Hart Mountain Refuge, Oregon climate: Climate normals at a NOAA weather station
Hart Mountain Refuge's normal year runs from 20°F December nights to 83°F July afternoons, with 15.3 inches of precipitation a year. (NOAA 1991-2020 normals)
In metric: a yearly mean of 7.3°C, December lows of −7°C, July highs of 28°C, 388 mm of precipitation a year.
- NOAA stationHart Mountain Refuge
- Station IDUSC00353692
- Location42.55°N 119.66°W
- Elevation5,618 ft (1,712 m)
On October 23, the normal high in Hart Mountain Refuge is 58°F and the normal low 30°F.
Normals describe a typical year at the station, not a forecast. The National Weather Service forecast for Hart Mountain Refuge.
- Jan 41° 22°
- Feb 42° 21°
- Mar 48° 25°
- Apr 53° 28°
- May 62° 35°
- Jun 72° 40°
- Jul 83° 47°
- Aug 83° 46°
- Sep 74° 39°
- Oct 61° 31°
- Nov 47° 24°
- Dec 39° 20°
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 Hart Mountain Refuge each month?
July is the warmest month, with normal highs of 83°F; December the coldest, with normal lows of 20°F. The most precipitation falls in May (2.09 in), the least in August (0.44 in).
| Month | High | Low | Mean | Precip. | Wet days | 90°F days | Freezing nights | Daylight |
|---|---|---|---|---|---|---|---|---|
| January | 41°F | 22°F | 31.4°F | 1.27 | – | <1 | 28 | 9 h 20 min |
| February | 42°F | 21°F | 31.5°F | 1.48 | – | <1 | 26 | 10 h 30 min |
| March | 48°F | 25°F | 36.3°F | 1.64 | – | <1 | 27 | 11 h 50 min |
| April | 53°F | 28°F | 40.5°F | 1.82 | – | <1 | 23 | 13 h 20 min |
| May | 62°F | 35°F | 48.6°F | 2.09 | – | <1 | 15 | 14 h 30 min |
| June | 72°F | 40°F | 55.9°F | 1.24 | – | 1 | 6 | 15 h 20 min |
| July | 83°F | 47°F | 64.9°F | 0.49 | – | 7 | 1 | 15 h |
| August | 83°F | 46°F | 64.1°F | 0.44 | – | 5 | 2 | 14 h |
| September | 74°F | 39°F | 56.4°F | 0.71 | – | 1 | 7 | 12 h 30 min |
| October | 61°F | 31°F | 46.4°F | 1.37 | – | <1 | 19 | 11 h 10 min |
| November | 47°F | 24°F | 35.7°F | 1.44 | – | <1 | 25 | 9 h 50 min |
| December | 39°F | 20°F | 29.4°F | 1.30 | – | <1 | 29 | 9 h 10 min |
| Year (annual) | 59°F | 31°F | 45.1°F | 15.29 | – | 13 | 207 |
The same normals in °C and millimetres
| Month | High | Low | Mean | Precip. |
|---|---|---|---|---|
| January | 5°C | −6°C | −0.3°C | 32 mm |
| February | 5°C | −6°C | −0.3°C | 38 mm |
| March | 9°C | −4°C | 2.4°C | 42 mm |
| April | 12°C | −2°C | 4.7°C | 46 mm |
| May | 17°C | 2°C | 9.2°C | 53 mm |
| June | 22°C | 5°C | 13.3°C | 31 mm |
| July | 28°C | 8°C | 18.3°C | 12 mm |
| August | 28°C | 8°C | 17.8°C | 11 mm |
| September | 23°C | 4°C | 13.6°C | 18 mm |
| October | 16°C | 0°C | 8.0°C | 35 mm |
| November | 8°C | −4°C | 2.1°C | 37 mm |
| December | 4°C | −7°C | −1.4°C | 33 mm |
NOAA publishes no 1991-2020 snowfall normal for this station, and no record within 25 miles keeps one, so snow is left out here rather than estimated.
Source: NOAA NCEI 1991-2020 monthly normals, station USC00353692; 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 Hart Mountain Refuge?
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 USC00353692.
How hot and how cold does it get at Hart Mountain Refuge?
In a normal year in Hart Mountain Refuge, 13 days a year reach 90°F and 207 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
- 207a normal year
- Days that stay below freezing
- 16high of 32°F or less
The highest temperature in this station's record (since 1939) is 103°F, on July 11, 2002; the lowest is −32°F, on December 23, 1990.
The wettest calendar year on that record is 1981, with 18.93 in; the snowiest season is 1950–51, with 119.5 inches.
Source: NOAA NCEI 1991-2020 annual normals, station USC00353692; records: ACIS (NOAA Regional Climate Centers), station USC00353692. Records use complete months only; a month missing more than three days is left out.
How sunny is it at Hart Mountain Refuge?
Over a year 81% of the sunlight that would reach the ground under clear skies gets through the clouds at Hart Mountain Refuge, 4.7 kWh per square metre a day. July is the sunniest month (92%) and December the cloudiest (61%).
| Month | Share of clear-sky sunshine | Sunshine, kWh/m² a day |
|---|---|---|
| January | 65% | 1.8 |
| February | 69% | 2.8 |
| March | 71% | 4.0 |
| April | 75% | 5.5 |
| May | 79% | 6.7 |
| June | 86% | 7.7 |
| July | 92% | 7.9 |
| August | 91% | 6.8 |
| September | 89% | 5.4 |
| October | 82% | 3.7 |
| November | 71% | 2.2 |
| December | 61% | 1.5 |
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 Hart Mountain Refuge record?
A normal year at Hart Mountain Refuge brings 7,396 heating degree days, 38% more than the median U.S. place (5,373), and 163 cooling degree days, 82% fewer than the median (908). Eight months need 300 or more heating degree days, a monthly mean of about 55°F or colder. For gardens and crops, NOAA counts 1,497 growing degree days a year above 50°F.
| Month | Heating | Cooling |
|---|---|---|
| January | 1,042 | 0 |
| February | 938 | 0 |
| March | 888 | 0 |
| April | 733 | 0 |
| May | 511 | 1 |
| June | 283 | 12 |
| July | 81 | 79 |
| August | 90 | 60 |
| September | 269 | 10 |
| October | 577 | 0 |
| November | 880 | 0 |
| December | 1,103 | 0 |
| Year (annual) | 7,396 | 163 |
Source: NOAA NCEI 1991-2020 monthly normals, station USC00353692. 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.
Have recent years at Hart Mountain Refuge been warmer than normal?
Over 38 complete years from 1940 to 2016, the station's annual mean temperature rose at a fitted 3.0°F per century (+0.16°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 Hart Mountain Refuge's climate compare?
Hart Mountain Refuge is warmer than 6 of the 105 places with their own NOAA record in Oregon, and wetter than 32. Across the 7,247 U.S. stations with normals, its annual mean of 45.1°F is warmer than 20%.
In the Köppen classification computed from these normals, Hart Mountain Refuge is Dsb: continental, 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 Hart Mountain Refuge share this climate record?
Plush has no NOAA station with 1991-2020 normals of its 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.
- Plush, OR31 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 Hart Mountain Refuge's climate
What is the coldest month at Hart Mountain Refuge?
December, with a normal high of 39°F and a normal low of 20°F. The warmest is July (83°F by day, 47°F at night).
What is the rainiest month at Hart Mountain Refuge?
May, with 2.09 in of precipitation in a normal year; the driest is August with 0.44 in.
Nearby and next
- Oregon climateThe statewide normals and every place in the state
- Alkali Lake, OR34 miles from this station, 46.7°F a year
- Lakeview, OR42 miles from this station, 47.0°F a year
- Paisley, OR46 miles from this station, 47.8°F a year
- Denio (52 mi WSW), NV48 miles from this station, 42.9°F a year
- Compare two placesMonth by month, side by side
Download these normals (CSV) · JSON · How these figures are made