Davenport, Washington climate: Normal weather by month, frost dates and records
Davenport's normal year runs from 19°F December nights to 82°F July afternoons, with 14.0 inches of precipitation and 30 inches of snow a year. (NOAA 1991-2020 normals)
In metric: a yearly mean of 6.9°C, December lows of −7°C, July highs of 28°C, 355 mm of precipitation a year.
- NOAA stationDavenport
- Station IDUSC00452007
- Location47.66°N 118.16°W
- Elevation2,369 ft (722 m)
- Population1,805
On October 23, the normal high in Davenport is 53°F and the normal low 29°F, and the chance of measurable rain or snow is 23%.
Normals describe a typical year at the station, not a forecast. The National Weather Service forecast for Davenport.
- Jan 32° 19°
- Feb 37° 21°
- Mar 47° 27°
- Apr 56° 31°
- May 65° 39°
- Jun 72° 43°
- Jul 82° 48°
- Aug 83° 48°
- Sep 73° 40°
- Oct 57° 31°
- Nov 42° 25°
- Dec 31° 19°
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 Davenport each month?
July is the warmest month, with normal highs of 82°F; December the coldest, with normal lows of 19°F. The most precipitation falls in December (1.90 in), the least in August (0.30 in).
| Month | High | Low | Mean | Precip. | Snow | Wet days | 90°F days | Freezing nights | Daylight |
|---|---|---|---|---|---|---|---|---|---|
| January | 32°F | 19°F | 25.5°F | 1.73 | 7.4 | 8 | <1 | 29 | 8 h 50 min |
| February | 37°F | 21°F | 29.1°F | 0.99 | 5.5 | 6 | <1 | 25 | 10 h 10 min |
| March | 47°F | 27°F | 36.8°F | 1.53 | 2.2 | 8 | <1 | 25 | 11 h 50 min |
| April | 56°F | 31°F | 43.6°F | 1.11 | 0.2 | 6 | <1 | 16 | 13 h 30 min |
| May | 65°F | 39°F | 52.0°F | 1.37 | 0.0 | 7 | <1 | 6 | 15 h 10 min |
| June | 72°F | 43°F | 57.7°F | 1.15 | 0.0 | 6 | 1 | 1 | 16 h |
| July | 82°F | 48°F | 65.1°F | 0.42 | 0.0 | 3 | 8 | <1 | 15 h 40 min |
| August | 83°F | 48°F | 65.1°F | 0.30 | 0.0 | 2 | 7 | <1 | 14 h 20 min |
| September | 73°F | 40°F | 56.5°F | 0.49 | 0.0 | 3 | 1 | 3 | 12 h 40 min |
| October | 57°F | 31°F | 44.0°F | 1.26 | 0.3 | 6 | <1 | 17 | 11 h |
| November | 42°F | 25°F | 33.2°F | 1.72 | 4.1 | 9 | <1 | 24 | 9 h 20 min |
| December | 31°F | 19°F | 25.2°F | 1.90 | 10.6 | 9 | <1 | 29 | 8 h 30 min |
| Year (annual) | 56°F | 33°F | 44.5°F | 13.97 | 30.3 | 74 | 18 | 175 |
The same normals in °C and millimetres
| Month | High | Low | Mean | Precip. | Snow |
|---|---|---|---|---|---|
| January | 0°C | −7°C | −3.6°C | 44 mm | 19 cm |
| February | 3°C | −6°C | −1.6°C | 25 mm | 14 cm |
| March | 8°C | −3°C | 2.7°C | 39 mm | 6 cm |
| April | 13°C | 0°C | 6.4°C | 28 mm | 1 cm |
| May | 19°C | 4°C | 11.1°C | 35 mm | 0 cm |
| June | 22°C | 6°C | 14.3°C | 29 mm | 0 cm |
| July | 28°C | 9°C | 18.4°C | 11 mm | 0 cm |
| August | 28°C | 9°C | 18.4°C | 8 mm | 0 cm |
| September | 23°C | 5°C | 13.6°C | 12 mm | 0 cm |
| October | 14°C | −1°C | 6.7°C | 32 mm | 1 cm |
| November | 5°C | −4°C | 0.7°C | 44 mm | 10 cm |
| December | 0°C | −7°C | −3.8°C | 48 mm | 27 cm |
Source: NOAA NCEI 1991-2020 monthly normals, station USC00452007; 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 Davenport?
Normal highs sit between 65°F and 85°F in May, June, July, August and September. Of those, August has the fewest days with rain (2).
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 USC00452007.
When is the last frost in Davenport?
In Davenport, the last spring frost (32°F) comes after June 6 in half of years and after July 5 in one year in ten; the first autumn frost comes before September 11 in half of years and before August 26 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 61 year in 10 after July 5; 9 in 10 after May 13
- First autumn frost, half of years before
- September 111 year in 10 before August 26; 9 in 10 before September 28
NOAA puts the median frost-free season at 94 days, and the season without a hard freeze (28°F) at 137 days.
A hard freeze (28°F) comes after May 11 in half of springs and before September 27 in half of autumns.
The USDA's 2023 Plant Hardiness Zone Map puts Davenport in zone 6b in ZIP code 99122, the nearest ZIP area. By the map's own method, the average of each year's coldest night over 1991-2020, Davenport's NOAA station is in zone 6a: the coldest night of a typical year reaches −9°F (21 complete years); the map interpolates between stations and terrain, so the station and the ZIP area can differ by half a zone.
Frost dates for every NOAA station in Washington · Frost dates by ZIP code
Source: NOAA NCEI 1991-2020 annual normals (frost probabilities), station USC00452007; 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 Davenport?
In a normal year in Davenport, 18 days a year reach 90°F (1 of them 100°F or more), 175 nights fall to 32°F or colder and 74 days bring measurable precipitation.
- Days at 90°F or more
- 18a normal year
- Days at 100°F or more
- 1a normal year
- Nights at 32°F or colder
- 175a normal year
- Days that stay below freezing
- 43high of 32°F or less
- Days with 0.01 inch of precipitation
- 74a normal year
- Days with 1 inch of snow or more
- 11a normal year
The highest temperature in this station's record (since 1893) is 107°F, on June 30, 2021; the lowest is −28°F, on January 31, 1996.
The wettest calendar year on that record is 1948, with 26.06 in; the snowiest season is 1949–50, with 74.9 inches.
Source: NOAA NCEI 1991-2020 annual normals, station USC00452007; records: ACIS (NOAA Regional Climate Centers), station USC00452007. Records use complete months only; a month missing more than three days is left out.
How sunny is Davenport?
Over a year 80% of the sunlight that would reach the ground under clear skies gets through the clouds in the area around Davenport, 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 Davenport need?
A normal year in Davenport brings 7,662 heating degree days, 43% more than the median U.S. place (5,373), and 207 cooling degree days, 77% 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 1,574 growing degree days a year above 50°F.
| Month | Heating | Cooling |
|---|---|---|
| January | 1,225 | 0 |
| February | 1,004 | 0 |
| March | 874 | 0 |
| April | 644 | 0 |
| May | 408 | 4 |
| June | 235 | 18 |
| July | 83 | 86 |
| August | 82 | 85 |
| September | 271 | 15 |
| October | 651 | 0 |
| November | 953 | 0 |
| December | 1,234 | 0 |
| Year (annual) | 7,662 | 207 |
Source: NOAA NCEI 1991-2020 monthly normals, station USC00452007. 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 Davenport been warmer than normal lately?
2025 averaged 47.2°F, 2.7°F above the 1991-2020 normal of 44.5°F. 4 of the 5 complete years since 2021 ran warmer than the normal.
| Year | Mean | Against normal | Precip. | Snow |
|---|---|---|---|---|
| 2021 | 46.1°F | +1.6°F | 8.86 | 23.6 |
| 2022 | 44.0°F | −0.5°F | 14.77 | 38.5 |
| 2023 | 45.9°F | +1.4°F | 12.69 | 28.0 |
| 2024 | 45.9°F | +1.4°F | 13.81 | 21.2 |
| 2025 | 47.2°F | +2.7°F | 14.15 | 14.3 |
Over 76 complete years from 1910 to 2025, the station's annual mean temperature rose at a fitted 2.5°F per century (+0.14°C per decade). A fitted rate summarizes the whole record; single years swing well above and below it.
Source: observed years: ACIS, station USC00452007; trend: NOAA GHCN-Monthly v4. A year counts only with all twelve months complete.
How does Davenport's climate compare?
Davenport is warmer than 1 of the other 95 places with their own NOAA record in Washington, and wetter than 26. Across the 7,247 U.S. stations with normals, its annual mean of 44.5°F is warmer than 17%.
In the Köppen classification computed from these normals, Davenport 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 Davenport share this climate record?
Reardan 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.
- Reardan, WA688 people · 13 mi E
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 Davenport's climate
What is the coldest month in Davenport?
December, with a normal high of 31°F and a normal low of 19°F. The warmest is July (82°F by day, 48°F at night).
Does it snow in Davenport?
Yes: 30 inches in a normal year, falling on 17 days with 0.1 inch or more, the most in December (10.6 inches).
What is the rainiest month in Davenport?
December, with 1.90 in of precipitation in a normal year; the driest is August with 0.30 in.
What plant hardiness zone is Davenport in?
The USDA's 2023 map puts Davenport in zone 6b in ZIP code 99122, the nearest ZIP area. By the same method at Davenport's NOAA station, the coldest night of a typical year reaches −9°F (21 years, 1991-2020): zone 6a.
How late can frost come in Davenport?
In half of years the last 32°F night comes after June 6; in one year in ten it comes after July 5. Waiting until July 5 leaves about a one-in-ten chance of a later frost.
Nearby and next
- Washington climateThe statewide normals and every place in the state
- Harrington, WA13 miles from this station, 47.2°F a year
- Wilbur, WA27 miles from this station, 45.6°F a year
- Spokane, WA30 miles from this station, 48.6°F a year
- Odessa, WA34 miles from this station, 48.8°F a year
- Compare two placesMonth by month, side by side
Download these normals (CSV) · JSON · How these figures are made