Drewsey, Oregon climate: Climate normals at a NOAA weather station
Drewsey's normal year runs from 15°F December nights to 90°F July afternoons, with 11.1 inches of precipitation and 36 inches of snow a year. (NOAA 1991-2020 normals)
In metric: a yearly mean of 7.7°C, December lows of −9°C, July highs of 32°C, 283 mm of precipitation a year.
- NOAA stationDrewsey
- Station IDUSC00352415
- Location43.81°N 118.38°W
- Elevation3,515 ft (1,071 m)
On October 22, the normal high in Drewsey is 60°F and the normal low 25°F, and the chance of measurable rain or snow is 20%.
Normals describe a typical year at the station, not a forecast. The National Weather Service forecast for Drewsey.
- Jan 35° 17°
- Feb 42° 20°
- Mar 52° 25°
- Apr 60° 29°
- May 70° 37°
- Jun 78° 43°
- Jul 90° 49°
- Aug 88° 46°
- Sep 79° 37°
- Oct 64° 27°
- Nov 46° 21°
- Dec 35° 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 at Drewsey each month?
July is the warmest month, with normal highs of 90°F; December the coldest, with normal lows of 15°F. The most precipitation falls in December (1.58 in), the least in August (0.28 in).
| Month | High | Low | Mean | Precip. | Snow | Wet days | 90°F days | Freezing nights | Daylight |
|---|---|---|---|---|---|---|---|---|---|
| January | 35°F | 17°F | 25.9°F | 1.52 | 10.2 | 10 | <1 | 30 | 9 h 20 min |
| February | 42°F | 20°F | 30.9°F | 1.03 | 7.1 | 8 | <1 | 26 | 10 h 30 min |
| March | 52°F | 25°F | 38.7°F | 1.01 | 1.9 | 8 | <1 | 26 | 11 h 50 min |
| April | 60°F | 29°F | 44.3°F | 0.90 | 0.6 | 9 | <1 | 20 | 13 h 20 min |
| May | 70°F | 37°F | 53.2°F | 1.11 | 0.0 | 8 | 1 | 8 | 14 h 40 min |
| June | 78°F | 43°F | 60.5°F | 0.90 | 0.0 | 6 | 3 | 1 | 15 h 30 min |
| July | 90°F | 49°F | 69.2°F | 0.37 | 0.0 | 3 | 19 | <1 | 15 h 10 min |
| August | 88°F | 46°F | 66.7°F | 0.28 | 0.0 | 3 | 15 | 1 | 14 h |
| September | 79°F | 37°F | 57.6°F | 0.44 | 0.0 | 3 | 4 | 10 | 12 h 30 min |
| October | 64°F | 27°F | 45.3°F | 0.82 | 0.1 | 5 | <1 | 22 | 11 h 10 min |
| November | 46°F | 21°F | 33.4°F | 1.17 | 3.6 | 10 | <1 | 26 | 9 h 40 min |
| December | 35°F | 15°F | 24.9°F | 1.58 | 12.4 | 10 | <1 | 29 | 9 h |
| Year (annual) | 61°F | 30°F | 45.9°F | 11.13 | 35.9 | 81 | 41 | 197 |
The same normals in °C and millimetres
| Month | High | Low | Mean | Precip. | Snow |
|---|---|---|---|---|---|
| January | 2°C | −9°C | −3.4°C | 39 mm | 26 cm |
| February | 5°C | −6°C | −0.6°C | 26 mm | 18 cm |
| March | 11°C | −4°C | 3.7°C | 26 mm | 5 cm |
| April | 16°C | −2°C | 6.8°C | 23 mm | 2 cm |
| May | 21°C | 3°C | 11.8°C | 28 mm | 0 cm |
| June | 25°C | 6°C | 15.8°C | 23 mm | 0 cm |
| July | 32°C | 9°C | 20.7°C | 9 mm | 0 cm |
| August | 31°C | 8°C | 19.3°C | 7 mm | 0 cm |
| September | 26°C | 3°C | 14.2°C | 11 mm | 0 cm |
| October | 18°C | −3°C | 7.4°C | 21 mm | 0 cm |
| November | 8°C | −6°C | 0.8°C | 30 mm | 9 cm |
| December | 1°C | −9°C | −3.9°C | 40 mm | 31 cm |
Source: NOAA NCEI 1991-2020 monthly normals, station USC00352415; 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 Drewsey?
Normal highs sit between 65°F and 85°F in May, June and September. Of those, September 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 USC00352415.
When is the last frost at Drewsey?
In Drewsey, the last spring frost (32°F) comes after June 5 in half of years and after June 26 in one year in ten; the first autumn frost comes before September 5 in half of years and before August 20 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 51 year in 10 after June 26; 9 in 10 after May 17
- First autumn frost, half of years before
- September 51 year in 10 before August 20; 9 in 10 before September 21
NOAA puts the median frost-free season at 91 days, and the season without a hard freeze (28°F) at 122 days.
A hard freeze (28°F) comes after May 18 in half of springs and before September 17 in half of autumns.
The USDA's 2023 Plant Hardiness Zone Map puts Drewsey in zone 6a in ZIP code 97904, the nearest ZIP area. By the map's own method, the average of each year's coldest night over 1991-2020, the station is in zone 5b: the coldest night of a typical year reaches −12°F (22 complete years); the map interpolates between stations and terrain, so the station and the ZIP area can differ by half a zone.
Frost dates for every NOAA station in Oregon · Frost dates by ZIP code
Source: NOAA NCEI 1991-2020 annual normals (frost probabilities), station USC00352415; 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 at Drewsey?
In a normal year in Drewsey, 41 days a year reach 90°F (3 of them 100°F or more), 197 nights fall to 32°F or colder and 81 days bring measurable precipitation.
- Days at 90°F or more
- 41a normal year
- Days at 100°F or more
- 3a normal year
- Nights at 32°F or colder
- 197a normal year
- Days that stay below freezing
- 25high of 32°F or less
- Days with 0.01 inch of precipitation
- 81a normal year
- Days with 1 inch of snow or more
- 14a normal year
The highest temperature in this station's record (since 1970) is 107°F, on July 23, 2003; the lowest is −36°F, on December 9, 1972.
The wettest calendar year on that record is 2005, with 17.76 in; the snowiest season is 2003–04, with 58.8 inches.
Source: NOAA NCEI 1991-2020 annual normals, station USC00352415; records: ACIS (NOAA Regional Climate Centers), station USC00352415. Records use complete months only; a month missing more than three days is left out.
How sunny is it at Drewsey?
Over a year 80% of the sunlight that would reach the ground under clear skies gets through the clouds at Drewsey, 4.5 kWh per square metre a day. July is the sunniest month (92%) and December the cloudiest (59%).
| Month | Share of clear-sky sunshine | Sunshine, kWh/m² a day |
|---|---|---|
| January | 63% | 1.7 |
| February | 69% | 2.7 |
| March | 71% | 3.9 |
| April | 76% | 5.5 |
| May | 78% | 6.6 |
| June | 85% | 7.5 |
| July | 92% | 7.8 |
| August | 91% | 6.7 |
| September | 88% | 5.2 |
| October | 82% | 3.5 |
| November | 70% | 2.0 |
| December | 59% | 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 many heating and cooling degree days does Drewsey record?
A normal year at Drewsey brings 7,252 heating degree days, 35% more than the median U.S. place (5,373), and 313 cooling degree days, 66% 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 1,897 growing degree days a year above 50°F.
| Month | Heating | Cooling |
|---|---|---|
| January | 1,211 | 0 |
| February | 953 | 0 |
| March | 817 | 0 |
| April | 619 | 0 |
| May | 371 | 5 |
| June | 169 | 34 |
| July | 30 | 160 |
| August | 49 | 103 |
| September | 233 | 12 |
| October | 612 | 0 |
| November | 947 | 0 |
| December | 1,243 | 0 |
| Year (annual) | 7,252 | 313 |
Source: NOAA NCEI 1991-2020 monthly normals, station USC00352415. 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 Drewsey's climate compare?
Drewsey is warmer than 8 of the 105 places with their own NOAA record in Oregon, and wetter than 13. Across the 7,247 U.S. stations with normals, its annual mean of 45.9°F is warmer than 23%.
In the Köppen classification computed from these normals, Drewsey 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 Drewsey share this climate record?
Juntura 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.
- Juntura, OR20 people · 15 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 Drewsey's climate
What is the coldest month at Drewsey?
December, with a normal high of 35°F and a normal low of 15°F. The warmest is July (90°F by day, 49°F at night).
Does it snow at Drewsey?
Yes: 36 inches in a normal year, falling on 19 days with 0.1 inch or more, the most in December (12.4 inches).
What is the rainiest month at Drewsey?
December, with 1.58 in of precipitation in a normal year; the driest is August with 0.28 in.
What plant hardiness zone is Drewsey in?
The USDA's 2023 map puts Drewsey in zone 6a in ZIP code 97904, the nearest ZIP area. By the same method at the station, the coldest night of a typical year reaches −12°F (22 years, 1991-2020): zone 5b.
How late can frost come at Drewsey?
In half of years the last 32°F night comes after June 5; in one year in ten it comes after June 26. Waiting until June 26 leaves about a one-in-ten chance of a later frost.
Nearby and next
- Oregon climateThe statewide normals and every place in the state
- Riverside (7 mi SSW), OR26 miles from this station, 48.5°F a year
- Burns, OR32 miles from this station, 46.0°F a year
- Westfall, OR35 miles from this station, 50.4°F a year
- Seneca, OR37 miles from this station, 40.5°F a year
- Compare two placesMonth by month, side by side
Download these normals (CSV) · JSON · How these figures are made