Dufur, Oregon climate: Normal weather by month, frost dates and records
Dufur's normal year runs from 27°F December nights to 89°F July afternoons, with 13.5 inches of precipitation and 22 inches of snow a year. (NOAA 1991-2020 normals)
In metric: a yearly mean of 10.3°C, December lows of −3°C, July highs of 31°C, 343 mm of precipitation a year.
- NOAA stationDufur
- Station IDUSC00352440
- Location45.45°N 121.13°W
- Elevation1,330 ft (405 m)
- Population637
On October 23, the normal high in Dufur is 60°F and the normal low 35°F, and the chance of measurable rain or snow is 33%.
Normals describe a typical year at the station, not a forecast. The National Weather Service forecast for Dufur.
- Jan 41° 27°
- Feb 47° 29°
- Mar 56° 32°
- Apr 63° 36°
- May 72° 41°
- Jun 79° 45°
- Jul 89° 51°
- Aug 88° 50°
- Sep 79° 45°
- Oct 64° 37°
- Nov 48° 31°
- Dec 39° 27°
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 Dufur each month?
July is the warmest month, with normal highs of 89°F; December the coldest, with normal lows of 27°F. The most precipitation falls in December (2.32 in), the least in August (0.24 in).
| Month | High | Low | Mean | Precip. | Snow | Wet days | 90°F days | Freezing nights | Daylight |
|---|---|---|---|---|---|---|---|---|---|
| January | 41°F | 27°F | 33.8°F | 1.91 | 6.5 | 16 | <1 | 25 | 9 h |
| February | 47°F | 29°F | 37.6°F | 1.50 | 4.1 | 12 | <1 | 21 | 10 h 20 min |
| March | 56°F | 32°F | 43.7°F | 1.17 | 0.6 | 12 | <1 | 19 | 11 h 50 min |
| April | 63°F | 36°F | 49.2°F | 1.07 | 0.1 | 10 | <1 | 11 | 13 h 30 min |
| May | 72°F | 41°F | 56.6°F | 1.14 | 0.0 | 8 | 2 | 4 | 14 h 50 min |
| June | 79°F | 45°F | 62.0°F | 0.62 | 0.0 | 5 | 4 | <1 | 15 h 40 min |
| July | 89°F | 51°F | 69.6°F | 0.28 | 0.0 | 2 | 16 | <1 | 15 h 20 min |
| August | 88°F | 50°F | 69.0°F | 0.24 | 0.0 | 2 | 14 | <1 | 14 h 10 min |
| September | 79°F | 45°F | 62.1°F | 0.44 | 0.0 | 4 | 5 | 1 | 12 h 40 min |
| October | 64°F | 37°F | 50.6°F | 1.15 | 0.2 | 9 | <1 | 9 | 11 h |
| November | 48°F | 31°F | 39.3°F | 1.68 | 1.9 | 14 | <1 | 18 | 9 h 30 min |
| December | 39°F | 27°F | 32.9°F | 2.32 | 8.1 | 17 | <1 | 25 | 8 h 40 min |
| Year (annual) | 64°F | 37°F | 50.5°F | 13.52 | 21.5 | 112 | 41 | 132 |
The same normals in °C and millimetres
| Month | High | Low | Mean | Precip. | Snow |
|---|---|---|---|---|---|
| January | 5°C | −3°C | 1.0°C | 49 mm | 17 cm |
| February | 8°C | −2°C | 3.1°C | 38 mm | 10 cm |
| March | 13°C | 0°C | 6.5°C | 30 mm | 2 cm |
| April | 17°C | 2°C | 9.6°C | 27 mm | 0 cm |
| May | 22°C | 5°C | 13.7°C | 29 mm | 0 cm |
| June | 26°C | 7°C | 16.7°C | 16 mm | 0 cm |
| July | 31°C | 10°C | 20.9°C | 7 mm | 0 cm |
| August | 31°C | 10°C | 20.6°C | 6 mm | 0 cm |
| September | 26°C | 7°C | 16.7°C | 11 mm | 0 cm |
| October | 18°C | 3°C | 10.3°C | 29 mm | 1 cm |
| November | 9°C | −1°C | 4.1°C | 43 mm | 5 cm |
| December | 4°C | −3°C | 0.5°C | 59 mm | 21 cm |
Source: NOAA NCEI 1991-2020 monthly normals, station USC00352440; 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 Dufur?
Normal highs sit between 65°F and 85°F in May, June and September. Of those, September 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 USC00352440.
When is the last frost in Dufur?
In Dufur, the last spring frost (32°F) comes after May 12 in half of years and after May 31 in one year in ten; the first autumn frost comes before October 7 in half of years and before September 22 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 121 year in 10 after May 31; 9 in 10 after April 25
- First autumn frost, half of years before
- October 71 year in 10 before September 22; 9 in 10 before October 23
NOAA puts the median frost-free season at 148 days, and the season without a hard freeze (28°F) at 185 days.
A hard freeze (28°F) comes after April 24 in half of springs and before October 24 in half of autumns.
The USDA's 2023 Plant Hardiness Zone Map puts Dufur in zone 7b in ZIP code 97021, the nearest ZIP area. By the map's own method, the average of each year's coldest night over 1991-2020, Dufur's NOAA station is in zone 7a: the coldest night of a typical year reaches 5°F (21 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 USC00352440; 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 Dufur?
In a normal year in Dufur, 41 days a year reach 90°F (7 of them 100°F or more), 132 nights fall to 32°F or colder and 112 days bring measurable precipitation.
- Days at 90°F or more
- 41a normal year
- Days at 100°F or more
- 7a normal year
- Nights at 32°F or colder
- 132a normal year
- Days that stay below freezing
- 13high of 32°F or less
- Days with 0.01 inch of precipitation
- 112a normal year
- Days with 1 inch of snow or more
- 8a normal year
The highest temperature in this station's record (since 1904) is 110°F, on July 26, 1928; the lowest is −21°F, on January 22, 1927.
The wettest calendar year on that record is 1916, with 18.53 in; the snowiest season is 1915–16, with 123.9 inches.
Source: NOAA NCEI 1991-2020 annual normals, station USC00352440; records: ACIS (NOAA Regional Climate Centers), station USC00352440. Records use complete months only; a month missing more than three days is left out.
How sunny is Dufur?
Over a year 79% of the sunlight that would reach the ground under clear skies gets through the clouds in the area around Dufur, 4.2 kWh per square metre a day. July is the sunniest month (93%) and December the cloudiest (56%).
| Month | Share of clear-sky sunshine | Sunshine, kWh/m² a day |
|---|---|---|
| January | 57% | 1.3 |
| February | 66% | 2.3 |
| March | 68% | 3.5 |
| April | 75% | 5.1 |
| May | 78% | 6.3 |
| June | 83% | 7.1 |
| July | 93% | 7.7 |
| August | 91% | 6.5 |
| September | 86% | 4.8 |
| October | 76% | 3.0 |
| November | 64% | 1.6 |
| December | 56% | 1.1 |
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 Dufur need?
A normal year in Dufur brings 5,660 heating degree days, 5% more than the median U.S. place (5,373), and 413 cooling degree days, 55% fewer than the median (908). Seven months need 300 or more heating degree days, a monthly mean of about 55°F or colder. For gardens and crops, NOAA counts 2,309 growing degree days a year above 50°F.
| Month | Heating | Cooling |
|---|---|---|
| January | 966 | 0 |
| February | 767 | 0 |
| March | 662 | 0 |
| April | 474 | 1 |
| May | 273 | 13 |
| June | 127 | 38 |
| July | 25 | 166 |
| August | 27 | 153 |
| September | 130 | 41 |
| October | 446 | 1 |
| November | 769 | 0 |
| December | 993 | 0 |
| Year (annual) | 5,660 | 413 |
Source: NOAA NCEI 1991-2020 monthly normals, station USC00352440. 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 Dufur's climate compare?
Dufur is warmer than 38 of the other 104 places with their own NOAA record in Oregon, and wetter than 20. Across the 7,247 U.S. stations with normals, its annual mean of 50.5°F is warmer than 43%.
In the Köppen classification computed from these normals, Dufur is Csb: temperate, 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 Dufur 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.
- Pine Hollow, OR472 people · 17 mi SW
- Tygh Valley, OR133 people · 15 mi S
- Wamic, OR120 people · 18 mi SW
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 Dufur's climate
What is the coldest month in Dufur?
December, with a normal high of 39°F and a normal low of 27°F. The warmest is July (89°F by day, 51°F at night).
Does it snow in Dufur?
Yes: 22 inches in a normal year, falling on 12 days with 0.1 inch or more, the most in December (8.1 inches).
What is the rainiest month in Dufur?
December, with 2.32 in of precipitation in a normal year; the driest is August with 0.24 in.
What plant hardiness zone is Dufur in?
The USDA's 2023 map puts Dufur in zone 7b in ZIP code 97021, the nearest ZIP area. By the same method at Dufur's NOAA station, the coldest night of a typical year reaches 5°F (21 years, 1991-2020): zone 7a.
How late can frost come in Dufur?
In half of years the last 32°F night comes after May 12; in one year in ten it comes after May 31. Waiting until May 31 leaves about a one-in-ten chance of a later frost.
Nearby and next
- Oregon climateThe statewide normals and every place in the state
- The Dalles, OR11 miles from this station, 53.5°F a year
- The Dalles Municipal Airport, WA12 miles from this station, 54.4°F a year
- Moro, OR20 miles from this station, 49.0°F a year
- Parkdale, OR23 miles from this station, 47.8°F a year
- Compare two placesMonth by month, side by side
Download these normals (CSV) · JSON · How these figures are made