Chemult, Oregon climate: Normal weather by month, frost dates and records
Chemult's normal year runs from 15°F December nights to 83°F July afternoons, with 26.5 inches of precipitation a year. (NOAA 1991-2020 normals)
In metric: a yearly mean of 5.4°C, December lows of −9°C, July highs of 28°C, 674 mm of precipitation a year.
- NOAA stationChemult
- Station IDUSC00351546
- Location43.23°N 121.79°W
- Elevation4,760 ft (1,451 m)
- Population (census place)48
On October 23, the normal high in Chemult is 56°F and the normal low 23°F, and the chance of measurable rain or snow is 26%.
Normals describe a typical year at the station, not a forecast. The National Weather Service forecast for Chemult.
- Jan 37° 15°
- Feb 41° 17°
- Mar 47° 21°
- Apr 53° 24°
- May 63° 30°
- Jun 72° 34°
- Jul 83° 39°
- Aug 82° 37°
- Sep 76° 30°
- Oct 61° 24°
- Nov 44° 21°
- Dec 36° 15°
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 Chemult each month?
July is the warmest month, with normal highs of 83°F; December the coldest, with normal lows of 15°F. The most precipitation falls in December (5.26 in), the least in July (0.47 in).
| Month | High | Low | Mean | Precip. | Wet days | 90°F days | Freezing nights | Daylight |
|---|---|---|---|---|---|---|---|---|
| January | 37°F | 15°F | 26.3°F | 4.59 | 13 | <1 | 30 | 9 h 20 min |
| February | 41°F | 17°F | 29.1°F | 3.25 | 10 | <1 | 27 | 10 h 30 min |
| March | 47°F | 21°F | 34.0°F | 2.73 | 11 | <1 | 29 | 11 h 50 min |
| April | 53°F | 24°F | 38.6°F | 1.57 | 10 | <1 | 27 | 13 h 20 min |
| May | 63°F | 30°F | 46.6°F | 1.49 | 9 | <1 | 19 | 14 h 40 min |
| June | 72°F | 34°F | 52.8°F | 1.26 | 5 | 1 | 12 | 15 h 20 min |
| July | 83°F | 39°F | 60.7°F | 0.47 | 2 | 7 | 6 | 15 h 10 min |
| August | 82°F | 37°F | 59.2°F | 0.64 | 3 | 6 | 8 | 14 h |
| September | 76°F | 30°F | 52.8°F | 0.53 | 3 | 2 | 17 | 12 h 30 min |
| October | 61°F | 24°F | 42.4°F | 1.58 | 6 | <1 | 26 | 11 h 10 min |
| November | 44°F | 21°F | 32.3°F | 3.16 | 12 | <1 | 27 | 9 h 50 min |
| December | 36°F | 15°F | 25.5°F | 5.26 | 14 | <1 | 30 | 9 h |
| Year (annual) | 58°F | 26°F | 41.7°F | 26.53 | 97 | 16 | 258 |
The same normals in °C and millimetres
| Month | High | Low | Mean | Precip. |
|---|---|---|---|---|
| January | 3°C | −9°C | −3.2°C | 117 mm |
| February | 5°C | −8°C | −1.6°C | 83 mm |
| March | 8°C | −6°C | 1.1°C | 69 mm |
| April | 12°C | −4°C | 3.7°C | 40 mm |
| May | 17°C | −1°C | 8.1°C | 38 mm |
| June | 22°C | 1°C | 11.6°C | 32 mm |
| July | 28°C | 4°C | 15.9°C | 12 mm |
| August | 28°C | 3°C | 15.1°C | 16 mm |
| September | 24°C | −1°C | 11.6°C | 13 mm |
| October | 16°C | −4°C | 5.8°C | 40 mm |
| November | 6°C | −6°C | 0.2°C | 80 mm |
| December | 2°C | −9°C | −3.6°C | 134 mm |
NOAA publishes no 1991-2020 snowfall normal for this station. The nearest record that keeps one, Lemolo Lake (3 mi NNW) (23 miles away), gets 196 inches of snow in a normal year; elevation and distance can change that.
Source: NOAA NCEI 1991-2020 monthly normals, station USC00351546; 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 Chemult?
Normal highs sit between 65°F and 85°F in June, July, August and September. Of those, July has the fewest days with rain (2).
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 USC00351546.
How hot and how cold does it get in Chemult?
In a normal year in Chemult, 16 days a year reach 90°F, 258 nights fall to 32°F or colder and 97 days bring measurable precipitation.
- Days at 90°F or more
- 16a normal year
- Days at 100°F or more
- fewer than 1a normal year
- Nights at 32°F or colder
- 258a normal year
- Days that stay below freezing
- 18high of 32°F or less
- Days with 0.01 inch of precipitation
- 97a normal year
The highest temperature in this station's record (since 1937) is 102°F, on July 21, 1946; the lowest is −30°F, on January 18, 1943.
The wettest calendar year on that record is 1998, with 38.60 in; the snowiest season is 1955–56, with 274.0 inches.
Source: NOAA NCEI 1991-2020 annual normals, station USC00351546; records: ACIS (NOAA Regional Climate Centers), station USC00351546. Records use complete months only; a month missing more than three days is left out.
How sunny is Chemult?
Over a year 80% of the sunlight that would reach the ground under clear skies gets through the clouds in the area around Chemult, 4.5 kWh per square metre a day. July is the sunniest month (92%) and December the cloudiest (62%).
| Month | Share of clear-sky sunshine | Sunshine, kWh/m² a day |
|---|---|---|
| January | 66% | 1.7 |
| February | 69% | 2.7 |
| March | 70% | 3.9 |
| April | 74% | 5.3 |
| May | 77% | 6.5 |
| June | 84% | 7.5 |
| July | 92% | 7.8 |
| August | 91% | 6.8 |
| September | 88% | 5.2 |
| October | 80% | 3.4 |
| November | 68% | 2.0 |
| December | 62% | 1.4 |
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 Chemult need?
A normal year in Chemult brings 8,521 heating degree days, 59% more than the median U.S. place (5,373), and 51 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 989 growing degree days a year above 50°F.
| Month | Heating | Cooling |
|---|---|---|
| January | 1,198 | 0 |
| February | 1,004 | 0 |
| March | 960 | 0 |
| April | 793 | 0 |
| May | 569 | 0 |
| June | 369 | 4 |
| July | 159 | 28 |
| August | 196 | 16 |
| September | 369 | 3 |
| October | 701 | 0 |
| November | 981 | 0 |
| December | 1,223 | 0 |
| Year (annual) | 8,521 | 51 |
Source: NOAA NCEI 1991-2020 monthly normals, station USC00351546. 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 Chemult been warmer than normal lately?
Over 43 complete years from 1941 to 2015, the station's annual mean temperature rose at a fitted 1.8°F per century (+0.10°C per decade). A fitted rate summarizes the whole record; single years swing well above and below it.
Source: trend: NOAA GHCN-Monthly v4. A year counts only with all twelve months complete.
How does Chemult's climate compare?
Chemult is warmer than 1 of the other 104 places with their own NOAA record in Oregon, and wetter than 43. Across the 7,247 U.S. stations with normals, its annual mean of 41.7°F is warmer than 9%.
In the Köppen classification computed from these normals, Chemult is Dsb: continental, dry-summer, 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 Chemult share this climate record?
Beaver Marsh 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.
- Beaver Marsh, OR121 people · 6 mi S
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 Chemult's climate
What is the coldest month in Chemult?
December, with a normal high of 36°F and a normal low of 15°F. The warmest is July (83°F by day, 39°F at night).
Does it snow in Chemult?
Yes. NOAA publishes no 1991-2020 snowfall normal for Chemult's NOAA station; the nearest record that keeps one, Lemolo Lake (3 mi NNW) (23 miles away), records 196 inches of snow in a normal year.
What is the rainiest month in Chemult?
December, with 5.26 in of precipitation in a normal year; the driest is July with 0.47 in.
What plant hardiness zone is Chemult in?
The USDA's 2023 map puts Chemult in zone 6a in ZIP code 97731, the nearest ZIP area.
Nearby and next
- Oregon climateThe statewide normals and every place in the state
- Lemolo Lake (3 mi NNW), OR24 miles from this station, 46.1°F a year
- Odell Lake-East, OR24 miles from this station, 41.1°F a year
- Crater Lake NPS Headquarters, OR29 miles from this station, 37.9°F a year
- Wickiup Dam, OR32 miles from this station, 45.5°F a year
- Compare two placesMonth by month, side by side
Download these normals (CSV) · JSON · How these figures are made