McMinnville, Oregon climate: Normal weather by month, frost dates and records
McMinnville's normal year runs from 34°F December nights to 83°F August afternoons, with 37.6 inches of precipitation a year. (NOAA 1991-2020 normals)
In metric: a yearly mean of 11.6°C, December lows of 1°C, August highs of 28°C, 956 mm of precipitation a year.
- NOAA stationMcMinnville Municipal Airport
- Station IDUSW00094273
- Location45.19°N 123.13°W
- Elevation159 ft (49 m)
- Population35,255
On October 22, the normal high in McMinnville is 61°F and the normal low 41°F, and the chance of measurable rain or snow is 51%.
Normals describe a typical year at the station, not a forecast. The National Weather Service forecast for McMinnville.
- Jan 47° 35°
- Feb 51° 35°
- Mar 56° 37°
- Apr 61° 40°
- May 68° 44°
- Jun 74° 48°
- Jul 83° 52°
- Aug 83° 52°
- Sep 77° 48°
- Oct 64° 42°
- Nov 53° 38°
- Dec 47° 34°
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 McMinnville each month?
August is the warmest month, with normal highs of 83°F; December the coldest, with normal lows of 34°F. The most precipitation falls in December (6.45 in), the least in July (0.25 in).
| Month | High | Low | Mean | Precip. | Wet days | 90°F days | Freezing nights | Daylight |
|---|---|---|---|---|---|---|---|---|
| January | 47°F | 35°F | 41.3°F | 5.51 | 19 | <1 | 10 | 9 h 10 min |
| February | 51°F | 35°F | 43.2°F | 4.08 | 16 | <1 | 9 | 10 h 20 min |
| March | 56°F | 37°F | 46.4°F | 4.17 | 19 | <1 | 6 | 11 h 50 min |
| April | 61°F | 40°F | 50.1°F | 2.99 | 16 | <1 | 2 | 13 h 30 min |
| May | 68°F | 44°F | 56.1°F | 1.99 | 13 | <1 | <1 | 14 h 50 min |
| June | 74°F | 48°F | 61.0°F | 1.32 | 8 | 2 | <1 | 15 h 40 min |
| July | 83°F | 52°F | 67.3°F | 0.25 | 2 | 7 | <1 | 15 h 20 min |
| August | 83°F | 52°F | 67.5°F | 0.36 | 3 | 7 | <1 | 14 h 10 min |
| September | 77°F | 48°F | 62.6°F | 1.30 | 7 | 3 | <1 | 12 h 40 min |
| October | 64°F | 42°F | 53.2°F | 3.48 | 15 | <1 | 2 | 11 h |
| November | 53°F | 38°F | 45.3°F | 5.74 | 19 | <1 | 6 | 9 h 30 min |
| December | 47°F | 34°F | 40.5°F | 6.45 | 19 | <1 | 11 | 8 h 50 min |
| Year (annual) | 64°F | 42°F | 52.9°F | 37.64 | 158 | 19 | 47 |
The same normals in °C and millimetres
| Month | High | Low | Mean | Precip. |
|---|---|---|---|---|
| January | 8°C | 2°C | 5.2°C | 140 mm |
| February | 11°C | 2°C | 6.2°C | 104 mm |
| March | 13°C | 3°C | 8.0°C | 106 mm |
| April | 16°C | 4°C | 10.1°C | 76 mm |
| May | 20°C | 7°C | 13.4°C | 51 mm |
| June | 23°C | 9°C | 16.1°C | 34 mm |
| July | 28°C | 11°C | 19.6°C | 6 mm |
| August | 28°C | 11°C | 19.7°C | 9 mm |
| September | 25°C | 9°C | 17.0°C | 33 mm |
| October | 18°C | 6°C | 11.8°C | 88 mm |
| November | 11°C | 3°C | 7.4°C | 146 mm |
| December | 8°C | 1°C | 4.7°C | 164 mm |
NOAA publishes no 1991-2020 snowfall normal for this station. The nearest record that keeps one, Rex (1 mi S) (13 miles away), gets 1 inches of snow in a normal year; elevation and distance can change that.
Source: NOAA NCEI 1991-2020 monthly normals, station USW00094273; 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 McMinnville?
Normal highs sit between 65°F and 85°F in May, 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 USW00094273.
When is the last frost in McMinnville?
In McMinnville, the last spring frost (32°F) comes after April 15 in half of years and after May 6 in one year in ten; the first autumn frost comes before October 26 in half of years and before October 5 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
- April 151 year in 10 after May 6; 9 in 10 after March 18
- First autumn frost, half of years before
- October 261 year in 10 before October 5; 9 in 10 before November 19
NOAA puts the median frost-free season at 195 days, and the season without a hard freeze (28°F) at 258 days.
A hard freeze (28°F) comes after March 3 in half of springs and before November 16 in half of autumns.
The USDA's 2023 Plant Hardiness Zone Map puts McMinnville in zone 8b in ZIP code 97128, the nearest ZIP area. By the map's own method, the average of each year's coldest night over 1991-2020, McMinnville's NOAA station is in zone 8b: the coldest night of a typical year reaches 19°F (21 complete years).
Frost dates for every NOAA station in Oregon · Frost dates by ZIP code
Source: NOAA NCEI 1991-2020 annual normals (frost probabilities), station USW00094273; 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 McMinnville?
In a normal year in McMinnville, 19 days a year reach 90°F (1 of them 100°F or more), 47 nights fall to 32°F or colder and 158 days bring measurable precipitation.
- Days at 90°F or more
- 19a normal year
- Days at 100°F or more
- 1a normal year
- Nights at 32°F or colder
- 47a normal year
- Days that stay below freezing
- 1high of 32°F or less
- Days with 0.01 inch of precipitation
- 158a normal year
The highest temperature in McMinnville's official record (kept by the National Weather Service since 1894) is 114°F, on June 28, 2021; the lowest is −7°F, on January 31, 1950.
The wettest calendar year on that record is 1902, with 61.97 in; the snowiest season is 1949–50, with 48.5 inches.
Source: NOAA NCEI 1991-2020 annual normals, station USW00094273; records: ACIS (NOAA Regional Climate Centers), NWS threaded record MMVthr. Records use complete months only; a month missing more than three days is left out.
How sunny is McMinnville?
Over a year 70% of the sunlight that would reach the ground under clear skies gets through the clouds in the area around McMinnville, 3.7 kWh per square metre a day. July is the sunniest month (83%) and December the cloudiest (52%).
| Month | Share of clear-sky sunshine | Sunshine, kWh/m² a day |
|---|---|---|
| January | 54% | 1.2 |
| February | 60% | 2.1 |
| March | 59% | 3.0 |
| April | 63% | 4.3 |
| May | 68% | 5.4 |
| June | 70% | 6.0 |
| July | 83% | 6.8 |
| August | 83% | 5.8 |
| September | 78% | 4.3 |
| October | 67% | 2.6 |
| November | 56% | 1.4 |
| December | 52% | 1.0 |
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 McMinnville need?
A normal year in McMinnville brings 4,694 heating degree days, 13% fewer than the median U.S. place (5,373), and 284 cooling degree days, 69% 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 2,240 growing degree days a year above 50°F.
| Month | Heating | Cooling |
|---|---|---|
| January | 736 | 0 |
| February | 612 | 0 |
| March | 577 | 0 |
| April | 448 | 1 |
| May | 282 | 8 |
| June | 145 | 25 |
| July | 30 | 101 |
| August | 29 | 107 |
| September | 112 | 40 |
| October | 369 | 2 |
| November | 593 | 0 |
| December | 761 | 0 |
| Year (annual) | 4,694 | 284 |
Source: NOAA NCEI 1991-2020 monthly normals, station USW00094273. 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 McMinnville been warmer than normal lately?
2023 averaged 53.6°F, 0.7°F above the 1991-2020 normal of 52.9°F. 2 of the 2 complete years since 2021 ran warmer than the normal.
| Year | Mean | Against normal | Precip. |
|---|---|---|---|
| 2021 | 54.5°F | +1.6°F | 39.98 |
| 2023 | 53.6°F | +0.7°F | 35.21 |
Source: observed years: ACIS, station USW00094273. A year counts only with all twelve months complete.
How does McMinnville's climate compare?
McMinnville is warmer than 65 of the other 104 places with their own NOAA record in Oregon, and wetter than 52. Across the 7,247 U.S. stations with normals, its annual mean of 52.9°F is warmer than 53%.
In the Köppen classification computed from these normals, McMinnville 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 McMinnville share this climate record?
5 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.
- Lafayette, OR4,627 people · 4 mi N
- Dayton, OR2,663 people · 3 mi NE
- Carlton, OR2,273 people · 7 mi N
- Amity, OR1,775 people · 6 mi SW
- Yamhill, OR1,215 people · 10 mi N
Source: Census Bureau 2024 Gazetteer (place centers) and Vintage 2024 population estimates. Distance and direction from the station to each place's center.
What do McMinnville's other NOAA stations record?
One more NOAA station keeps 1991-2020 normals in or near McMinnville. This page uses McMinnville Municipal Airport; the other differs by site and elevation:
| Station | From this station | Elevation | Year | Jan low | Jul high | Precip. | Snow | Last frost |
|---|---|---|---|---|---|---|---|---|
| McMinnville station USC00355384 | 2 mi NW | 155 ft | 53.7°F | 36°F | 83°F | – | – | April 5 |
Source: NOAA NCEI 1991-2020 normals for each station. Last frost: the median last spring date of 32°F.
Questions about McMinnville's climate
What is the coldest month in McMinnville?
December, with a normal high of 47°F and a normal low of 34°F. The warmest is August (83°F by day, 52°F at night).
Does it snow in McMinnville?
Yes. NOAA publishes no 1991-2020 snowfall normal for McMinnville's NOAA station; the nearest record that keeps one, Rex (1 mi S) (13 miles away), records 1 inches of snow in a normal year.
What is the rainiest month in McMinnville?
December, with 6.45 in of precipitation in a normal year; the driest is July with 0.25 in.
What plant hardiness zone is McMinnville in?
The USDA's 2023 map puts McMinnville in zone 8b in ZIP code 97128, the nearest ZIP area. By the same method at McMinnville's NOAA station, the coldest night of a typical year reaches 19°F (21 years, 1991-2020): zone 8b.
How late can frost come in McMinnville?
In half of years the last 32°F night comes after April 15; in one year in ten it comes after May 6. Waiting until May 6 leaves about a one-in-ten chance of a later frost.
Nearby and next
- Oregon climateThe statewide normals and every place in the state
- Rex (1 mi S), OR13 miles from this station, 53.0°F a year
- Aurora, OR18 miles from this station, 54.8°F a year
- Dallas, OR19 miles from this station, 53.1°F a year
- North Willamette Experiment Station, OR19 miles from this station, 53.9°F a year
- Compare two placesMonth by month, side by side
Download these normals (CSV) · JSON · How these figures are made