Kemmerer, Wyoming climate: Normal weather by month, frost dates and records
Kemmerer's normal year runs from 2°F January nights to 83°F July afternoons, with 9.4 inches of precipitation and 50 inches of snow a year. (NOAA 1991-2020 normals)
In metric: a yearly mean of 3.6°C, January lows of −17°C, July highs of 28°C, 239 mm of precipitation a year.
- NOAA stationKemmerer (2 mi N)
- Station IDUSC00485105
- Location41.82°N 110.53°W
- Elevation6,937 ft (2,114 m)
- From the center3 miles
- Population2,378
On October 23, the normal high in Kemmerer is 54°F and the normal low 21°F, and the chance of measurable rain or snow is 14%.
Normals describe a typical year at the station, not a forecast. The National Weather Service forecast for Kemmerer.
- Jan 31° 2°
- Feb 34° 3°
- Mar 43° 13°
- Apr 52° 21°
- May 63° 31°
- Jun 73° 37°
- Jul 83° 43°
- Aug 81° 41°
- Sep 72° 32°
- Oct 57° 23°
- Nov 42° 13°
- Dec 31° 3°
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 Kemmerer each month?
July is the warmest month, with normal highs of 83°F; January the coldest, with normal lows of 2°F. The most precipitation falls in May (1.38 in), the least in July (0.50 in).
| Month | High | Low | Mean | Precip. | Snow | Wet days | 90°F days | Freezing nights | Daylight |
|---|---|---|---|---|---|---|---|---|---|
| January | 31°F | 2°F | 16.6°F | 0.69 | 11.6 | 5 | <1 | 31 | 9 h 30 min |
| February | 34°F | 3°F | 18.5°F | 0.60 | 9.6 | 4 | <1 | 28 | 10 h 30 min |
| March | 43°F | 13°F | 27.8°F | 0.65 | 6.1 | 4 | <1 | 31 | 11 h 50 min |
| April | 52°F | 21°F | 36.8°F | 0.66 | 3.0 | 4 | <1 | 28 | 13 h 20 min |
| May | 63°F | 31°F | 46.7°F | 1.38 | 1.4 | 6 | <1 | 18 | 14 h 30 min |
| June | 73°F | 37°F | 55.0°F | 0.94 | 0.1 | 4 | <1 | 6 | 15 h 10 min |
| July | 83°F | 43°F | 62.7°F | 0.50 | 0.0 | 3 | 2 | 1 | 15 h |
| August | 81°F | 41°F | 60.9°F | 0.86 | 0.0 | 4 | 1 | 2 | 13 h 50 min |
| September | 72°F | 32°F | 52.0°F | 0.97 | 0.4 | 4 | <1 | 14 | 12 h 30 min |
| October | 57°F | 23°F | 40.0°F | 0.84 | 1.8 | 4 | <1 | 28 | 11 h 10 min |
| November | 42°F | 13°F | 27.4°F | 0.65 | 6.2 | 5 | <1 | 30 | 9 h 50 min |
| December | 31°F | 3°F | 17.0°F | 0.67 | 9.5 | 6 | <1 | 31 | 9 h 10 min |
| Year (annual) | 55°F | 22°F | 38.5°F | 9.41 | 49.7 | 53 | 4 | 246 |
The same normals in °C and millimetres
| Month | High | Low | Mean | Precip. | Snow |
|---|---|---|---|---|---|
| January | −1°C | −17°C | −8.6°C | 18 mm | 29 cm |
| February | 1°C | −16°C | −7.5°C | 15 mm | 24 cm |
| March | 6°C | −10°C | −2.3°C | 17 mm | 15 cm |
| April | 11°C | −6°C | 2.7°C | 17 mm | 8 cm |
| May | 17°C | −1°C | 8.2°C | 35 mm | 4 cm |
| June | 23°C | 3°C | 12.8°C | 24 mm | 0 cm |
| July | 28°C | 6°C | 17.1°C | 13 mm | 0 cm |
| August | 27°C | 5°C | 16.1°C | 22 mm | 0 cm |
| September | 22°C | 0°C | 11.1°C | 25 mm | 1 cm |
| October | 14°C | −5°C | 4.4°C | 21 mm | 5 cm |
| November | 6°C | −11°C | −2.6°C | 17 mm | 16 cm |
| December | 0°C | −16°C | −8.3°C | 17 mm | 24 cm |
Source: NOAA NCEI 1991-2020 monthly normals, station USC00485105; 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 Kemmerer?
Normal highs sit between 65°F and 85°F in June, July, August and September. Of those, July 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 USC00485105.
How hot and how cold does it get in Kemmerer?
In a normal year in Kemmerer, 4 days a year reach 90°F, 246 nights fall to 32°F or colder and 53 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
- 246a normal year
- Days that stay below freezing
- 68high of 32°F or less
- Days with 0.01 inch of precipitation
- 53a normal year
- Days with 1 inch of snow or more
- 16a normal year
The highest temperature in this station's record (since 1990) is 99°F, on July 12, 1990; the lowest is −39°F, on December 22, 1990.
The wettest calendar year on that record is 2017, with 16.66 in; the snowiest season is 1994–95, with 71.2 inches.
Source: NOAA NCEI 1991-2020 annual normals, station USC00485105; records: ACIS (NOAA Regional Climate Centers), station USC00485105. Records use complete months only; a month missing more than three days is left out.
How sunny is Kemmerer?
Over a year 80% of the sunlight that would reach the ground under clear skies gets through the clouds in the area around Kemmerer, 4.8 kWh per square metre a day. June is the sunniest month (86%) and December the cloudiest (70%).
| Month | Share of clear-sky sunshine | Sunshine, kWh/m² a day |
|---|---|---|
| January | 74% | 2.3 |
| February | 74% | 3.2 |
| March | 74% | 4.4 |
| April | 75% | 5.6 |
| May | 77% | 6.6 |
| June | 86% | 7.8 |
| July | 86% | 7.4 |
| August | 85% | 6.5 |
| September | 85% | 5.3 |
| October | 81% | 3.7 |
| November | 75% | 2.5 |
| December | 70% | 1.9 |
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 Kemmerer need?
A normal year in Kemmerer brings 9,695 heating degree days, 80% more than the median U.S. place (5,373), and 50 cooling degree days, 94% fewer than the median (908). Ten months need 300 or more heating degree days, a monthly mean of about 55°F or colder. For gardens and crops, NOAA counts 1,097 growing degree days a year above 50°F.
| Month | Heating | Cooling |
|---|---|---|
| January | 1,500 | 0 |
| February | 1,303 | 0 |
| March | 1,152 | 0 |
| April | 846 | 0 |
| May | 566 | 0 |
| June | 303 | 3 |
| July | 105 | 32 |
| August | 142 | 15 |
| September | 390 | 0 |
| October | 773 | 0 |
| November | 1,128 | 0 |
| December | 1,486 | 0 |
| Year (annual) | 9,695 | 50 |
Source: NOAA NCEI 1991-2020 monthly normals, station USC00485105. 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 Kemmerer been warmer than normal lately?
2025 averaged 41.7°F, 3.2°F above the 1991-2020 normal of 38.5°F. 4 of the 5 complete years since 2021 ran warmer than the normal.
| Year | Mean | Against normal | Precip. | Snow |
|---|---|---|---|---|
| 2021 | 40.9°F | +2.4°F | 14.32 | 49.9 |
| 2022 | 38.7°F | +0.2°F | 7.66 | – |
| 2023 | 37.5°F | −1.0°F | 15.69 | – |
| 2024 | 40.5°F | +2.0°F | – | – |
| 2025 | 41.7°F | +3.2°F | 7.70 | – |
Over 41 complete years from 1956 to 2023, the station's annual mean temperature rose at a fitted 1.6°F per century (+0.09°C per decade). A fitted rate summarizes the whole record; single years swing well above and below it.
Source: observed years: ACIS, station USC00485105; trend: NOAA GHCN-Monthly v4. A year counts only with all twelve months complete.
How does Kemmerer's climate compare?
Kemmerer is warmer than 10 of the other 70 places with their own NOAA record in Wyoming, and wetter than 17. Across the 7,247 U.S. stations with normals, its annual mean of 38.5°F is warmer than 4%.
In the Köppen classification computed from these normals, Kemmerer 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 Kemmerer share this climate record?
3 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.
- Diamondville, WY517 people · 3 mi S
- Oakley, WY87 people · 5 mi S
- Opal, WY64 people · 11 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 Kemmerer's climate
What is the coldest month in Kemmerer?
January, with a normal high of 31°F and a normal low of 2°F. The warmest is July (83°F by day, 43°F at night).
Does it snow in Kemmerer?
Yes: 50 inches in a normal year, falling on 22 days with 0.1 inch or more, the most in January (11.6 inches).
What is the rainiest month in Kemmerer?
May, with 1.38 in of precipitation in a normal year; the driest is July with 0.50 in.
What plant hardiness zone is Kemmerer in?
The USDA's 2023 map puts Kemmerer in zone 4b in ZIP code 83116. By the same method at Kemmerer's NOAA station, the coldest night of a typical year reaches −24°F (23 years, 1991-2020): zone 4b.
Nearby and next
- Wyoming climateThe statewide normals and every place in the state
- Fossil Butte, WY12 miles from this station, 38.4°F a year
- Sage (4 mi NNW), WY24 miles from this station, 38.6°F a year
- Fontenelle, WY27 miles from this station, 38.2°F a year
- La Barge, WY35 miles from this station, 39.1°F a year
- Compare two placesMonth by month, side by side
Download these normals (CSV) · JSON · How these figures are made