Bitter Creek (4 mi NE), Wyoming climate: Climate normals at a NOAA weather station
Bitter Creek (4 mi NE)'s normal year runs from 11°F January nights to 86°F July afternoons, with 7.3 inches of precipitation a year. (NOAA 1991-2020 normals)
In metric: a yearly mean of 6.5°C, January lows of −12°C, July highs of 30°C, 185 mm of precipitation a year.
- NOAA stationBitter Creek (4 mi NE)
- Station IDUSC00480761
- Location41.59°N 108.51°W
- Elevation6,722 ft (2,049 m)
On October 23, the normal high in Bitter Creek (4 mi NE) is 55°F and the normal low 28°F, and the chance of measurable rain or snow is 15%.
Normals describe a typical year at the station, not a forecast. The National Weather Service forecast for Bitter Creek (4 mi NE).
- Jan 33° 11°
- Feb 36° 14°
- Mar 46° 23°
- Apr 55° 29°
- May 65° 37°
- Jun 77° 44°
- Jul 86° 51°
- Aug 83° 49°
- Sep 73° 41°
- Oct 58° 30°
- Nov 44° 20°
- Dec 33° 11°
Each month: normal high (large) and low, °F. Fill: the month's normal mean, colder blue to hotter red.
What is the weather like at Bitter Creek (4 mi NE) each month?
July is the warmest month, with normal highs of 86°F; January the coldest, with normal lows of 11°F. The most precipitation falls in May (1.22 in), the least in January (0.36 in).
| Month | High | Low | Mean | Precip. | Wet days | 90°F days | Freezing nights | Daylight |
|---|---|---|---|---|---|---|---|---|
| January | 33°F | 11°F | 22.0°F | 0.36 | 4 | <1 | 31 | 9 h 30 min |
| February | 36°F | 14°F | 24.8°F | 0.40 | 4 | <1 | 27 | 10 h 40 min |
| March | 46°F | 23°F | 34.7°F | 0.53 | 4 | <1 | 29 | 11 h 50 min |
| April | 55°F | 29°F | 42.1°F | 0.62 | 6 | <1 | 23 | 13 h 20 min |
| May | 65°F | 37°F | 51.0°F | 1.22 | 7 | <1 | 10 | 14 h 30 min |
| June | 77°F | 44°F | 60.5°F | 0.66 | 5 | 2 | 2 | 15 h 10 min |
| July | 86°F | 51°F | 68.1°F | 0.54 | 4 | 8 | <1 | 15 h |
| August | 83°F | 49°F | 66.2°F | 0.65 | 4 | 4 | 1 | 13 h 50 min |
| September | 73°F | 41°F | 56.9°F | 0.74 | 6 | <1 | 6 | 12 h 30 min |
| October | 58°F | 30°F | 44.4°F | 0.70 | 5 | <1 | 21 | 11 h 10 min |
| November | 44°F | 20°F | 32.0°F | 0.42 | 5 | <1 | 28 | 9 h 50 min |
| December | 33°F | 11°F | 22.0°F | 0.46 | 4 | <1 | 30 | 9 h 10 min |
| Year (annual) | 58°F | 30°F | 43.7°F | 7.30 | 57 | 14 | 207 |
The same normals in °C and millimetres
| Month | High | Low | Mean | Precip. |
|---|---|---|---|---|
| January | 1°C | −12°C | −5.6°C | 9 mm |
| February | 2°C | −10°C | −4.0°C | 10 mm |
| March | 8°C | −5°C | 1.5°C | 13 mm |
| April | 13°C | −2°C | 5.6°C | 16 mm |
| May | 19°C | 3°C | 10.6°C | 31 mm |
| June | 25°C | 7°C | 15.8°C | 17 mm |
| July | 30°C | 10°C | 20.1°C | 14 mm |
| August | 29°C | 10°C | 19.0°C | 17 mm |
| September | 23°C | 5°C | 13.8°C | 19 mm |
| October | 15°C | −1°C | 6.9°C | 18 mm |
| November | 7°C | −7°C | 0.0°C | 11 mm |
| December | 1°C | −12°C | −5.6°C | 12 mm |
NOAA publishes no 1991-2020 snowfall normal for this station, and no record within 25 miles keeps one, so snow is left out here rather than estimated.
Source: NOAA NCEI 1991-2020 monthly normals, station USC00480761; 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.
Which months are mildest at Bitter Creek (4 mi NE)?
Normal highs sit between 65°F and 85°F in May, June, August and September. Of those, August 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 USC00480761.
When is the last frost at Bitter Creek (4 mi NE)?
In Bitter Creek (4 mi NE), the last spring frost (32°F) comes after June 1 in half of years and after June 21 in one year in ten; the first autumn frost comes before September 16 in half of years and before September 2 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 11 year in 10 after June 21; 9 in 10 after May 15
- First autumn frost, half of years before
- September 161 year in 10 before September 2; 9 in 10 before October 1
NOAA puts the median frost-free season at 106 days, and the season without a hard freeze (28°F) at 133 days.
A hard freeze (28°F) comes after May 15 in half of springs and before September 28 in half of autumns.
By the USDA's method, the average of each year's coldest night over 1991-2020, the station is in plant hardiness zone 4a: the coldest night of a typical year reaches −26°F (17 complete years).
Frost dates for every NOAA station in Wyoming · Frost dates by ZIP code
Source: NOAA NCEI 1991-2020 annual normals (frost probabilities), station USC00480761; 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 at Bitter Creek (4 mi NE)?
In a normal year in Bitter Creek (4 mi NE), 14 days a year reach 90°F, 207 nights fall to 32°F or colder and 57 days bring measurable precipitation.
- Days at 90°F or more
- 14a normal year
- Days at 100°F or more
- fewer than 1a normal year
- Nights at 32°F or colder
- 207a normal year
- Days that stay below freezing
- 41high of 32°F or less
- Days with 0.01 inch of precipitation
- 57a normal year
The highest temperature in this station's record (since 1962) is 103°F, on July 18, 1969; the lowest is −46°F, on January 4, 1972.
The wettest calendar year on that record is 2015, with 10.95 in; the snowiest season is 1988–89, with 33.1 inches.
Source: NOAA NCEI 1991-2020 annual normals, station USC00480761; records: ACIS (NOAA Regional Climate Centers), station USC00480761. Records use complete months only; a month missing more than three days is left out.
How sunny is it at Bitter Creek (4 mi NE)?
Over a year 79% of the sunlight that would reach the ground under clear skies gets through the clouds at Bitter Creek (4 mi NE), 4.7 kWh per square metre a day. September is the sunniest month (86%) and December the cloudiest (66%).
| Month | Share of clear-sky sunshine | Sunshine, kWh/m² a day |
|---|---|---|
| January | 69% | 2.1 |
| February | 69% | 3.0 |
| March | 73% | 4.3 |
| April | 76% | 5.7 |
| May | 78% | 6.7 |
| June | 85% | 7.7 |
| July | 85% | 7.3 |
| August | 85% | 6.5 |
| September | 86% | 5.4 |
| October | 81% | 3.8 |
| November | 76% | 2.5 |
| December | 66% | 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 many heating and cooling degree days does Bitter Creek (4 mi NE) record?
A normal year at Bitter Creek (4 mi NE) brings 7,964 heating degree days, 48% more than the median U.S. place (5,373), and 242 cooling degree days, 73% 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 1,774 growing degree days a year above 50°F.
| Month | Heating | Cooling |
|---|---|---|
| January | 1,331 | 0 |
| February | 1,124 | 0 |
| March | 938 | 0 |
| April | 688 | 0 |
| May | 435 | 1 |
| June | 162 | 27 |
| July | 28 | 124 |
| August | 45 | 82 |
| September | 250 | 8 |
| October | 640 | 0 |
| November | 990 | 0 |
| December | 1,333 | 0 |
| Year (annual) | 7,964 | 242 |
Source: NOAA NCEI 1991-2020 monthly normals, station USC00480761. 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.
Have recent years at Bitter Creek (4 mi NE) been warmer than normal?
2025 averaged 46.0°F, 2.3°F above the 1991-2020 normal of 43.7°F. 3 of the 5 complete years since 2021 ran warmer than the normal.
| Year | Mean | Against normal | Precip. |
|---|---|---|---|
| 2021 | 45.0°F | +1.3°F | 5.79 |
| 2022 | 42.8°F | −0.9°F | 7.92 |
| 2023 | 41.7°F | −2.0°F | – |
| 2024 | 45.1°F | +1.4°F | 2.95 |
| 2025 | 46.0°F | +2.3°F | 3.29 |
Source: observed years: ACIS, station USC00480761. A year counts only with all twelve months complete.
How does Bitter Creek (4 mi NE)'s climate compare?
Bitter Creek (4 mi NE) is warmer than 29 of the 71 places with their own NOAA record in Wyoming, and wetter than 5. Across the 7,247 U.S. stations with normals, its annual mean of 43.7°F is warmer than 14%.
In the Köppen classification computed from these normals, Bitter Creek (4 mi NE) 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 Bitter Creek (4 mi NE) 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.
- Point of Rocks, WY9 people · 15 mi NW
- Table Rock, WY0 people · 6 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 Bitter Creek (4 mi NE)'s climate
What is the coldest month at Bitter Creek (4 mi NE)?
January, with a normal high of 33°F and a normal low of 11°F. The warmest is July (86°F by day, 51°F at night).
What is the rainiest month at Bitter Creek (4 mi NE)?
May, with 1.22 in of precipitation in a normal year; the driest is January with 0.36 in.
What plant hardiness zone is Bitter Creek (4 mi NE) in?
By the same method at the station, the coldest night of a typical year reaches −26°F (17 years, 1991-2020): zone 4a.
How late can frost come at Bitter Creek (4 mi NE)?
In half of years the last 32°F night comes after June 1; in one year in ten it comes after June 21. Waiting until June 21 leaves about a one-in-ten chance of a later frost.
Nearby and next
- Wyoming climateThe statewide normals and every place in the state
- Wamsutter, WY28 miles from this station, 42.3°F a year
- Rock Springs, WY28 miles from this station, 43.7°F a year
- Green River, WY50 miles from this station, 44.1°F a year
- Baggs, WY58 miles from this station, 43.7°F a year
- Compare two placesMonth by month, side by side
Download these normals (CSV) · JSON · How these figures are made