Enterprise (20 mi NNE), Oregon climate: Climate normals at a NOAA weather station
Enterprise (20 mi NNE)'s normal year runs from 18°F December nights to 88°F July afternoons, with 19.0 inches of precipitation a year. (NOAA 1991-2020 normals)
In metric: a yearly mean of 7.8°C, December lows of −8°C, July highs of 31°C, 482 mm of precipitation a year.
- NOAA stationEnterprise (20 mi NNE)
- Station IDUSC00352678
- Location45.71°N 117.15°W
- Elevation3,280 ft (1,000 m)
On October 23, the normal high in Enterprise (20 mi NNE) is 58°F and the normal low 29°F, and the chance of measurable rain or snow is 21%.
Normals describe a typical year at the station, not a forecast. The National Weather Service forecast for Enterprise (20 mi NNE).
- Jan 38° 18°
- Feb 45° 20°
- Mar 51° 26°
- Apr 59° 30°
- May 69° 36°
- Jun 77° 41°
- Jul 88° 45°
- Aug 89° 44°
- Sep 80° 36°
- Oct 63° 30°
- Nov 46° 24°
- Dec 36° 18°
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 Enterprise (20 mi NNE) each month?
July is the warmest month, with normal highs of 88°F; December the coldest, with normal lows of 18°F. The most precipitation falls in December (2.31 in), the least in August (0.74 in).
| Month | High | Low | Mean | Precip. | Wet days | 90°F days | Freezing nights | Daylight |
|---|---|---|---|---|---|---|---|---|
| January | 38°F | 18°F | 27.7°F | 1.57 | 8 | <1 | 30 | 9 h |
| February | 45°F | 20°F | 32.6°F | 1.54 | 7 | <1 | 26 | 10 h 20 min |
| March | 51°F | 26°F | 38.5°F | 1.49 | 8 | <1 | 28 | 11 h 50 min |
| April | 59°F | 30°F | 44.2°F | 1.91 | 9 | <1 | 19 | 13 h 30 min |
| May | 69°F | 36°F | 52.5°F | 2.08 | 9 | 1 | 10 | 14 h 50 min |
| June | 77°F | 41°F | 59.1°F | 1.92 | 8 | 4 | 3 | 15 h 40 min |
| July | 88°F | 45°F | 66.6°F | 0.85 | 4 | 14 | 1 | 15 h 20 min |
| August | 89°F | 44°F | 66.2°F | 0.74 | 3 | 15 | 1 | 14 h 10 min |
| September | 80°F | 36°F | 57.8°F | 0.94 | 3 | 6 | 9 | 12 h 40 min |
| October | 63°F | 30°F | 46.3°F | 1.34 | 5 | 1 | 21 | 11 h |
| November | 46°F | 24°F | 34.9°F | 2.27 | 10 | <1 | 26 | 9 h 30 min |
| December | 36°F | 18°F | 27.1°F | 2.31 | 9 | <1 | 30 | 8 h 40 min |
| Year (annual) | 62°F | 31°F | 46.1°F | 18.96 | 83 | 40 | 204 |
The same normals in °C and millimetres
| Month | High | Low | Mean | Precip. |
|---|---|---|---|---|
| January | 3°C | −8°C | −2.4°C | 40 mm |
| February | 7°C | −6°C | 0.3°C | 39 mm |
| March | 11°C | −4°C | 3.6°C | 38 mm |
| April | 15°C | −1°C | 6.8°C | 49 mm |
| May | 21°C | 2°C | 11.4°C | 53 mm |
| June | 25°C | 5°C | 15.1°C | 49 mm |
| July | 31°C | 7°C | 19.2°C | 22 mm |
| August | 32°C | 7°C | 19.0°C | 19 mm |
| September | 26°C | 2°C | 14.3°C | 24 mm |
| October | 17°C | −1°C | 7.9°C | 34 mm |
| November | 8°C | −4°C | 1.6°C | 58 mm |
| December | 2°C | −8°C | −2.7°C | 59 mm |
NOAA publishes no 1991-2020 snowfall normal for this station. The nearest record that keeps one, Wallowa (21 miles away), gets 48 inches of snow in a normal year; elevation and distance can change that.
Source: NOAA NCEI 1991-2020 monthly normals, station USC00352678; 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 Enterprise (20 mi NNE)?
Normal highs sit between 65°F and 85°F in May, June and September. Of those, September has the fewest days with rain (3).
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 USC00352678.
When is the last frost at Enterprise (20 mi NNE)?
In Enterprise (20 mi NNE), the last spring frost (32°F) comes after June 8 in half of years and after July 8 in one year in ten; the first autumn frost comes before September 5 in half of years and before August 16 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 81 year in 10 after July 8; 9 in 10 after May 18
- First autumn frost, half of years before
- September 51 year in 10 before August 16; 9 in 10 before September 22
NOAA puts the median frost-free season at 84 days, and the season without a hard freeze (28°F) at 126 days.
A hard freeze (28°F) comes after May 13 in half of springs and before September 22 in half of autumns.
The USDA's 2023 Plant Hardiness Zone Map puts Enterprise (20 mi NNE) in zone 7a in ZIP code 97828, 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 USC00352678; 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 Enterprise (20 mi NNE)?
In a normal year in Enterprise (20 mi NNE), 40 days a year reach 90°F (6 of them 100°F or more), 204 nights fall to 32°F or colder and 83 days bring measurable precipitation.
- Days at 90°F or more
- 40a normal year
- Days at 100°F or more
- 6a normal year
- Nights at 32°F or colder
- 204a normal year
- Days that stay below freezing
- 15high of 32°F or less
- Days with 0.01 inch of precipitation
- 83a normal year
Source: NOAA NCEI 1991-2020 annual normals, station USC00352678.
How sunny is it at Enterprise (20 mi NNE)?
Over a year 75% of the sunlight that would reach the ground under clear skies gets through the clouds at Enterprise (20 mi NNE), 4.1 kWh per square metre a day. July is the sunniest month (90%) and December the cloudiest (56%).
| Month | Share of clear-sky sunshine | Sunshine, kWh/m² a day |
|---|---|---|
| January | 62% | 1.5 |
| February | 65% | 2.4 |
| March | 64% | 3.4 |
| April | 67% | 4.7 |
| May | 71% | 5.9 |
| June | 77% | 6.8 |
| July | 90% | 7.6 |
| August | 89% | 6.4 |
| September | 83% | 4.7 |
| October | 73% | 2.9 |
| November | 62% | 1.6 |
| December | 56% | 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 many heating and cooling degree days does Enterprise (20 mi NNE) record?
A normal year at Enterprise (20 mi NNE) brings 7,116 heating degree days, 32% more than the median U.S. place (5,373), and 248 cooling degree days, 73% 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 1,750 growing degree days a year above 50°F.
| Month | Heating | Cooling |
|---|---|---|
| January | 1,156 | 0 |
| February | 907 | 0 |
| March | 823 | 0 |
| April | 624 | 0 |
| May | 394 | 5 |
| June | 200 | 23 |
| July | 61 | 109 |
| August | 58 | 95 |
| September | 234 | 17 |
| October | 581 | 0 |
| November | 902 | 0 |
| December | 1,176 | 0 |
| Year (annual) | 7,116 | 248 |
Source: NOAA NCEI 1991-2020 monthly normals, station USC00352678. 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 Enterprise (20 mi NNE)'s climate compare?
Enterprise (20 mi NNE) is warmer than 9 of the 105 places with their own NOAA record in Oregon, and wetter than 39. Across the 7,247 U.S. stations with normals, its annual mean of 46.1°F is warmer than 24%.
In the Köppen classification computed from these normals, Enterprise (20 mi NNE) 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 Enterprise (20 mi NNE)'s climate
What is the coldest month at Enterprise (20 mi NNE)?
December, with a normal high of 36°F and a normal low of 18°F. The warmest is July (88°F by day, 45°F at night).
Does it snow at Enterprise (20 mi NNE)?
Yes. NOAA publishes no 1991-2020 snowfall normal for the station; the nearest record that keeps one, Wallowa (21 miles away), records 48 inches of snow in a normal year.
What is the rainiest month at Enterprise (20 mi NNE)?
December, with 2.31 in of precipitation in a normal year; the driest is August with 0.74 in.
What plant hardiness zone is Enterprise (20 mi NNE) in?
The USDA's 2023 map puts Enterprise (20 mi NNE) in zone 7a in ZIP code 97828, the nearest ZIP area.
How late can frost come at Enterprise (20 mi NNE)?
In half of years the last 32°F night comes after June 8; in one year in ten it comes after July 8. Waiting until July 8 leaves about a one-in-ten chance of a later frost.
Nearby and next
- Oregon climateThe statewide normals and every place in the state
- Wallowa, OR21 miles from this station, 46.8°F a year
- Joseph, OR25 miles from this station, 44.2°F a year
- Elgin, OR39 miles from this station, 48.1°F a year
- Cottonwood, ID43 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