Sagemoor, Washington climate: Climate normals at a NOAA weather station
Sagemoor's normal year runs from 25°F January nights to 90°F July afternoons, with 9.8 inches of precipitation a year. (NOAA 1991-2020 normals)
In metric: a yearly mean of 11.1°C, January lows of −4°C, July highs of 32°C, 248 mm of precipitation a year.
- NOAA stationSagemoor
- Station IDUSC00457247
- Location46.40°N 119.07°W
- Elevation595 ft (181 m)
On October 23, the normal high in Sagemoor is 62°F and the normal low 34°F.
Normals describe a typical year at the station, not a forecast. The National Weather Service forecast for Sagemoor.
- Jan 41° 25°
- Feb 48° 27°
- Mar 58° 32°
- Apr 66° 36°
- May 75° 44°
- Jun 82° 50°
- Jul 90° 55°
- Aug 89° 54°
- Sep 80° 47°
- Oct 66° 37°
- Nov 50° 29°
- Dec 40° 27°
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 Sagemoor each month?
July is the warmest month, with normal highs of 90°F; January the coldest, with normal lows of 25°F. The most precipitation falls in December (1.38 in), the least in July (0.23 in).
| Month | High | Low | Mean | Precip. | Wet days | 90°F days | Freezing nights | Daylight |
|---|---|---|---|---|---|---|---|---|
| January | 41°F | 25°F | 33.1°F | 1.25 | – | <1 | 24 | 9 h |
| February | 48°F | 27°F | 37.5°F | 0.87 | – | <1 | 23 | 10 h 20 min |
| March | 58°F | 32°F | 44.7°F | 1.04 | – | <1 | 18 | 11 h 50 min |
| April | 66°F | 36°F | 51.0°F | 0.78 | – | <1 | 8 | 13 h 30 min |
| May | 75°F | 44°F | 59.4°F | 0.83 | – | 2 | 1 | 15 h |
| June | 82°F | 50°F | 65.8°F | 0.76 | – | 5 | <1 | 15 h 50 min |
| July | 90°F | 55°F | 72.5°F | 0.23 | – | 18 | <1 | 15 h 30 min |
| August | 89°F | 54°F | 71.6°F | 0.27 | – | 16 | <1 | 14 h 10 min |
| September | 80°F | 47°F | 63.5°F | 0.34 | – | 3 | <1 | 12 h 40 min |
| October | 66°F | 37°F | 51.5°F | 0.92 | – | <1 | 8 | 11 h |
| November | 50°F | 29°F | 39.2°F | 1.08 | – | <1 | 20 | 9 h 30 min |
| December | 40°F | 27°F | 33.9°F | 1.38 | – | <1 | 25 | 8 h 40 min |
| Year (annual) | 65°F | 39°F | 52.0°F | 9.75 | – | 43 | 127 |
The same normals in °C and millimetres
| Month | High | Low | Mean | Precip. |
|---|---|---|---|---|
| January | 5°C | −4°C | 0.6°C | 32 mm |
| February | 9°C | −3°C | 3.1°C | 22 mm |
| March | 14°C | 0°C | 7.1°C | 26 mm |
| April | 19°C | 2°C | 10.6°C | 20 mm |
| May | 24°C | 7°C | 15.2°C | 21 mm |
| June | 28°C | 10°C | 18.8°C | 19 mm |
| July | 32°C | 13°C | 22.5°C | 6 mm |
| August | 32°C | 12°C | 22.0°C | 7 mm |
| September | 27°C | 8°C | 17.5°C | 9 mm |
| October | 19°C | 3°C | 10.8°C | 23 mm |
| November | 10°C | −2°C | 4.0°C | 27 mm |
| December | 5°C | −3°C | 1.1°C | 35 mm |
NOAA publishes no 1991-2020 snowfall normal for this station. The nearest record that keeps one, Ice Harbor Dam (14 miles away), gets 2 inches of snow in a normal year; elevation and distance can change that.
Source: NOAA NCEI 1991-2020 monthly normals, station USC00457247; 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 Sagemoor?
Normal highs sit between 65°F and 85°F in April, May, June, 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 USC00457247.
When is the last frost at Sagemoor?
In Sagemoor, the last spring frost (32°F) comes after April 30 in half of years and after May 16 in one year in ten; the first autumn frost comes before October 13 in half of years and before September 29 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
- April 301 year in 10 after May 16; 9 in 10 after April 15
- First autumn frost, half of years before
- October 131 year in 10 before September 29; 9 in 10 before October 27
NOAA puts the median frost-free season at 166 days, and the season without a hard freeze (28°F) at 193 days.
A hard freeze (28°F) comes after April 13 in half of springs and before October 23 in half of autumns.
The USDA's 2023 Plant Hardiness Zone Map puts Sagemoor in zone 7a in ZIP code 99330, the nearest ZIP area.
Frost dates for every NOAA station in Washington · Frost dates by ZIP code
Source: NOAA NCEI 1991-2020 annual normals (frost probabilities), station USC00457247; 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 Sagemoor?
In a normal year in Sagemoor, 43 days a year reach 90°F (5 of them 100°F or more) and 127 nights fall to 32°F or colder.
- Days at 90°F or more
- 43a normal year
- Days at 100°F or more
- 5a normal year
- Nights at 32°F or colder
- 127a normal year
- Days that stay below freezing
- 20high of 32°F or less
Source: NOAA NCEI 1991-2020 annual normals, station USC00457247.
How sunny is it at Sagemoor?
Over a year 81% of the sunlight that would reach the ground under clear skies gets through the clouds at Sagemoor, 4.2 kWh per square metre a day. July is the sunniest month (94%) and December the cloudiest (55%).
| Month | Share of clear-sky sunshine | Sunshine, kWh/m² a day |
|---|---|---|
| January | 56% | 1.2 |
| February | 69% | 2.3 |
| March | 72% | 3.6 |
| April | 79% | 5.4 |
| May | 81% | 6.5 |
| June | 85% | 7.2 |
| July | 94% | 7.7 |
| August | 92% | 6.4 |
| September | 87% | 4.7 |
| October | 79% | 3.0 |
| November | 65% | 1.6 |
| December | 55% | 1.0 |
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 Sagemoor record?
A normal year at Sagemoor brings 5,351 heating degree days, 0% fewer than the median U.S. place (5,373), and 621 cooling degree days, 32% fewer than the median (908). Seven months need 300 or more heating degree days, a monthly mean of about 55°F or colder. For gardens and crops, NOAA counts 2,773 growing degree days a year above 50°F.
| Month | Heating | Cooling |
|---|---|---|
| January | 990 | 0 |
| February | 771 | 0 |
| March | 630 | 0 |
| April | 423 | 1 |
| May | 200 | 26 |
| June | 67 | 91 |
| July | 9 | 241 |
| August | 6 | 210 |
| September | 98 | 51 |
| October | 420 | 1 |
| November | 775 | 0 |
| December | 964 | 0 |
| Year (annual) | 5,351 | 621 |
Source: NOAA NCEI 1991-2020 monthly normals, station USC00457247. 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 Sagemoor been warmer than normal?
2022 averaged 51.6°F, 0.4°F below the 1991-2020 normal of 52.0°F.
| Year | Mean | Against normal | Precip. |
|---|---|---|---|
| 2022 | 51.6°F | −0.4°F | 9.87 |
Source: observed years: ACIS, station USC00457247. A year counts only with all twelve months complete.
How does Sagemoor's climate compare?
Sagemoor is warmer than 80 of the 96 places with their own NOAA record in Washington, and wetter than 14. Across the 7,247 U.S. stations with normals, its annual mean of 52.0°F is warmer than 49%.
In the Köppen classification computed from these normals, Sagemoor is BSk: cold semi-arid steppe. 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 Sagemoor's climate
What is the coldest month at Sagemoor?
January, with a normal high of 41°F and a normal low of 25°F. The warmest is July (90°F by day, 55°F at night).
Does it snow at Sagemoor?
Yes. NOAA publishes no 1991-2020 snowfall normal for the station; the nearest record that keeps one, Ice Harbor Dam (14 miles away), records 2 inches of snow in a normal year.
What is the rainiest month at Sagemoor?
December, with 1.38 in of precipitation in a normal year; the driest is July with 0.23 in.
What plant hardiness zone is Sagemoor in?
The USDA's 2023 map puts Sagemoor in zone 7a in ZIP code 99330, the nearest ZIP area.
How late can frost come at Sagemoor?
In half of years the last 32°F night comes after April 30; in one year in ten it comes after May 16. Waiting until May 16 leaves about a one-in-ten chance of a later frost.
Nearby and next
- Washington climateThe statewide normals and every place in the state
- Eltopia (8 mi WSW), WA4 miles from this station, 51.9°F a year
- Pasco, WA9 miles from this station, 53.3°F a year
- Richland, WA11 miles from this station, 53.6°F a year
- Kennewick, WA13 miles from this station, 55.0°F a year
- Compare two placesMonth by month, side by side
Download these normals (CSV) · JSON · How these figures are made