mean | Precip. |
|---|---|---|---|---|
| January | 3°C | −11°C | −3.6°C | 28 mm |
| February | 6°C | −8°C | −0.8°C | 29 mm |
| March | 13°C | −4°C | 4.3°C | 26 mm |
| April | 17°C | −1°C | 7.7°C | 30 mm |
| May | 22°C | 3°C | 12.3°C | 32 mm |
| June | 28°C | 7°C | 17.3°C | 18 mm |
| July | 32°C | 11°C | 21.4°C | 22 mm |
| August | 31°C | 10°C | 20.5°C | 23 mm |
| September | 26°C | 5°C | 15.8°C | 26 mm |
| October | 19°C | 0°C | 9.4°C | 31 mm |
| November | 11°C | −6°C | 2.6°C | 24 mm |
| December | 3°C | −10°C | −3.5°C | 29 mm |
NOAA publishes no 1991-2020 snowfall normal for this station. The nearest record that keeps one, Ephraim (12 miles away), gets 20 inches of snow in a normal year; elevation and distance can change that.
Source: NOAA NCEI 1991-2020 monthly normals, station USC00425837; 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 Moroni?
Normal highs sit between 65°F and 85°F in May, June, 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 USC00425837.
When is the last frost in Moroni?
In Moroni, the last spring frost (32°F) comes after May 26 in half of years and after June 13 in one year in ten; the first autumn frost comes before September 25 in half of years and before September 9 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 261 year in 10 after June 13; 9 in 10 after May 10
- First autumn frost, half of years before
- September 251 year in 10 before September 9; 9 in 10 before October 8
NOAA puts the median frost-free season at 119 days, and the season without a hard freeze (28°F) at 147 days.
A hard freeze (28°F) comes after May 10 in half of springs and before October 5 in half of autumns.
The USDA's 2023 Plant Hardiness Zone Map puts Moroni in zone 5b in ZIP code 84646, 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 USC00425837; 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 Moroni?
In a normal year in Moroni, 32 days a year reach 90°F and 189 nights fall to 32°F or colder.
- Days at 90°F or more
- 32a normal year
- Days at 100°F or more
- fewer than 1a normal year
- Nights at 32°F or colder
- 189a normal year
- Days that stay below freezing
- 23high of 32°F or less
The highest temperature in this station's record (since 1910) is 107°F, on July 24, 1931; the lowest is −30°F, on January 22, 1937.
The wettest calendar year on that record is 2000, with 16.67 in; the snowiest season is 1978–79, with 90.1 inches.
Source: NOAA NCEI 1991-2020 annual normals, station USC00425837; records: ACIS (NOAA Regional Climate Centers), station USC00425837. Records use complete months only; a month missing more than three days is left out.
How sunny is Moroni?
Over a year 80% of the sunlight that would reach the ground under clear skies gets through the clouds in the area around Moroni, 5.0 kWh per square metre a day. June is the sunniest month (87%) and December the cloudiest (72%).
| Month | Share of clear-sky sunshine | Sunshine, kWh/m² a day |
|---|---|---|
| January | 76% | 2.5 |
| February | 75% | 3.4 |
| March | 76% | 4.7 |
| April | 74% | 5.7 |
| May | 78% | 6.8 |
| June | 87% | 7.9 |
| July | 84% | 7.2 |
| August | 84% | 6.5 |
| September | 86% | 5.5 |
| October | 82% | 4.0 |
| November | 77% | 2.7 |
| December | 72% | 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 much heating and cooling does Moroni need?
A normal year in Moroni brings 6,724 heating degree days, 25% more than the median U.S. place (5,373), and 381 cooling degree days, 58% 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 2,223 growing degree days a year above 50°F.
| Month | Heating | Cooling |
|---|---|---|
| January | 1,224 | 0 |
| February | 965 | 0 |
| March | 780 | 0 |
| April | 576 | 0 |
| May | 340 | 4 |
| June | 101 | 47 |
| July | 9 | 179 |
| August | 13 | 133 |
| September | 153 | 18 |
| October | 496 | 0 |
| November | 849 | 0 |
| December | 1,218 | 0 |
| Year (annual) | 6,724 | 381 |
Source: NOAA NCEI 1991-2020 monthly normals, station USC00425837. 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 Moroni been warmer than normal lately?
2025 averaged 49.6°F, 2.1°F above the 1991-2020 normal of 47.5°F. 3 of the 4 complete years since 2021 ran warmer than the normal.
| Year | Mean | Against normal | Precip. |
|---|---|---|---|
| 2021 | 48.6°F | +1.1°F | 9.74 |
| 2023 | 46.4°F | −1.1°F | 11.26 |
| 2024 | 49.1°F | +1.6°F | 11.42 |
| 2025 | 49.6°F | +2.1°F | 7.18 |
Over 55 complete years from 1914 to 2025, the station's annual mean temperature rose at a fitted 2.3°F per century (+0.13°C per decade). A fitted rate summarizes the whole record; single years swing well above and below it.
Source: observed years: ACIS, station USC00425837; trend: NOAA GHCN-Monthly v4. A year counts only with all twelve months complete.
How does Moroni's climate compare?
Moroni is warmer than 34 of the other 96 places with their own NOAA record in Utah, and wetter than 42. Across the 7,247 U.S. stations with normals, its annual mean of 47.5°F is warmer than 30%.
In the Köppen classification computed from these normals, Moroni is Dfb: continental, no dry season, warm summer. 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 Moroni share this climate record?
5 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.
- Mount Pleasant, UT3,935 people · 7 mi E
- Fountain Green, UT1,303 people · 8 mi N
- Fairview, UT1,302 people · 11 mi NE
- Spring City, UT1,026 people · 6 mi SE
- Wales, UT367 people · 4 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 Moroni's climate
What is the coldest month in Moroni?
January, with a normal high of 38°F and a normal low of 13°F. The warmest is July (89°F by day, 52°F at night).
Does it snow in Moroni?
Yes. NOAA publishes no 1991-2020 snowfall normal for Moroni's NOAA station; the nearest record that keeps one, Ephraim (12 miles away), records 20 inches of snow in a normal year.
What is the rainiest month in Moroni?
May, with 1.26 in of precipitation in a normal year; the driest is June with 0.71 in.
What plant hardiness zone is Moroni in?
The USDA's 2023 map puts Moroni in zone 5b in ZIP code 84646, the nearest ZIP area.
How late can frost come in Moroni?
In half of years the last 32°F night comes after May 26; in one year in ten it comes after June 13. Waiting until June 13 leaves about a one-in-ten chance of a later frost.
Nearby and next
- Utah climateThe statewide normals and every place in the state
- Ephraim, UT12 miles from this station, 46.9°F a year
- Levan, UT15 miles from this station, 50.5°F a year
- Nephi, UT18 miles from this station, 50.5°F a year
- Manti, UT19 miles from this station, 49.2°F a year
- Compare two placesMonth by month, side by side
Download these normals (CSV) · JSON · How these figures are made