Farmington, Utah climate: Normal weather by month, frost dates and records
Farmington's normal year runs from 22°F January nights to 91°F July afternoons, with 20.6 inches of precipitation and 50 inches of snow a year. (NOAA 1991-2020 normals)
In metric: a yearly mean of 11.1°C, January lows of −6°C, July highs of 33°C, 525 mm of precipitation a year.
- NOAA stationFarmington (3 mi NW)
- Station IDUSC00422726
- Location41.02°N 111.93°W
- Elevation4,380 ft (1,335 m)
- From the center3 miles
- Population26,163
On October 23, the normal high in Farmington is 61°F and the normal low 38°F, and the chance of measurable rain or snow is 22%.
Normals describe a typical year at the station, not a forecast. The National Weather Service forecast for Farmington.
- Jan 36° 22°
- Feb 42° 27°
- Mar 53° 33°
- Apr 59° 39°
- May 70° 47°
- Jun 81° 56°
- Jul 91° 64°
- Aug 89° 62°
- Sep 79° 53°
- Oct 64° 40°
- Nov 49° 31°
- Dec 38° 24°
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 Farmington each month?
July is the warmest month, with normal highs of 91°F; January the coldest, with normal lows of 22°F. The most precipitation falls in May (2.71 in), the least in July (0.71 in).
| Month | High | Low | Mean | Precip. | Snow | Wet days | 90°F days | Freezing nights | Daylight |
|---|---|---|---|---|---|---|---|---|---|
| January | 36°F | 22°F | 29.0°F | 2.18 | 16.0 | 9 | <1 | 29 | 9 h 30 min |
| February | 42°F | 27°F | 34.4°F | 1.82 | 11.5 | 8 | <1 | 23 | 10 h 40 min |
| March | 53°F | 33°F | 42.9°F | 2.11 | 4.2 | 8 | <1 | 16 | 11 h 50 min |
| April | 59°F | 39°F | 49.4°F | 2.39 | 0.9 | 9 | <1 | 6 | 13 h 20 min |
| May | 70°F | 47°F | 58.6°F | 2.71 | 0.0 | 8 | 1 | <1 | 14 h 30 min |
| June | 81°F | 56°F | 68.7°F | 1.33 | 0.0 | 5 | 9 | <1 | 15 h 10 min |
| July | 91°F | 64°F | 77.3°F | 0.71 | 0.0 | 3 | 23 | <1 | 14 h 50 min |
| August | 89°F | 62°F | 75.4°F | 0.80 | 0.0 | 4 | 20 | <1 | 13 h 50 min |
| September | 79°F | 53°F | 65.6°F | 1.25 | 0.0 | 4 | 4 | <1 | 12 h 30 min |
| October | 64°F | 40°F | 52.2°F | 1.90 | 0.4 | 6 | <1 | 4 | 11 h 10 min |
| November | 49°F | 31°F | 40.1°F | 1.59 | 6.6 | 8 | <1 | 17 | 10 h |
| December | 38°F | 24°F | 30.7°F | 1.86 | 10.0 | 9 | <1 | 26 | 9 h 20 min |
| Year (annual) | 63°F | 42°F | 52.0°F | 20.65 | 49.6 | 80 | 56 | 122 |
The same normals in °C and millimetres
| Month | High | Low | Mean | Precip. | Snow |
|---|---|---|---|---|---|
| January | 2°C | −6°C | −1.7°C | 55 mm | 41 cm |
| February | 6°C | −3°C | 1.3°C | 46 mm | 29 cm |
| March | 11°C | 1°C | 6.1°C | 54 mm | 11 cm |
| April | 15°C | 4°C | 9.7°C | 61 mm | 2 cm |
| May | 21°C | 8°C | 14.8°C | 69 mm | 0 cm |
| June | 27°C | 13°C | 20.4°C | 34 mm | 0 cm |
| July | 33°C | 18°C | 25.2°C | 18 mm | 0 cm |
| August | 32°C | 17°C | 24.1°C | 20 mm | 0 cm |
| September | 26°C | 11°C | 18.7°C | 32 mm | 0 cm |
| October | 18°C | 5°C | 11.2°C | 48 mm | 1 cm |
| November | 10°C | 0°C | 4.5°C | 40 mm | 17 cm |
| December | 3°C | −5°C | −0.7°C | 47 mm | 25 cm |
Source: NOAA NCEI 1991-2020 monthly normals, station USC00422726; 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 Farmington?
Normal highs sit between 65°F and 85°F in May, June and September. Of those, September has the fewest days with rain (4).
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 USC00422726.
When is the last frost in Farmington?
In Farmington, the last spring frost (32°F) comes after April 19 in half of years and after May 7 in one year in ten; the first autumn frost comes before October 19 in half of years and before October 6 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
- April 191 year in 10 after May 7; 9 in 10 after April 1
- First autumn frost, half of years before
- October 191 year in 10 before October 6; 9 in 10 before November 4
NOAA puts the median frost-free season at 181 days, and the season without a hard freeze (28°F) at 213 days.
A hard freeze (28°F) comes after April 1 in half of springs and before November 1 in half of autumns.
The USDA's 2023 Plant Hardiness Zone Map puts Farmington in zone 7b in ZIP code 84025.
Frost dates for every NOAA station in Utah · Frost dates by ZIP code
Source: NOAA NCEI 1991-2020 annual normals (frost probabilities), station USC00422726; 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 Farmington?
In a normal year in Farmington, 56 days a year reach 90°F (4 of them 100°F or more), 122 nights fall to 32°F or colder and 80 days bring measurable precipitation.
- Days at 90°F or more
- 56a normal year
- Days at 100°F or more
- 4a normal year
- Nights at 32°F or colder
- 122a normal year
- Days that stay below freezing
- 17high of 32°F or less
- Days with 0.01 inch of precipitation
- 80a normal year
- Days with 1 inch of snow or more
- 13a normal year
The highest temperature in this station's record (since 1963) is 105°F, on July 18, 1998; the lowest is −14°F, on January 5, 1973.
The wettest calendar year on that record is 1983, with 44.90 in; the snowiest season is 1992–93, with 94.3 inches.
Source: NOAA NCEI 1991-2020 annual normals, station USC00422726; records: ACIS (NOAA Regional Climate Centers), station USC00422726. Records use complete months only; a month missing more than three days is left out.
How sunny is Farmington?
Over a year 81% of the sunlight that would reach the ground under clear skies gets through the clouds in the area around Farmington, 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 Farmington need?
A normal year in Farmington brings 5,709 heating degree days, 6% more than the median U.S. place (5,373), and 1,007 cooling degree days, 11% more 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 3,216 growing degree days a year above 50°F.
| Month | Heating | Cooling |
|---|---|---|
| January | 1,117 | 0 |
| February | 857 | 0 |
| March | 685 | 0 |
| April | 472 | 2 |
| May | 230 | 30 |
| June | 51 | 164 |
| July | 1 | 381 |
| August | 4 | 327 |
| September | 82 | 100 |
| October | 401 | 4 |
| November | 746 | 0 |
| December | 1,063 | 0 |
| Year (annual) | 5,709 | 1,007 |
Source: NOAA NCEI 1991-2020 monthly normals, station USC00422726. 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.
How does Farmington's climate compare?
Farmington is warmer than 75 of the other 96 places with their own NOAA record in Utah, and wetter than 81. Across the 7,247 U.S. stations with normals, its annual mean of 52.0°F is warmer than 49%.
In the Köppen classification computed from these normals, Farmington is Dsa: continental, dry-summer, hot 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 Farmington share this climate record?
2 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.
- Kaysville, UT33,252 people · 1 mi NW
- Fruit Heights, UT5,969 people · 2 mi E
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 Farmington's climate
What is the coldest month in Farmington?
January, with a normal high of 36°F and a normal low of 22°F. The warmest is July (91°F by day, 64°F at night).
Does it snow in Farmington?
Yes: 50 inches in a normal year, falling on 17 days with 0.1 inch or more, the most in January (16.0 inches).
What is the rainiest month in Farmington?
May, with 2.71 in of precipitation in a normal year; the driest is July with 0.71 in.
What plant hardiness zone is Farmington in?
The USDA's 2023 map puts Farmington in zone 7b in ZIP code 84025.
How late can frost come in Farmington?
In half of years the last 32°F night comes after April 19; in one year in ten it comes after May 7. Waiting until May 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
- Weber Basin Pump Plant 3, UT6 miles from this station, 50.7°F a year
- Bountiful, UT10 miles from this station, 51.2°F a year
- North Salt Lake, UT12 miles from this station, 51.9°F a year
- Ogden, UT13 miles from this station, 51.7°F a year
- Compare two placesMonth by month, side by side
Download these normals (CSV) · JSON · How these figures are made