Mapleton, Oregon climate: Normal weather by month, frost dates and records
Mapleton's normal year runs from 40°F December nights to 80°F August afternoons, with 84.0 inches of precipitation a year. (NOAA 1991-2020 normals)
In metric: a yearly mean of 13.1°C, December lows of 5°C, August highs of 27°C, 2,133 mm of precipitation a year.
- NOAA stationMapleton
- Station IDUSC00355204
- Location44.04°N 123.86°W
- Elevation17 ft (5 m)
- Population (census place)527
On October 23, the normal high in Mapleton is 63°F and the normal low 47°F.
Normals describe a typical year at the station, not a forecast. The National Weather Service forecast for Mapleton.
- Jan 52° 41°
- Feb 55° 41°
- Mar 58° 42°
- Apr 62° 44°
- May 68° 48°
- Jun 73° 51°
- Jul 80° 54°
- Aug 80° 55°
- Sep 77° 51°
- Oct 66° 47°
- Nov 56° 44°
- Dec 50° 40°
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 Mapleton each month?
August is the warmest month, with normal highs of 80°F; December the coldest, with normal lows of 40°F. The most precipitation falls in December (15.25 in), the least in July (0.46 in).
| Month | High | Low | Mean | Precip. | Wet days | 90°F days | Freezing nights | Daylight |
|---|---|---|---|---|---|---|---|---|
| January | 52°F | 41°F | 46.4°F | 13.41 | – | <1 | 5 | 9 h 10 min |
| February | 55°F | 41°F | 47.9°F | 9.79 | – | <1 | 4 | 10 h 30 min |
| March | 58°F | 42°F | 50.0°F | 10.22 | – | <1 | 3 | 11 h 50 min |
| April | 62°F | 44°F | 53.1°F | 7.22 | – | <1 | 1 | 13 h 20 min |
| May | 68°F | 48°F | 57.8°F | 3.88 | – | 1 | <1 | 14 h 40 min |
| June | 73°F | 51°F | 62.0°F | 2.39 | – | 1 | <1 | 15 h 30 min |
| July | 80°F | 54°F | 66.8°F | 0.46 | – | 3 | <1 | 15 h 10 min |
| August | 80°F | 55°F | 67.4°F | 0.70 | – | 3 | <1 | 14 h |
| September | 77°F | 51°F | 64.0°F | 2.09 | – | 2 | <1 | 12 h 40 min |
| October | 66°F | 47°F | 56.6°F | 6.25 | – | <1 | 1 | 11 h 10 min |
| November | 56°F | 44°F | 49.9°F | 12.32 | – | <1 | 2 | 9 h 40 min |
| December | 50°F | 40°F | 45.4°F | 15.25 | – | <1 | 6 | 8 h 50 min |
| Year (annual) | 65°F | 47°F | 55.6°F | 83.98 | – | 9 | 22 |
The same normals in °C and millimetres
| Month | High | Low | Mean | Precip. |
|---|---|---|---|---|
| January | 11°C | 5°C | 8.0°C | 341 mm |
| February | 13°C | 5°C | 8.8°C | 249 mm |
| March | 15°C | 5°C | 10.0°C | 260 mm |
| April | 17°C | 7°C | 11.7°C | 183 mm |
| May | 20°C | 9°C | 14.3°C | 99 mm |
| June | 23°C | 11°C | 16.7°C | 61 mm |
| July | 26°C | 12°C | 19.3°C | 12 mm |
| August | 27°C | 13°C | 19.7°C | 18 mm |
| September | 25°C | 11°C | 17.8°C | 53 mm |
| October | 19°C | 9°C | 13.7°C | 159 mm |
| November | 13°C | 7°C | 9.9°C | 313 mm |
| December | 10°C | 5°C | 7.4°C | 387 mm |
NOAA publishes no 1991-2020 snowfall normal for this station. The nearest record that keeps one, Florence (12 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 USC00355204; 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 Mapleton?
Normal highs sit between 65°F and 85°F in May, June, July, August, 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 USC00355204.
When is the last frost in Mapleton?
In Mapleton, the last spring frost (32°F) comes after February 15 in half of years and after March 19 in one year in ten; the first autumn frost comes before December 9 in half of years and before November 9 in one year in ten. A night at 32°F or colder comes at all in 93% of years here (NOAA).
Frost-free in half of yearsFrost in 1 to 9 years out of 10Frost most years
- Last spring frost, half of years after
- February 151 year in 10 after March 19; 9 in 10 after December 23
- First autumn frost, half of years before
- December 91 year in 10 before November 9; 9 in 10 before January 24
NOAA puts the median frost-free season at 306 days, and the season without a hard freeze (28°F) at 365 days.
A hard freeze (28°F) comes after January 6 in half of springs and before December 25 in half of autumns.
The USDA's 2023 Plant Hardiness Zone Map puts Mapleton in zone 9a in ZIP code 97453, the nearest ZIP area.
Frost dates for every NOAA station in Oregon · Frost dates by ZIP code
Source: NOAA NCEI 1991-2020 annual normals (frost probabilities), station USC00355204; USDA 2023 Plant Hardiness Zone Map, ZIP listings: PRISM Group, Oregon State University, https://prism.oregonstate.edu, accessed October 8, 2026. 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 Mapleton?
In a normal year in Mapleton, 9 days a year reach 90°F (1 of them 100°F or more) and 22 nights fall to 32°F or colder.
- Days at 90°F or more
- 9a normal year
- Days at 100°F or more
- 1a normal year
- Nights at 32°F or colder
- 22a normal year
- Days that stay below freezing
- fewer than 1high of 32°F or less
Source: NOAA NCEI 1991-2020 annual normals, station USC00355204.
How sunny is Mapleton?
Over a year 73% of the sunlight that would reach the ground under clear skies gets through the clouds in the area around Mapleton, 3.9 kWh per square metre a day. July is the sunniest month (87%) and December the cloudiest (54%).
| Month | Share of clear-sky sunshine | Sunshine, kWh/m² a day |
|---|---|---|
| January | 57% | 1.3 |
| February | 61% | 2.2 |
| March | 61% | 3.2 |
| April | 66% | 4.5 |
| May | 71% | 5.7 |
| June | 74% | 6.3 |
| July | 87% | 7.1 |
| August | 86% | 6.1 |
| September | 81% | 4.5 |
| October | 70% | 2.8 |
| November | 59% | 1.5 |
| December | 54% | 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 Mapleton need?
A normal year in Mapleton brings 3,673 heating degree days, 32% fewer than the median U.S. place (5,373), and 261 cooling degree days, 71% fewer than the median (908). Six months need 300 or more heating degree days, a monthly mean of about 55°F or colder. For gardens and crops, NOAA counts 2,599 growing degree days a year above 50°F.
| Month | Heating | Cooling |
|---|---|---|
| January | 575 | 0 |
| February | 477 | 0 |
| March | 465 | 0 |
| April | 359 | 2 |
| May | 231 | 9 |
| June | 118 | 27 |
| July | 25 | 79 |
| August | 23 | 97 |
| September | 75 | 43 |
| October | 266 | 5 |
| November | 452 | 0 |
| December | 608 | 0 |
| Year (annual) | 3,673 | 261 |
Source: NOAA NCEI 1991-2020 monthly normals, station USC00355204. 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 Mapleton's climate compare?
Mapleton is warmer than 100 of the other 104 places with their own NOAA record in Oregon, and wetter than 92. Across the 7,247 U.S. stations with normals, its annual mean of 55.6°F is warmer than 62%.
In the Köppen classification computed from these normals, Mapleton 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.
Questions about Mapleton's climate
What is the coldest month in Mapleton?
December, with a normal high of 50°F and a normal low of 40°F. The warmest is August (80°F by day, 55°F at night).
Does it snow in Mapleton?
Rarely. NOAA publishes no 1991-2020 snowfall normal for Mapleton's NOAA station; the nearest record that keeps one, Florence (12 miles away), records 1 inches of snow in a normal year.
What is the rainiest month in Mapleton?
December, with 15.25 in of precipitation in a normal year; the driest is July with 0.46 in.
What plant hardiness zone is Mapleton in?
The USDA's 2023 map puts Mapleton in zone 9a in ZIP code 97453, the nearest ZIP area.
How late can frost come in Mapleton?
In half of years the last 32°F night comes after February 15; in one year in ten it comes after March 19. Waiting until March 19 leaves about a one-in-ten chance of a later frost.
Nearby and next
- Oregon climateThe statewide normals and every place in the state
- Florence, OR12 miles from this station, 50.3°F a year
- Honeyman State Park, OR14 miles from this station, 50.9°F a year
- Yachats, OR24 miles from this station, 52.3°F a year
- Fern Ridge-Veneta, OR24 miles from this station, 52.1°F a year
- Compare two placesMonth by month, side by side
Download these normals (CSV) · JSON · How these figures are made