Richfield, Utah climate: Normal weather by month, frost dates and records
Richfield's normal year runs from 16°F December nights to 90°F July afternoons, with 7.8 inches of precipitation and 18 inches of snow a year. (NOAA 1991-2020 normals)
In metric: a yearly mean of 9.8°C, December lows of −9°C, July highs of 32°C, 198 mm of precipitation a year.
- NOAA stationRichfield Radio KSVC
- Station IDUSC00427260
- Location38.76°N 112.08°W
- Elevation5,285 ft (1,611 m)
- Population8,330
On October 14, the normal high in Richfield is 69°F and the normal low 32°F, and the chance of measurable rain or snow is 18%.
Normals describe a typical year at the station, not a forecast. The National Weather Service forecast for Richfield.
- Jan 41° 17°
- Feb 47° 22°
- Mar 58° 27°
- Apr 64° 32°
- May 73° 39°
- Jun 85° 47°
- Jul 90° 54°
- Aug 88° 52°
- Sep 81° 43°
- Oct 68° 32°
- Nov 53° 23°
- Dec 41° 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 Richfield each month?
July is the warmest month, with normal highs of 90°F; December the coldest, with normal lows of 16°F. The most precipitation falls in May (0.97 in), the least in June (0.43 in).
| Month | High | Low | Mean | Precip. | Snow | Wet days | 90°F days | Freezing nights | Daylight |
|---|---|---|---|---|---|---|---|---|---|
| January | 41°F | 17°F | 29.0°F | 0.55 | 4.3 | 5 | <1 | 29 | 9 h 40 min |
| February | 47°F | 22°F | 34.5°F | 0.45 | 3.4 | 6 | <1 | 26 | 10 h 40 min |
| March | 58°F | 27°F | 42.4°F | 0.69 | 2.0 | 6 | <1 | 24 | 11 h 50 min |
| April | 64°F | 32°F | 47.8°F | 0.59 | 0.6 | 7 | <1 | 17 | 13 h 10 min |
| May | 73°F | 39°F | 56.2°F | 0.97 | 0.1 | 7 | 1 | 5 | 14 h 20 min |
| June | 85°F | 47°F | 65.6°F | 0.43 | 0.0 | 3 | 8 | <1 | 14 h 50 min |
| July | 90°F | 54°F | 72.0°F | 0.65 | 0.0 | 6 | 19 | <1 | 14 h 40 min |
| August | 88°F | 52°F | 70.3°F | 0.71 | 0.0 | 7 | 14 | <1 | 13 h 40 min |
| September | 81°F | 43°F | 61.8°F | 0.79 | 0.0 | 5 | 2 | 3 | 12 h 30 min |
| October | 68°F | 32°F | 49.9°F | 0.88 | 0.3 | 6 | <1 | 17 | 11 h 20 min |
| November | 53°F | 23°F | 38.3°F | 0.48 | 2.4 | 5 | <1 | 26 | 10 h 10 min |
| December | 41°F | 16°F | 28.6°F | 0.61 | 4.7 | 5 | <1 | 30 | 9 h 30 min |
| Year (annual) | 66°F | 34°F | 49.7°F | 7.80 | 17.8 | 67 | 44 | 176 |
The same normals in °C and millimetres
| Month | High | Low | Mean | Precip. | Snow |
|---|---|---|---|---|---|
| January | 5°C | −8°C | −1.7°C | 14 mm | 11 cm |
| February | 8°C | −6°C | 1.4°C | 11 mm | 9 cm |
| March | 14°C | −3°C | 5.8°C | 18 mm | 5 cm |
| April | 18°C | 0°C | 8.8°C | 15 mm | 2 cm |
| May | 23°C | 4°C | 13.4°C | 25 mm | 0 cm |
| June | 29°C | 8°C | 18.7°C | 11 mm | 0 cm |
| July | 32°C | 12°C | 22.2°C | 17 mm | 0 cm |
| August | 31°C | 11°C | 21.3°C | 18 mm | 0 cm |
| September | 27°C | 6°C | 16.6°C | 20 mm | 0 cm |
| October | 20°C | 0°C | 9.9°C | 22 mm | 1 cm |
| November | 12°C | −5°C | 3.5°C | 12 mm | 6 cm |
| December | 5°C | −9°C | −1.9°C | 15 mm | 12 cm |
Source: NOAA NCEI 1991-2020 monthly normals, station USC00427260; 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 Richfield?
Normal highs sit between 65°F and 85°F in May, June, September and October. Of those, June has the fewest days with rain (3).
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 USC00427260.
When is the last frost in Richfield?
In Richfield, the last spring frost (32°F) comes after May 21 in half of years and after June 7 in one year in ten; the first autumn frost comes before September 24 in half of years and before September 12 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 211 year in 10 after June 7; 9 in 10 after May 4
- First autumn frost, half of years before
- September 241 year in 10 before September 12; 9 in 10 before October 6
NOAA puts the median frost-free season at 125 days, and the season without a hard freeze (28°F) at 149 days.
A hard freeze (28°F) comes after May 7 in half of springs and before October 4 in half of autumns.
The USDA's 2023 Plant Hardiness Zone Map puts Richfield in zone 6a in ZIP code 84711, the nearest ZIP area. By the map's own method, the average of each year's coldest night over 1991-2020, Richfield's NOAA station is in zone 6a: the coldest night of a typical year reaches −9°F (26 complete years).
Frost dates for every NOAA station in Utah · Frost dates by ZIP code
Source: NOAA NCEI 1991-2020 annual normals (frost probabilities), station USC00427260; 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 Richfield?
In a normal year in Richfield, 44 days a year reach 90°F (1 of them 100°F or more), 176 nights fall to 32°F or colder and 67 days bring measurable precipitation.
- Days at 90°F or more
- 44a normal year
- Days at 100°F or more
- 1a normal year
- Nights at 32°F or colder
- 176a normal year
- Days that stay below freezing
- 16high of 32°F or less
- Days with 0.01 inch of precipitation
- 67a normal year
- Days with 1 inch of snow or more
- 9a normal year
The highest temperature in this station's record (since 1893) is 107°F, on July 5, 2023; the lowest is −33°F, on February 7, 1989.
The wettest calendar year on that record is 1981, with 11.53 in; the snowiest season is 2009–10, with 62.0 inches.
Source: NOAA NCEI 1991-2020 annual normals, station USC00427260; records: ACIS (NOAA Regional Climate Centers), station USC00427260. Records use complete months only; a month missing more than three days is left out.
How sunny is Richfield?
Over a year 83% of the sunlight that would reach the ground under clear skies gets through the clouds in the area around Richfield, 5.1 kWh per square metre a day. June is the sunniest month (90%) and December the cloudiest (74%).
| Month | Share of clear-sky sunshine | Sunshine, kWh/m² a day |
|---|---|---|
| January | 78% | 2.7 |
| February | 77% | 3.6 |
| March | 78% | 4.9 |
| April | 79% | 6.1 |
| May | 83% | 7.2 |
| June | 90% | 8.1 |
| July | 83% | 7.1 |
| August | 85% | 6.5 |
| September | 88% | 5.7 |
| October | 85% | 4.3 |
| November | 80% | 3.0 |
| December | 74% | 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 Richfield need?
A normal year in Richfield brings 6,072 heating degree days, 13% more than the median U.S. place (5,373), and 519 cooling degree days, 43% fewer 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 2,528 growing degree days a year above 50°F.
| Month | Heating | Cooling |
|---|---|---|
| January | 1,116 | 0 |
| February | 854 | 0 |
| March | 702 | 0 |
| April | 515 | 0 |
| May | 281 | 10 |
| June | 67 | 85 |
| July | 4 | 223 |
| August | 7 | 171 |
| September | 127 | 31 |
| October | 470 | 1 |
| November | 801 | 0 |
| December | 1,128 | 0 |
| Year (annual) | 6,072 | 519 |
Source: NOAA NCEI 1991-2020 monthly normals, station USC00427260. 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 Richfield been warmer than normal lately?
2024 averaged 51.1°F, 1.4°F above the 1991-2020 normal of 49.7°F. 1 of the 3 complete years since 2022 ran warmer than the normal.
| Year | Mean | Against normal | Precip. | Snow |
|---|---|---|---|---|
| 2022 | 48.6°F | −1.1°F | 6.24 | 17.0 |
| 2023 | 48.6°F | −1.1°F | 8.63 | 15.5 |
| 2024 | 51.1°F | +1.4°F | 10.01 | 15.6 |
Over 70 complete years from 1927 to 2024, the station's annual mean temperature rose at a fitted 2.9°F per century (+0.16°C per decade). A fitted rate summarizes the whole record; single years swing well above and below it.
Source: observed years: ACIS, station USC00427260; trend: NOAA GHCN-Monthly v4. A year counts only with all twelve months complete.
How does Richfield's climate compare?
Richfield is warmer than 48 of the other 96 places with their own NOAA record in Utah, and wetter than 8. Across the 7,247 U.S. stations with normals, its annual mean of 49.7°F is warmer than 39%.
In the Köppen classification computed from these normals, Richfield 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 Richfield share this climate record?
9 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.
- Monroe, UT2,711 people · 10 mi S
- Salina, UT2,610 people · 17 mi NE
- Aurora, UT1,053 people · 13 mi NE
- Annabella, UT886 people · 4 mi S
- Elsinore, UT882 people · 6 mi SW
- Redmond, UT808 people · 20 mi NE
- Central Valley, UT683 people · 4 mi S
- Glenwood, UT492 people · 5 mi E
- Sigurd, UT431 people · 10 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 Richfield's climate
What is the coldest month in Richfield?
December, with a normal high of 41°F and a normal low of 16°F. The warmest is July (90°F by day, 54°F at night).
Does it snow in Richfield?
Yes: 18 inches in a normal year, falling on 11 days with 0.1 inch or more, the most in December (4.7 inches).
What is the rainiest month in Richfield?
May, with 0.97 in of precipitation in a normal year; the driest is June with 0.43 in.
What plant hardiness zone is Richfield in?
The USDA's 2023 map puts Richfield in zone 6a in ZIP code 84711, the nearest ZIP area. By the same method at Richfield's NOAA station, the coldest night of a typical year reaches −9°F (26 years, 1991-2020): zone 6a.
How late can frost come in Richfield?
In half of years the last 32°F night comes after May 21; in one year in ten it comes after June 7. Waiting until June 7 leaves about a one-in-ten chance of a later frost.
Nearby and next
- Utah climateThe statewide normals and every place in the state
- Fremont Indian State Park, UT19 miles from this station, 47.1°F a year
- Fillmore, UT19 miles from this station, 51.3°F a year
- Kanosh, UT19 miles from this station, 53.7°F a year
- Koosharem, UT21 miles from this station, 44.8°F a year
- Compare two placesMonth by month, side by side
Download these normals (CSV) · JSON · How these figures are made