Oregon, Missouri climate: Normal weather by month, frost dates and records
Oregon's normal year runs from 16°F January nights to 87°F July afternoons. (NOAA 1991-2020 normals)
In metric: a yearly mean of 11.5°C, January lows of −9°C, July highs of 30°C.
- NOAA stationOregon
- Station IDUSC00236357
- Location39.98°N 95.15°W
- Elevation1,058 ft (323 m)
- Population832
On October 23, the normal high in Oregon is 63°F and the normal low 41°F.
Normals describe a typical year at the station, not a forecast. The National Weather Service forecast for Oregon.
- Jan 35° 16°
- Feb 40° 20°
- Mar 53° 31°
- Apr 64° 42°
- May 74° 53°
- Jun 83° 63°
- Jul 87° 67°
- Aug 86° 65°
- Sep 78° 56°
- Oct 66° 44°
- Nov 51° 32°
- Dec 39° 21°
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 Oregon each month?
July is the warmest month, with normal highs of 87°F; January the coldest, with normal lows of 16°F.
| Month | High | Low | Mean | Wet days | 90°F days | Freezing nights | Daylight |
|---|---|---|---|---|---|---|---|
| January | 35°F | 16°F | 25.3°F | – | <1 | 29 | 9 h 40 min |
| February | 40°F | 20°F | 30.3°F | – | <1 | 24 | 10 h 40 min |
| March | 53°F | 31°F | 41.9°F | – | <1 | 18 | 11 h 50 min |
| April | 64°F | 42°F | 52.5°F | – | <1 | 5 | 13 h 10 min |
| May | 74°F | 53°F | 63.6°F | – | 1 | <1 | 14 h 20 min |
| June | 83°F | 63°F | 73.0°F | – | 6 | <1 | 15 h |
| July | 87°F | 67°F | 76.9°F | – | 11 | <1 | 14 h 50 min |
| August | 86°F | 65°F | 75.2°F | – | 9 | <1 | 13 h 50 min |
| September | 78°F | 56°F | 67.1°F | – | 3 | <1 | 12 h 30 min |
| October | 66°F | 44°F | 54.8°F | – | <1 | 4 | 11 h 10 min |
| November | 51°F | 32°F | 41.4°F | – | <1 | 15 | 10 h |
| December | 39°F | 21°F | 30.3°F | – | <1 | 27 | 9 h 20 min |
| Year (annual) | 63°F | 42°F | 52.7°F | – | 31 | 123 |
The same normals in °C and millimetres
| Month | High | Low | Mean |
|---|---|---|---|
| January | 2°C | −9°C | −3.7°C |
| February | 5°C | −6°C | −0.9°C |
| March | 11°C | 0°C | 5.5°C |
| April | 18°C | 5°C | 11.4°C |
| May | 23°C | 12°C | 17.6°C |
| June | 28°C | 17°C | 22.8°C |
| July | 30°C | 19°C | 24.9°C |
| August | 30°C | 18°C | 24.0°C |
| September | 26°C | 13°C | 19.5°C |
| October | 19°C | 6°C | 12.7°C |
| November | 11°C | 0°C | 5.2°C |
| December | 4°C | −6°C | −0.9°C |
NOAA publishes no 1991-2020 snowfall normal for this station. The nearest record that keeps one, Troy (11 miles away), gets 21 inches of snow in a normal year; elevation and distance can change that.
Source: NOAA NCEI 1991-2020 monthly normals, station USC00236357; 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 Oregon?
Normal highs sit between 65°F and 85°F in May, June, September and October.
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 USC00236357.
When is the last frost in Oregon?
In Oregon, the last spring frost (32°F) comes after April 16 in half of years and after April 30 in one year in ten; the first autumn frost comes before October 20 in half of years and before October 3 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 161 year in 10 after April 30; 9 in 10 after April 2
- First autumn frost, half of years before
- October 201 year in 10 before October 3; 9 in 10 before November 1
NOAA puts the median frost-free season at 186 days, and the season without a hard freeze (28°F) at 205 days.
A hard freeze (28°F) comes after April 6 in half of springs and before October 30 in half of autumns.
The USDA's 2023 Plant Hardiness Zone Map puts Oregon in zone 6a in ZIP code 64473, the nearest ZIP area. By the map's own method, the average of each year's coldest night over 1991-2020, Oregon's NOAA station is in zone 6a: the coldest night of a typical year reaches −7°F (15 complete years).
Frost dates for every NOAA station in Missouri · Frost dates by ZIP code
Source: NOAA NCEI 1991-2020 annual normals (frost probabilities), station USC00236357; 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 Oregon?
In a normal year in Oregon, 31 days a year reach 90°F (1 of them 100°F or more) and 123 nights fall to 32°F or colder.
- Days at 90°F or more
- 31a normal year
- Days at 100°F or more
- 1a normal year
- Nights at 32°F or colder
- 123a normal year
- Days that stay below freezing
- 37high of 32°F or less
The highest temperature in this station's record (since 1893) is 112°F, on July 15, 1934; the lowest is −26°F, on February 12, 1899.
The wettest calendar year on that record is 1961, with 50.33 in; the snowiest season is 1978–79, with 40.5 inches.
Source: NOAA NCEI 1991-2020 annual normals, station USC00236357; records: ACIS (NOAA Regional Climate Centers), station USC00236357. Records use complete months only; a month missing more than three days is left out.
How sunny is Oregon?
Over a year 77% of the sunlight that would reach the ground under clear skies gets through the clouds in the area around Oregon, 4.3 kWh per square metre a day. July is the sunniest month (83%) and March the cloudiest (70%).
| Month | Share of clear-sky sunshine | Sunshine, kWh/m² a day |
|---|---|---|
| January | 71% | 2.2 |
| February | 72% | 3.0 |
| March | 70% | 3.9 |
| April | 71% | 5.0 |
| May | 74% | 5.8 |
| June | 81% | 6.6 |
| July | 83% | 6.5 |
| August | 82% | 5.8 |
| September | 82% | 4.8 |
| October | 77% | 3.5 |
| November | 76% | 2.5 |
| December | 72% | 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 Oregon need?
A normal year in Oregon brings 5,662 heating degree days, 5% more than the median U.S. place (5,373), and 1,208 cooling degree days, 33% more 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 3,738 growing degree days a year above 50°F.
| Month | Heating | Cooling |
|---|---|---|
| January | 1,231 | 0 |
| February | 973 | 0 |
| March | 721 | 3 |
| April | 389 | 16 |
| May | 134 | 89 |
| June | 12 | 251 |
| July | 2 | 369 |
| August | 4 | 320 |
| September | 77 | 138 |
| October | 338 | 21 |
| November | 707 | 0 |
| December | 1,076 | 0 |
| Year (annual) | 5,662 | 1,208 |
Source: NOAA NCEI 1991-2020 monthly normals, station USC00236357. 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 Oregon been warmer than normal lately?
Over 81 complete years from 1893 to 2017, the station's annual mean temperature rose at a fitted 1.0°F per century (+0.05°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 Oregon's climate compare?
Oregon is warmer than 21 of the other 133 places with their own NOAA record in Missouri. Across the 7,247 U.S. stations with normals, its annual mean of 52.7°F is warmer than 52%.
Source: NOAA NCEI 1991-2020 normals for every station PlainClimate covers.
Which places near Oregon share this climate record?
8 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.
- Highland, KS932 people · 10 mi SW
- Maitland, MO280 people · 16 mi N
- Forest City, MO248 people · 2 mi W
- Rulo, NE148 people · 16 mi W
- Denton, KS133 people · 18 mi S
- White Cloud, KS115 people · 8 mi W
- Severance, KS79 people · 16 mi S
- Leona, KS36 people · 16 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 Oregon's climate
What is the coldest month in Oregon?
January, with a normal high of 35°F and a normal low of 16°F. The warmest is July (87°F by day, 67°F at night).
Does it snow in Oregon?
Yes. NOAA publishes no 1991-2020 snowfall normal for Oregon's NOAA station; the nearest record that keeps one, Troy (11 miles away), records 21 inches of snow in a normal year.
What plant hardiness zone is Oregon in?
The USDA's 2023 map puts Oregon in zone 6a in ZIP code 64473, the nearest ZIP area. By the same method at Oregon's NOAA station, the coldest night of a typical year reaches −7°F (15 years, 1991-2020): zone 6a.
How late can frost come in Oregon?
In half of years the last 32°F night comes after April 16; in one year in ten it comes after April 30. Waiting until April 30 leaves about a one-in-ten chance of a later frost.
Nearby and next
- Missouri climateThe statewide normals and every place in the state
- Troy, KS11 miles from this station, 53.1°F a year
- St. Joseph, MO19 miles from this station, 53.7°F a year
- Hiawatha, KS23 miles from this station, 52.5°F a year
- Falls City, NE25 miles from this station, 53.1°F a year
- Compare two placesMonth by month, side by side
Download these normals (CSV) · JSON · How these figures are made