Brothers, Oregon climate: Climate normals at a NOAA weather station
Brothers's normal year runs from 17°F December nights to 82°F July afternoons. (NOAA 1991-2020 normals)
In metric: a yearly mean of 6.2°C, December lows of −8°C, July highs of 28°C.
- NOAA stationBrothers
- Station IDUSC00351067
- Location43.81°N 120.60°W
- Elevation4,640 ft (1,414 m)
On October 23, the normal high in Brothers is 56°F and the normal low 26°F.
Normals describe a typical year at the station, not a forecast. The National Weather Service forecast for Brothers.
- Jan 37° 18°
- Feb 40° 20°
- Mar 47° 22°
- Apr 54° 24°
- May 63° 32°
- Jun 71° 38°
- Jul 82° 45°
- Aug 81° 43°
- Sep 73° 36°
- Oct 60° 28°
- Nov 46° 21°
- Dec 37° 17°
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 Brothers each month?
July is the warmest month, with normal highs of 82°F; December the coldest, with normal lows of 17°F.
| Month | High | Low | Mean | Wet days | 90°F days | Freezing nights | Daylight |
|---|---|---|---|---|---|---|---|
| January | 37°F | 18°F | 27.7°F | – | <1 | 30 | 9 h 20 min |
| February | 40°F | 20°F | 30.1°F | – | <1 | 27 | 10 h 30 min |
| March | 47°F | 22°F | 34.6°F | – | <1 | 29 | 11 h 50 min |
| April | 54°F | 24°F | 39.3°F | – | <1 | 25 | 13 h 20 min |
| May | 63°F | 32°F | 47.4°F | – | <1 | 17 | 14 h 40 min |
| June | 71°F | 38°F | 54.3°F | – | 1 | 8 | 15 h 30 min |
| July | 82°F | 45°F | 63.4°F | – | 7 | 2 | 15 h 10 min |
| August | 81°F | 43°F | 62.3°F | – | 4 | 2 | 14 h |
| September | 73°F | 36°F | 54.7°F | – | 1 | 11 | 12 h 30 min |
| October | 60°F | 28°F | 43.9°F | – | <1 | 23 | 11 h 10 min |
| November | 46°F | 21°F | 33.4°F | – | <1 | 26 | 9 h 40 min |
| December | 37°F | 17°F | 26.8°F | – | <1 | 30 | 9 h |
| Year (annual) | 58°F | 29°F | 43.1°F | – | 13 | 229 |
The same normals in °C and millimetres
| Month | High | Low | Mean |
|---|---|---|---|
| January | 3°C | −8°C | −2.4°C |
| February | 4°C | −7°C | −1.1°C |
| March | 8°C | −6°C | 1.4°C |
| April | 12°C | −4°C | 4.1°C |
| May | 17°C | 0°C | 8.6°C |
| June | 21°C | 3°C | 12.4°C |
| July | 28°C | 7°C | 17.4°C |
| August | 27°C | 6°C | 16.8°C |
| September | 23°C | 2°C | 12.6°C |
| October | 15°C | −2°C | 6.6°C |
| November | 8°C | −6°C | 0.8°C |
| December | 3°C | −8°C | −2.9°C |
NOAA publishes no 1991-2020 snowfall normal for this station. The nearest record that keeps one, Barnes Station (21 miles away), gets 31 inches of snow in a normal year; elevation and distance can change that.
Source: NOAA NCEI 1991-2020 monthly normals, station USC00351067; 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 Brothers?
Normal highs sit between 65°F and 85°F in June, July, August and September.
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 USC00351067.
How hot and how cold does it get at Brothers?
In a normal year in Brothers, 13 days a year reach 90°F and 229 nights fall to 32°F or colder.
- Days at 90°F or more
- 13a normal year
- Days at 100°F or more
- fewer than 1a normal year
- Nights at 32°F or colder
- 229a normal year
- Days that stay below freezing
- 23high of 32°F or less
The highest temperature in this station's record (since 1959) is 103°F, on August 4, 1961; the lowest is −30°F, on January 22, 1962.
The wettest calendar year on that record is 1968, with 14.99 in; the snowiest season is 2005–06, with 57.5 inches.
Source: NOAA NCEI 1991-2020 annual normals, station USC00351067; records: ACIS (NOAA Regional Climate Centers), station USC00351067. Records use complete months only; a month missing more than three days is left out.
How sunny is it at Brothers?
Over a year 81% of the sunlight that would reach the ground under clear skies gets through the clouds at Brothers, 4.6 kWh per square metre a day. July is the sunniest month (93%) and December the cloudiest (62%).
| Month | Share of clear-sky sunshine | Sunshine, kWh/m² a day |
|---|---|---|
| January | 66% | 1.7 |
| February | 69% | 2.7 |
| March | 71% | 4.0 |
| April | 75% | 5.5 |
| May | 78% | 6.5 |
| June | 85% | 7.6 |
| July | 93% | 7.9 |
| August | 91% | 6.8 |
| September | 88% | 5.3 |
| October | 80% | 3.5 |
| November | 70% | 2.0 |
| December | 62% | 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 Brothers record?
A normal year at Brothers brings 8,068 heating degree days, 50% more than the median U.S. place (5,373), and 126 cooling degree days, 86% fewer than the median (908). Ten months need 300 or more heating degree days, a monthly mean of about 55°F or colder. For gardens and crops, NOAA counts 1,276 growing degree days a year above 50°F.
| Month | Heating | Cooling |
|---|---|---|
| January | 1,156 | 0 |
| February | 979 | 0 |
| March | 943 | 0 |
| April | 771 | 0 |
| May | 547 | 1 |
| June | 328 | 7 |
| July | 112 | 62 |
| August | 130 | 46 |
| September | 318 | 9 |
| October | 654 | 0 |
| November | 946 | 0 |
| December | 1,184 | 0 |
| Year (annual) | 8,068 | 126 |
Source: NOAA NCEI 1991-2020 monthly normals, station USC00351067. 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 Brothers's climate compare?
Brothers is warmer than 4 of the 105 places with their own NOAA record in Oregon. Across the 7,247 U.S. stations with normals, its annual mean of 43.1°F is warmer than 12%.
Source: NOAA NCEI 1991-2020 normals for every station PlainClimate covers.
Questions about Brothers's climate
What is the coldest month at Brothers?
December, with a normal high of 37°F and a normal low of 17°F. The warmest is July (82°F by day, 45°F at night).
Does it snow at Brothers?
Yes. NOAA publishes no 1991-2020 snowfall normal for the station; the nearest record that keeps one, Barnes Station (21 miles away), records 31 inches of snow in a normal year.
What plant hardiness zone is Brothers in?
The USDA's 2023 map puts Brothers in zone 6a in ZIP code 97712, the nearest ZIP area.
Nearby and next
- Oregon climateThe statewide normals and every place in the state
- Barnes Station, OR21 miles from this station, 48.9°F a year
- Prineville, OR36 miles from this station, 49.4°F a year
- Paulina, OR37 miles from this station, 46.6°F a year
- Bend, OR38 miles from this station, 47.6°F a year
- Compare two placesMonth by month, side by side
Download these normals (CSV) · JSON · How these figures are made