Odessa, Washington climate: Normal weather by month, frost dates and records
Odessa's normal year runs from 22°F December nights to 88°F July afternoons, with 11.1 inches of precipitation and 14 inches of snow a year. (NOAA 1991-2020 normals)
In metric: a yearly mean of 9.3°C, December lows of −6°C, July highs of 31°C, 281 mm of precipitation a year.
- NOAA stationOdessa
- Station IDUSC00456039
- Location47.33°N 118.70°W
- Elevation1,543 ft (470 m)
- Population924
On October 23, the normal high in Odessa is 58°F and the normal low 32°F, and the chance of measurable rain or snow is 22%.
Normals describe a typical year at the station, not a forecast. The National Weather Service forecast for Odessa.
- Jan 36° 23°
- Feb 43° 25°
- Mar 53° 30°
- Apr 62° 34°
- May 71° 41°
- Jun 78° 47°
- Jul 88° 52°
- Aug 87° 51°
- Sep 78° 43°
- Oct 62° 34°
- Nov 46° 28°
- Dec 36° 22°
Each month: normal high (large) and low, °F. Fill: the month's normal mean, colder blue to hotter red.
What is the weather like in Odessa each month?
July is the warmest month, with normal highs of 88°F; December the coldest, with normal lows of 22°F. The most precipitation falls in December (1.66 in), the least in August (0.24 in).
| Month | High | Low | Mean | Precip. | Snow | Wet days | 90°F days | Freezing nights | Daylight |
|---|---|---|---|---|---|---|---|---|---|
| January | 36°F | 23°F | 29.7°F | 1.51 | 4.9 | 9 | <1 | 26 | 8 h 50 min |
| February | 43°F | 25°F | 34.1°F | 1.01 | 1.5 | 7 | <1 | 21 | 10 h 10 min |
| March | 53°F | 30°F | 41.3°F | 1.07 | 0.8 | 8 | <1 | 18 | 11 h 50 min |
| April | 62°F | 34°F | 47.9°F | 0.83 | 0.0 | 6 | <1 | 11 | 13 h 30 min |
| May | 71°F | 41°F | 56.3°F | 1.01 | 0.0 | 6 | 1 | 3 | 15 h |
| June | 78°F | 47°F | 62.5°F | 0.77 | 0.0 | 5 | 3 | <1 | 15 h 50 min |
| July | 88°F | 52°F | 69.9°F | 0.37 | 0.0 | 2 | 14 | <1 | 15 h 40 min |
| August | 87°F | 51°F | 69.2°F | 0.24 | 0.0 | 2 | 13 | <1 | 14 h 20 min |
| September | 78°F | 43°F | 60.6°F | 0.34 | 0.0 | 3 | 3 | 1 | 12 h 40 min |
| October | 62°F | 34°F | 48.1°F | 0.90 | 0.0 | 6 | <1 | 11 | 11 h |
| November | 46°F | 28°F | 36.7°F | 1.37 | 2.0 | 9 | <1 | 19 | 9 h 20 min |
| December | 36°F | 22°F | 28.8°F | 1.66 | 4.7 | 9 | <1 | 27 | 8 h 30 min |
| Year (annual) | 62°F | 36°F | 48.8°F | 11.08 | 13.9 | 73 | 34 | 139 |
The same normals in °C and millimetres
| Month | High | Low | Mean | Precip. | Snow |
|---|---|---|---|---|---|
| January | 2°C | −5°C | −1.3°C | 38 mm | 12 cm |
| February | 6°C | −4°C | 1.2°C | 26 mm | 4 cm |
| March | 12°C | −1°C | 5.2°C | 27 mm | 2 cm |
| April | 17°C | 1°C | 8.8°C | 21 mm | 0 cm |
| May | 22°C | 5°C | 13.5°C | 26 mm | 0 cm |
| June | 26°C | 8°C | 16.9°C | 20 mm | 0 cm |
| July | 31°C | 11°C | 21.1°C | 9 mm | 0 cm |
| August | 31°C | 11°C | 20.7°C | 6 mm | 0 cm |
| September | 25°C | 6°C | 15.9°C | 9 mm | 0 cm |
| October | 17°C | 1°C | 8.9°C | 23 mm | 0 cm |
| November | 8°C | −2°C | 2.6°C | 35 mm | 5 cm |
| December | 2°C | −6°C | −1.8°C | 42 mm | 12 cm |
Source: NOAA NCEI 1991-2020 monthly normals, station USC00456039; 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.
When is the best weather to visit Odessa?
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 USC00456039.
When is the last frost in Odessa?
In Odessa, the last spring frost (32°F) comes after May 14 in half of years and after May 31 in one year in ten; the first autumn frost comes before September 26 in half of years and before September 10 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
- May 141 year in 10 after May 31; 9 in 10 after April 29
- First autumn frost, half of years before
- September 261 year in 10 before September 10; 9 in 10 before October 9
NOAA puts the median frost-free season at 135 days, and the season without a hard freeze (28°F) at 161 days.
A hard freeze (28°F) comes after May 1 in half of springs and before October 7 in half of autumns.
The USDA's 2023 Plant Hardiness Zone Map puts Odessa in zone 6b in ZIP code 99159, the nearest ZIP area. By the map's own method, the average of each year's coldest night over 1991-2020, Odessa's NOAA station is in zone 6b: the coldest night of a typical year reaches −4°F (26 complete years).
Frost dates for every NOAA station in Washington · Frost dates by ZIP code
Source: NOAA NCEI 1991-2020 annual normals (frost probabilities), station USC00456039; USDA 2023 Plant Hardiness Zone Map, ZIP listings: PRISM Group, Oregon State University, https://prism.oregonstate.edu, accessed October 8, 2026; the station zone: ACIS daily lows, 1991-2020. 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 in Odessa?
In a normal year in Odessa, 34 days a year reach 90°F (4 of them 100°F or more), 139 nights fall to 32°F or colder and 73 days bring measurable precipitation.
- Days at 90°F or more
- 34a normal year
- Days at 100°F or more
- 4a normal year
- Nights at 32°F or colder
- 139a normal year
- Days that stay below freezing
- 24high of 32°F or less
- Days with 0.01 inch of precipitation
- 73a normal year
- Days with 1 inch of snow or more
- 6a normal year
The highest temperature in this station's record (since 1902) is 115°F, on June 30, 2021; the lowest is −33°F, on January 30, 1929.
The wettest calendar year on that record is 1940, with 18.19 in; the snowiest season is 1949–50, with 43.6 inches.
Source: NOAA NCEI 1991-2020 annual normals, station USC00456039; records: ACIS (NOAA Regional Climate Centers), station USC00456039. Records use complete months only; a month missing more than three days is left out.
How sunny is Odessa?
Over a year 80% of the sunlight that would reach the ground under clear skies gets through the clouds in the area around Odessa, 4.1 kWh per square metre a day. July is the sunniest month (92%) and December the cloudiest (53%).
| Month | Share of clear-sky sunshine | Sunshine, kWh/m² a day |
|---|---|---|
| January | 55% | 1.1 |
| February | 69% | 2.3 |
| March | 71% | 3.5 |
| April | 78% | 5.2 |
| May | 80% | 6.4 |
| June | 81% | 7.0 |
| July | 92% | 7.5 |
| August | 91% | 6.3 |
| September | 86% | 4.6 |
| October | 78% | 2.9 |
| November | 64% | 1.5 |
| December | 53% | 0.9 |
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 much heating and cooling does Odessa need?
A normal year in Odessa brings 6,333 heating degree days, 18% more than the median U.S. place (5,373), and 433 cooling degree days, 52% 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 2,250 growing degree days a year above 50°F.
| Month | Heating | Cooling |
|---|---|---|
| January | 1,094 | 0 |
| February | 865 | 0 |
| March | 735 | 0 |
| April | 515 | 0 |
| May | 283 | 12 |
| June | 124 | 49 |
| July | 26 | 176 |
| August | 29 | 159 |
| September | 168 | 36 |
| October | 524 | 1 |
| November | 849 | 0 |
| December | 1,121 | 0 |
| Year (annual) | 6,333 | 433 |
Source: NOAA NCEI 1991-2020 monthly normals, station USC00456039. 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.
Has Odessa been warmer than normal lately?
Over 89 complete years from 1913 to 2022, the station's annual mean temperature rose at a fitted 0.9°F per century (+0.05°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 Odessa's climate compare?
Odessa is warmer than 22 of the other 95 places with their own NOAA record in Washington, and wetter than 18. Across the 7,247 U.S. stations with normals, its annual mean of 48.8°F is warmer than 35%.
In the Köppen classification computed from these normals, Odessa 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.
Which places near Odessa share this climate record?
Krupp 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.
- Krupp, WA45 people · 15 mi W
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 Odessa's climate
What is the coldest month in Odessa?
December, with a normal high of 36°F and a normal low of 22°F. The warmest is July (88°F by day, 52°F at night).
Does it snow in Odessa?
Yes: 14 inches in a normal year, falling on 9 days with 0.1 inch or more, the most in January (4.9 inches).
What is the rainiest month in Odessa?
December, with 1.66 in of precipitation in a normal year; the driest is August with 0.24 in.
What plant hardiness zone is Odessa in?
The USDA's 2023 map puts Odessa in zone 6b in ZIP code 99159, the nearest ZIP area. By the same method at Odessa's NOAA station, the coldest night of a typical year reaches −4°F (26 years, 1991-2020): zone 6b.
How late can frost come in Odessa?
In half of years the last 32°F night comes after May 14; in one year in ten it comes after May 31. Waiting until May 31 leaves about a one-in-ten chance of a later frost.
Nearby and next
- Washington climateThe statewide normals and every place in the state
- Ritzville, WA21 miles from this station, 48.7°F a year
- Harrington, WA23 miles from this station, 47.2°F a year
- Lind, WA24 miles from this station, 50.8°F a year
- Wilbur, WA30 miles from this station, 45.6°F a year
- Compare two placesMonth by month, side by side
Download these normals (CSV) · JSON · How these figures are made