Randolph, Utah climate: Normal weather by month, frost dates and records
Randolph's normal year runs from 4°F January nights to 82°F July afternoons, with 14.4 inches of precipitation and 71 inches of snow a year. (NOAA 1991-2020 normals)
In metric: a yearly mean of 4.1°C, January lows of −15°C, July highs of 28°C, 365 mm of precipitation a year.
- NOAA stationRandolph
- Station IDUSC00427165
- Location41.66°N 111.19°W
- Elevation6,290 ft (1,917 m)
- Population499
On October 23, the normal high in Randolph is 54°F and the normal low 22°F, and the chance of measurable rain or snow is 23%.
Normals describe a typical year at the station, not a forecast. The National Weather Service forecast for Randolph.
- Jan 28° 4°
- Feb 32° 7°
- Mar 42° 18°
- Apr 52° 25°
- May 62° 33°
- Jun 73° 40°
- Jul 82° 46°
- Aug 80° 43°
- Sep 71° 34°
- Oct 58° 24°
- Nov 42° 16°
- Dec 29° 6°
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 Randolph each month?
July is the warmest month, with normal highs of 82°F; January the coldest, with normal lows of 4°F. The most precipitation falls in May (1.87 in), the least in July (0.83 in).
| Month | High | Low | Mean | Precip. | Snow | Wet days | 90°F days | Freezing nights | Daylight |
|---|---|---|---|---|---|---|---|---|---|
| January | 28°F | 4°F | 15.9°F | 1.17 | 12.7 | 9 | <1 | 31 | 9 h 30 min |
| February | 32°F | 7°F | 19.1°F | 1.05 | 12.6 | 9 | <1 | 28 | 10 h 30 min |
| March | 42°F | 18°F | 30.2°F | 1.07 | 10.3 | 9 | <1 | 31 | 11 h 50 min |
| April | 52°F | 25°F | 38.6°F | 1.34 | 6.1 | 9 | <1 | 27 | 13 h 20 min |
| May | 62°F | 33°F | 47.4°F | 1.87 | 1.8 | 10 | <1 | 18 | 14 h 30 min |
| June | 73°F | 40°F | 56.3°F | 1.15 | 0.1 | 6 | <1 | 6 | 15 h 10 min |
| July | 82°F | 46°F | 63.6°F | 0.83 | 0.0 | 6 | 3 | 1 | 15 h |
| August | 80°F | 43°F | 61.7°F | 1.21 | 0.0 | 7 | 1 | 3 | 13 h 50 min |
| September | 71°F | 34°F | 52.5°F | 1.29 | 0.6 | 6 | <1 | 16 | 12 h 30 min |
| October | 58°F | 24°F | 40.8°F | 1.25 | 3.6 | 7 | <1 | 27 | 11 h 10 min |
| November | 42°F | 16°F | 28.8°F | 1.11 | 9.3 | 8 | <1 | 29 | 9 h 50 min |
| December | 29°F | 6°F | 17.7°F | 1.02 | 13.7 | 10 | <1 | 31 | 9 h 10 min |
| Year (annual) | 54°F | 25°F | 39.4°F | 14.36 | 70.8 | 94 | 4 | 247 |
The same normals in °C and millimetres
| Month | High | Low | Mean | Precip. | Snow |
|---|---|---|---|---|---|
| January | −2°C | −15°C | −8.9°C | 30 mm | 32 cm |
| February | 0°C | −14°C | −7.2°C | 27 mm | 32 cm |
| March | 6°C | −8°C | −1.0°C | 27 mm | 26 cm |
| April | 11°C | −4°C | 3.7°C | 34 mm | 15 cm |
| May | 17°C | 1°C | 8.6°C | 47 mm | 5 cm |
| June | 23°C | 4°C | 13.5°C | 29 mm | 0 cm |
| July | 28°C | 8°C | 17.6°C | 21 mm | 0 cm |
| August | 27°C | 6°C | 16.5°C | 31 mm | 0 cm |
| September | 22°C | 1°C | 11.4°C | 33 mm | 2 cm |
| October | 14°C | −4°C | 4.9°C | 32 mm | 9 cm |
| November | 5°C | −9°C | −1.8°C | 28 mm | 24 cm |
| December | −2°C | −14°C | −7.9°C | 26 mm | 35 cm |
Source: NOAA NCEI 1991-2020 monthly normals, station USC00427165; 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 Randolph?
Normal highs sit between 65°F and 85°F in June, July, August and September. Of those, July has the fewest days with rain (6).
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 USC00427165.
When is the last frost in Randolph?
In Randolph, the last spring frost (32°F) comes after June 14 in half of years and after June 30 in one year in ten; the first autumn frost comes before September 1 in half of years and before August 18 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 141 year in 10 after June 30; 9 in 10 after May 31
- First autumn frost, half of years before
- September 11 year in 10 before August 18; 9 in 10 before September 13
NOAA puts the median frost-free season at 76 days, and the season without a hard freeze (28°F) at 105 days.
A hard freeze (28°F) comes after May 30 in half of springs and before September 11 in half of autumns.
The USDA's 2023 Plant Hardiness Zone Map puts Randolph in zone 4a in ZIP code 84064, 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 USC00427165; 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 Randolph?
In a normal year in Randolph, 4 days a year reach 90°F, 247 nights fall to 32°F or colder and 94 days bring measurable precipitation.
- Days at 90°F or more
- 4a normal year
- Days at 100°F or more
- fewer than 1a normal year
- Nights at 32°F or colder
- 247a normal year
- Days that stay below freezing
- 64high of 32°F or less
- Days with 0.01 inch of precipitation
- 94a normal year
- Days with 1 inch of snow or more
- 25a normal year
Source: NOAA NCEI 1991-2020 annual normals, station USC00427165.
How sunny is Randolph?
Over a year 81% of the sunlight that would reach the ground under clear skies gets through the clouds in the area around Randolph, 4.8 kWh per square metre a day. July is the sunniest month (90%) and December the cloudiest (67%).
| Month | Share of clear-sky sunshine | Sunshine, kWh/m² a day |
|---|---|---|
| January | 72% | 2.2 |
| February | 72% | 3.1 |
| March | 75% | 4.4 |
| April | 74% | 5.5 |
| May | 77% | 6.5 |
| June | 87% | 7.8 |
| July | 90% | 7.7 |
| August | 89% | 6.7 |
| September | 86% | 5.3 |
| October | 80% | 3.7 |
| November | 72% | 2.4 |
| 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 much heating and cooling does Randolph need?
A normal year in Randolph brings 9,378 heating degree days, 75% more than the median U.S. place (5,373), and 69 cooling degree days, 92% fewer than the median (908). Nine months need 300 or more heating degree days, a monthly mean of about 55°F or colder. For gardens and crops, NOAA counts 1,205 growing degree days a year above 50°F.
| Month | Heating | Cooling |
|---|---|---|
| January | 1,522 | 0 |
| February | 1,287 | 0 |
| March | 1,079 | 0 |
| April | 792 | 0 |
| May | 546 | 0 |
| June | 267 | 5 |
| July | 84 | 41 |
| August | 126 | 22 |
| September | 375 | 1 |
| October | 749 | 0 |
| November | 1,085 | 0 |
| December | 1,468 | 0 |
| Year (annual) | 9,378 | 69 |
Source: NOAA NCEI 1991-2020 monthly normals, station USC00427165. 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 Randolph been warmer than normal lately?
2025 averaged 44.1°F, 4.7°F above the 1991-2020 normal of 39.4°F. 2 of the 4 complete years since 2021 ran warmer than the normal.
| Year | Mean | Against normal | Precip. | Snow |
|---|---|---|---|---|
| 2021 | 42.2°F | +2.8°F | 9.92 | – |
| 2022 | 37.7°F | −1.7°F | 11.83 | 46.5 |
| 2023 | 36.9°F | −2.5°F | 15.64 | – |
| 2025 | 44.1°F | +4.7°F | 12.21 | 33.9 |
Source: observed years: ACIS, station USC00427165. A year counts only with all twelve months complete.
How does Randolph's climate compare?
Randolph is warmer than 4 of the other 96 places with their own NOAA record in Utah, and wetter than 54. Across the 7,247 U.S. stations with normals, its annual mean of 39.4°F is warmer than 5%.
In the Köppen classification computed from these normals, Randolph 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.
Questions about Randolph's climate
What is the coldest month in Randolph?
January, with a normal high of 28°F and a normal low of 4°F. The warmest is July (82°F by day, 46°F at night).
Does it snow in Randolph?
Yes: 71 inches in a normal year, falling on 43 days with 0.1 inch or more, the most in December (13.7 inches).
What is the rainiest month in Randolph?
May, with 1.87 in of precipitation in a normal year; the driest is July with 0.83 in.
What plant hardiness zone is Randolph in?
The USDA's 2023 map puts Randolph in zone 4a in ZIP code 84064, the nearest ZIP area.
How late can frost come in Randolph?
In half of years the last 32°F night comes after June 14; in one year in ten it comes after June 30. Waiting until June 30 leaves about a one-in-ten chance of a later frost.
Nearby and next
- Utah climateThe statewide normals and every place in the state
- Woodruff, UT9 miles from this station, 39.2°F a year
- Laketown, UT13 miles from this station, 43.0°F a year
- Sage (4 mi NNW), WY17 miles from this station, 38.6°F a year
- Bear Lake State Park, UT24 miles from this station, 45.3°F a year
- Compare two placesMonth by month, side by side
Download these normals (CSV) · JSON · How these figures are made