Flaming Gorge, Utah climate: Normal weather by month, frost dates and records
Flaming Gorge's normal year runs from 13°F January nights to 87°F July afternoons, with 11.8 inches of precipitation and 44 inches of snow a year. (NOAA 1991-2020 normals)
In metric: a yearly mean of 7.7°C, January lows of −11°C, July highs of 30°C, 299 mm of precipitation a year.
- NOAA stationFlaming Gorge
- Station IDUSC00422864
- Location40.93°N 109.41°W
- Elevation6,244 ft (1,903 m)
- Population (census place)55
On October 23, the normal high in Flaming Gorge is 58°F and the normal low 30°F, and the chance of measurable rain or snow is 16%.
Normals describe a typical year at the station, not a forecast. The National Weather Service forecast for Flaming Gorge.
- Jan 37° 13°
- Feb 40° 15°
- Mar 50° 24°
- Apr 57° 30°
- May 67° 38°
- Jun 79° 46°
- Jul 87° 52°
- Aug 84° 52°
- Sep 75° 43°
- Oct 62° 32°
- Nov 46° 22°
- Dec 36° 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 Flaming Gorge each month?
July is the warmest month, with normal highs of 87°F; January the coldest, with normal lows of 13°F. The most precipitation falls in September (1.67 in), the least in January (0.49 in).
| Month | High | Low | Mean | Precip. | Snow | Wet days | 90°F days | Freezing nights | Daylight |
|---|---|---|---|---|---|---|---|---|---|
| January | 37°F | 13°F | 24.8°F | 0.49 | 8.1 | 4 | <1 | 30 | 9 h 30 min |
| February | 40°F | 15°F | 27.5°F | 0.66 | 8.6 | 4 | <1 | 27 | 10 h 40 min |
| March | 50°F | 24°F | 36.8°F | 0.89 | 6.6 | 6 | <1 | 28 | 11 h 50 min |
| April | 57°F | 30°F | 43.6°F | 1.10 | 3.6 | 6 | <1 | 21 | 13 h 20 min |
| May | 67°F | 38°F | 52.6°F | 1.35 | 0.6 | 7 | <1 | 9 | 14 h 30 min |
| June | 79°F | 46°F | 62.3°F | 0.94 | 0.0 | 5 | 4 | 1 | 15 h 10 min |
| July | 87°F | 52°F | 69.6°F | 1.04 | 0.0 | 5 | 13 | <1 | 14 h 50 min |
| August | 84°F | 52°F | 68.0°F | 1.19 | 0.0 | 6 | 7 | <1 | 13 h 50 min |
| September | 75°F | 43°F | 59.0°F | 1.67 | 0.1 | 6 | 1 | 4 | 12 h 30 min |
| October | 62°F | 32°F | 46.7°F | 1.37 | 2.4 | 5 | <1 | 18 | 11 h 10 min |
| November | 46°F | 22°F | 34.3°F | 0.52 | 6.3 | 4 | <1 | 27 | 10 h |
| December | 36°F | 13°F | 24.9°F | 0.54 | 7.4 | 4 | <1 | 30 | 9 h 20 min |
| Year (annual) | 60°F | 32°F | 45.8°F | 11.76 | 43.7 | 63 | 24 | 195 |
The same normals in °C and millimetres
| Month | High | Low | Mean | Precip. | Snow |
|---|---|---|---|---|---|
| January | 3°C | −11°C | −4.0°C | 12 mm | 21 cm |
| February | 4°C | −9°C | −2.5°C | 17 mm | 22 cm |
| March | 10°C | −4°C | 2.7°C | 23 mm | 17 cm |
| April | 14°C | −1°C | 6.4°C | 28 mm | 9 cm |
| May | 19°C | 3°C | 11.4°C | 34 mm | 2 cm |
| June | 26°C | 8°C | 16.8°C | 24 mm | 0 cm |
| July | 30°C | 11°C | 20.9°C | 26 mm | 0 cm |
| August | 29°C | 11°C | 20.0°C | 30 mm | 0 cm |
| September | 24°C | 6°C | 15.0°C | 42 mm | 0 cm |
| October | 16°C | 0°C | 8.2°C | 35 mm | 6 cm |
| November | 8°C | −5°C | 1.3°C | 13 mm | 16 cm |
| December | 2°C | −10°C | −3.9°C | 14 mm | 19 cm |
Source: NOAA NCEI 1991-2020 monthly normals, station USC00422864; 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 Flaming Gorge?
Normal highs sit between 65°F and 85°F in May, June, August and September. Of those, June has the fewest days with rain (5).
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 USC00422864.
When is the last frost in Flaming Gorge?
In Flaming Gorge, the last spring frost (32°F) comes after May 26 in half of years and after June 10 in one year in ten; the first autumn frost comes before September 23 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 10; 9 in 10 after May 9
- First autumn frost, half of years before
- September 231 year in 10 before September 9; 9 in 10 before October 4
NOAA puts the median frost-free season at 120 days, and the season without a hard freeze (28°F) at 144 days.
A hard freeze (28°F) comes after May 10 in half of springs and before October 3 in half of autumns.
The USDA's 2023 Plant Hardiness Zone Map puts Flaming Gorge in zone 5b in ZIP code 84023, the nearest ZIP area. By the map's own method, the average of each year's coldest night over 1991-2020, Flaming Gorge's NOAA station is in zone 5b: the coldest night of a typical year reaches −15°F (25 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 USC00422864; 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 Flaming Gorge?
In a normal year in Flaming Gorge, 24 days a year reach 90°F, 195 nights fall to 32°F or colder and 63 days bring measurable precipitation.
- Days at 90°F or more
- 24a normal year
- Days at 100°F or more
- fewer than 1a normal year
- Nights at 32°F or colder
- 195a normal year
- Days that stay below freezing
- 29high of 32°F or less
- Days with 0.01 inch of precipitation
- 63a normal year
- Days with 1 inch of snow or more
- 16a normal year
The highest temperature in this station's record (since 1957) is 102°F, on July 14, 2002; the lowest is −38°F, on January 12, 1963.
The wettest calendar year on that record is 1970, with 17.43 in; the snowiest season is 1972–73, with 113.8 inches.
Source: NOAA NCEI 1991-2020 annual normals, station USC00422864; records: ACIS (NOAA Regional Climate Centers), station USC00422864. Records use complete months only; a month missing more than three days is left out.
How sunny is Flaming Gorge?
Over a year 80% of the sunlight that would reach the ground under clear skies gets through the clouds in the area around Flaming Gorge, 4.8 kWh per square metre a day. September is the sunniest month (86%) and December the cloudiest (71%).
| Month | Share of clear-sky sunshine | Sunshine, kWh/m² a day |
|---|---|---|
| January | 74% | 2.4 |
| February | 74% | 3.3 |
| March | 74% | 4.5 |
| April | 76% | 5.8 |
| May | 79% | 6.8 |
| June | 85% | 7.7 |
| July | 84% | 7.2 |
| August | 84% | 6.4 |
| September | 86% | 5.4 |
| October | 83% | 3.9 |
| November | 78% | 2.6 |
| December | 71% | 2.0 |
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 Flaming Gorge need?
A normal year in Flaming Gorge brings 7,300 heating degree days, 36% more than the median U.S. place (5,373), and 346 cooling degree days, 62% 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 2,051 growing degree days a year above 50°F.
| Month | Heating | Cooling |
|---|---|---|
| January | 1,246 | 0 |
| February | 1,051 | 0 |
| March | 874 | 0 |
| April | 643 | 0 |
| May | 388 | 3 |
| June | 124 | 45 |
| July | 18 | 160 |
| August | 27 | 121 |
| September | 197 | 17 |
| October | 566 | 0 |
| November | 923 | 0 |
| December | 1,243 | 0 |
| Year (annual) | 7,300 | 346 |
Source: NOAA NCEI 1991-2020 monthly normals, station USC00422864. 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 Flaming Gorge been warmer than normal lately?
2023 averaged 42.7°F, 3.1°F below the 1991-2020 normal of 45.8°F. 1 of the 2 complete years since 2021 ran warmer than the normal.
| Year | Mean | Against normal | Precip. | Snow |
|---|---|---|---|---|
| 2021 | 47.3°F | +1.5°F | – | – |
| 2023 | 42.7°F | −3.1°F | 14.04 | – |
Over 48 complete years from 1958 to 2025, the station's annual mean temperature rose at a fitted 4.4°F per century (+0.24°C per decade). A fitted rate summarizes the whole record; single years swing well above and below it.
Source: observed years: ACIS, station USC00422864; trend: NOAA GHCN-Monthly v4. A year counts only with all twelve months complete.
How does Flaming Gorge's climate compare?
Flaming Gorge is warmer than 18 of the other 96 places with their own NOAA record in Utah, and wetter than 38. Across the 7,247 U.S. stations with normals, its annual mean of 45.8°F is warmer than 23%.
In the Köppen classification computed from these normals, Flaming Gorge 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 Flaming Gorge share this climate record?
Dutch John has no NOAA station with 1991-2020 normals of its 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.
- Dutch John, UT139 people · 1 mi SE
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 Flaming Gorge's climate
What is the coldest month in Flaming Gorge?
January, with a normal high of 37°F and a normal low of 13°F. The warmest is July (87°F by day, 52°F at night).
Does it snow in Flaming Gorge?
Yes: 44 inches in a normal year, falling on 19 days with 0.1 inch or more, the most in February (8.6 inches).
What is the rainiest month in Flaming Gorge?
September, with 1.67 in of precipitation in a normal year; the driest is January with 0.49 in.
What plant hardiness zone is Flaming Gorge in?
The USDA's 2023 map puts Flaming Gorge in zone 5b in ZIP code 84023, the nearest ZIP area. By the same method at Flaming Gorge's NOAA station, the coldest night of a typical year reaches −15°F (25 years, 1991-2020): zone 5b.
How late can frost come in Flaming Gorge?
In half of years the last 32°F night comes after May 26; in one year in ten it comes after June 10. Waiting until June 10 leaves about a one-in-ten chance of a later frost.
Nearby and next
- Utah climateThe statewide normals and every place in the state
- Jarvie Ranch, UT12 miles from this station, 48.1°F a year
- Manila, UT17 miles from this station, 44.7°F a year
- Buckboard Marina, WY24 miles from this station, 43.9°F a year
- Maeser, UT29 miles from this station, 46.6°F a year
- Compare two placesMonth by month, side by side
Download these normals (CSV) · JSON · How these figures are made