Squaw Butte-Northern Great Bas, Oregon climate: Climate normals at a NOAA weather station
Squaw Butte-Northern Great Bas's normal year runs from 20°F December nights to 84°F July afternoons, with 11.9 inches of precipitation a year. (NOAA 1991-2020 normals)
In metric: a yearly mean of 7.6°C, December lows of −7°C, July highs of 29°C, 302 mm of precipitation a year.
- NOAA stationSquaw Butte-Northern Great Bas
- Station IDUSC00358029
- Location43.49°N 119.72°W
- Elevation4,660 ft (1,420 m)
On October 23, the normal high in Squaw Butte-Northern Great Bas is 56°F and the normal low 33°F.
Normals describe a typical year at the station, not a forecast. The National Weather Service forecast for Squaw Butte-Northern Great Bas.
- Jan 36° 21°
- Feb 39° 23°
- Mar 47° 27°
- Apr 53° 31°
- May 63° 38°
- Jun 71° 43°
- Jul 84° 53°
- Aug 82° 52°
- Sep 74° 45°
- Oct 60° 35°
- Nov 44° 26°
- Dec 33° 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 Squaw Butte-Northern Great Bas each month?
July is the warmest month, with normal highs of 84°F; December the coldest, with normal lows of 20°F. The most precipitation falls in January (1.63 in), the least in August (0.37 in).
| Month | High | Low | Mean | Precip. | Wet days | 90°F days | Freezing nights | Daylight |
|---|---|---|---|---|---|---|---|---|
| January | 36°F | 21°F | 28.0°F | 1.63 | – | <1 | 30 | 9 h 20 min |
| February | 39°F | 23°F | 30.9°F | 1.00 | – | <1 | 25 | 10 h 30 min |
| March | 47°F | 27°F | 37.2°F | 1.18 | – | <1 | 25 | 11 h 50 min |
| April | 53°F | 31°F | 41.7°F | 0.96 | – | <1 | 20 | 13 h 20 min |
| May | 63°F | 38°F | 50.2°F | 1.54 | – | <1 | 9 | 14 h 40 min |
| June | 71°F | 43°F | 56.7°F | 0.87 | – | 1 | 3 | 15 h 20 min |
| July | 84°F | 53°F | 68.2°F | 0.44 | – | 11 | <1 | 15 h 10 min |
| August | 82°F | 52°F | 67.0°F | 0.37 | – | 9 | <1 | 14 h |
| September | 74°F | 45°F | 59.5°F | 0.51 | – | 1 | 2 | 12 h 30 min |
| October | 60°F | 35°F | 47.3°F | 0.92 | – | <1 | 12 | 11 h 10 min |
| November | 44°F | 26°F | 34.6°F | 1.11 | – | <1 | 24 | 9 h 40 min |
| December | 33°F | 20°F | 26.7°F | 1.37 | – | <1 | 30 | 9 h |
| Year (annual) | 57°F | 34°F | 45.7°F | 11.90 | – | 22 | 180 |
The same normals in °C and millimetres
| Month | High | Low | Mean | Precip. |
|---|---|---|---|---|
| January | 2°C | −6°C | −2.2°C | 41 mm |
| February | 4°C | −5°C | −0.6°C | 25 mm |
| March | 8°C | −3°C | 2.9°C | 30 mm |
| April | 12°C | −1°C | 5.4°C | 24 mm |
| May | 17°C | 3°C | 10.1°C | 39 mm |
| June | 21°C | 6°C | 13.7°C | 22 mm |
| July | 29°C | 11°C | 20.1°C | 11 mm |
| August | 28°C | 11°C | 19.4°C | 9 mm |
| September | 23°C | 7°C | 15.3°C | 13 mm |
| October | 15°C | 2°C | 8.5°C | 23 mm |
| November | 6°C | −4°C | 1.4°C | 28 mm |
| December | 1°C | −7°C | −2.9°C | 35 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 USC00358029; 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 Squaw Butte-Northern Great Bas?
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 USC00358029.
When is the last frost at Squaw Butte-Northern Great Bas?
In Squaw Butte-Northern Great Bas, the last spring frost (32°F) comes after June 11 in half of years and after June 28 in one year in ten; the first autumn frost comes before September 28 in half of years and before September 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
- June 111 year in 10 after June 28; 9 in 10 after May 18
- First autumn frost, half of years before
- September 281 year in 10 before September 3; 9 in 10 before October 13
NOAA puts the median frost-free season at 107 days, and the season without a hard freeze (28°F) at 139 days.
A hard freeze (28°F) comes after May 24 in half of springs and before October 13 in half of autumns.
The USDA's 2023 Plant Hardiness Zone Map puts Squaw Butte-Northern Great Bas in zone 6a in ZIP code 97758, 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 USC00358029; 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 at Squaw Butte-Northern Great Bas?
In a normal year in Squaw Butte-Northern Great Bas, 22 days a year reach 90°F (1 of them 100°F or more) and 180 nights fall to 32°F or colder.
- Days at 90°F or more
- 22a normal year
- Days at 100°F or more
- 1a normal year
- Nights at 32°F or colder
- 180a normal year
- Days that stay below freezing
- 26high of 32°F or less
Source: NOAA NCEI 1991-2020 annual normals, station USC00358029.
How sunny is it at Squaw Butte-Northern Great Bas?
Over a year 80% of the sunlight that would reach the ground under clear skies gets through the clouds at Squaw Butte-Northern Great Bas, 4.5 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 | 64% | 1.7 |
| February | 69% | 2.7 |
| March | 70% | 3.9 |
| April | 75% | 5.4 |
| May | 77% | 6.5 |
| June | 84% | 7.5 |
| July | 92% | 7.8 |
| August | 91% | 6.8 |
| September | 88% | 5.2 |
| October | 80% | 3.5 |
| November | 69% | 2.0 |
| December | 61% | 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 Squaw Butte-Northern Great Bas record?
A normal year at Squaw Butte-Northern Great Bas brings 7,355 heating degree days, 37% more than the median U.S. place (5,373), and 333 cooling degree days, 63% 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 1,836 growing degree days a year above 50°F.
| Month | Heating | Cooling |
|---|---|---|
| January | 1,147 | 0 |
| February | 956 | 0 |
| March | 862 | 0 |
| April | 697 | 0 |
| May | 461 | 3 |
| June | 270 | 20 |
| July | 53 | 150 |
| August | 59 | 121 |
| September | 203 | 38 |
| October | 549 | 2 |
| November | 912 | 0 |
| December | 1,187 | 0 |
| Year (annual) | 7,355 | 333 |
Source: NOAA NCEI 1991-2020 monthly normals, station USC00358029. 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 Squaw Butte-Northern Great Bas been warmer than normal?
2023 averaged 45.6°F, 0.1°F below the 1991-2020 normal of 45.7°F. 1 of the 2 complete years since 2022 ran warmer than the normal.
| Year | Mean | Against normal | Precip. |
|---|---|---|---|
| 2022 | 46.5°F | +0.8°F | 5.26 |
| 2023 | 45.6°F | −0.1°F | 6.55 |
Source: observed years: ACIS, station USC00358029. A year counts only with all twelve months complete.
How does Squaw Butte-Northern Great Bas's climate compare?
Squaw Butte-Northern Great Bas is warmer than 8 of the 105 places with their own NOAA record in Oregon, and wetter than 15. Across the 7,247 U.S. stations with normals, its annual mean of 45.7°F is warmer than 22%.
In the Köppen classification computed from these normals, Squaw Butte-Northern Great Bas 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.
Questions about Squaw Butte-Northern Great Bas's climate
What is the coldest month at Squaw Butte-Northern Great Bas?
December, with a normal high of 33°F and a normal low of 20°F. The warmest is July (84°F by day, 53°F at night).
What is the rainiest month at Squaw Butte-Northern Great Bas?
January, with 1.63 in of precipitation in a normal year; the driest is August with 0.37 in.
What plant hardiness zone is Squaw Butte-Northern Great Bas in?
The USDA's 2023 map puts Squaw Butte-Northern Great Bas in zone 6a in ZIP code 97758, the nearest ZIP area.
How late can frost come at Squaw Butte-Northern Great Bas?
In half of years the last 32°F night comes after June 11; in one year in ten it comes after June 28. Waiting until June 28 leaves about a one-in-ten chance of a later frost.
Nearby and next
- Oregon climateThe statewide normals and every place in the state
- Riley (10 mi WSW), OR2 miles from this station, 44.9°F a year
- O O Ranch, OR25 miles from this station, 45.5°F a year
- Alkali Lake, OR39 miles from this station, 46.7°F a year
- Burns, OR39 miles from this station, 46.0°F a year
- Compare two placesMonth by month, side by side
Download these normals (CSV) · JSON · How these figures are made