Climate Dayton - Washington
| JanJa | FebFe | MarMa | AprAp | MayMa | JunJu | |
|---|---|---|---|---|---|---|
| Average high in ºF Av. high Hi | 41 | 46 | 53 | 60 | 69 | 76 |
| Average low in ºF Av. low Lo | 27 | 29 | 34 | 38 | 45 | 50 |
| Av. precipitation in inch Av. precip. Pre. | 2.28 | 1.71 | 2.18 | 1.72 | 1.75 | 1.27 |
| Av. snowfall in inch Snowfall Sn | 6 | 3 | 1 | 0 | 0 | 0 |
| JulJu | AugAu | SepSe | OctOc | NovNo | DecDe | |
|---|---|---|---|---|---|---|
| Average high in ºF Av. high Hi | 86 | 86 | 76 | 63 | 48 | 39 |
| Average low in ºF Av. low Lo | 56 | 55 | 47 | 38 | 32 | 26 |
| Av. precipitation in inch Av. precip. Pre. | 0.47 | 0.50 | 0.79 | 1.51 | 2.70 | 2.19 |
| Av. snowfall in inch Snowfall Sn | 0 | 0 | 0 | 0 | 1 | 6 |
What is the average weather in Dayton, Washington?
Dayton experiences a warm-summer climate with dry summers and wetter winters, typical of its region. Winters are cold and bring regular snowfall, while summers are warm. Overall, the area receives low annual precipitation, with frequent rain or drizzle common during the cooler season.
Dayton Climate Graph - Washington Climate Chart
Daily normals Dayton - Washington - January
Day | High ºF | Low ºF | Prec/mo inch | Prec/yr inch | Snow/mo inch | Snow/yr inch |
|---|---|---|---|---|---|---|
| 1 Jan | 39.8 | 25.6 | 0.06 | 0.06 | 2.00 | 5.08 |
| 2 Jan | 39.9 | 25.6 | 0.12 | 0.12 | 4.00 | 10.16 |
| 3 Jan | 40.0 | 25.7 | 0.19 | 0.19 | 6.00 | 15.24 |
| 4 Jan | 40.1 | 25.7 | 0.25 | 0.25 | 7.00 | 17.78 |
| 5 Jan | 40.2 | 25.7 | 0.31 | 0.31 | 9.00 | 22.86 |
| 6 Jan | 40.3 | 25.8 | 0.38 | 0.38 | 12.00 | 30.48 |
| 7 Jan | 40.4 | 25.9 | 0.44 | 0.44 | 14.00 | 35.56 |
| 8 Jan | 40.5 | 25.9 | 0.51 | 0.51 | 16.00 | 40.64 |
| 9 Jan | 40.6 | 26.0 | 0.58 | 0.58 | 18.00 | 45.72 |
| 10 Jan | 40.7 | 26.0 | 0.65 | 0.65 | 20.00 | 50.80 |
| 11 Jan | 40.8 | 26.1 | 0.72 | 0.72 | 23.00 | 58.42 |
| 12 Jan | 41.0 | 26.2 | 0.79 | 0.79 | 25.00 | 63.50 |
| 13 Jan | 41.1 | 26.2 | 0.86 | 0.86 | 27.00 | 68.58 |
| 14 Jan | 41.2 | 26.3 | 0.93 | 0.93 | 30.00 | 76.20 |
| 15 Jan | 41.3 | 26.4 | 1.00 | 1.00 | 32.00 | 81.28 |
| 16 Jan | 41.5 | 26.4 | 1.06 | 1.06 | 34.00 | 86.36 |
| 17 Jan | 41.6 | 26.5 | 1.13 | 1.13 | 37.00 | 93.98 |
| 18 Jan | 41.7 | 26.5 | 1.20 | 1.20 | 39.00 | 99.06 |
| 19 Jan | 41.8 | 26.6 | 1.26 | 1.26 | 41.00 | 104.14 |
| 20 Jan | 42.0 | 26.7 | 1.33 | 1.33 | 43.00 | 109.22 |
| 21 Jan | 42.1 | 26.7 | 1.40 | 1.40 | 45.00 | 114.30 |
| 22 Jan | 42.2 | 26.8 | 1.47 | 1.47 | 47.00 | 119.38 |
| 23 Jan | 42.4 | 26.8 | 1.54 | 1.54 | 49.00 | 124.46 |
| 24 Jan | 42.5 | 26.9 | 1.61 | 1.61 | 51.00 | 129.54 |
| 25 Jan | 42.6 | 26.9 | 1.67 | 1.67 | 53.00 | 134.62 |
| 26 Jan | 42.7 | 27.0 | 1.74 | 1.74 | 55.00 | 139.70 |
| 27 Jan | 42.9 | 27.0 | 1.81 | 1.81 | 57.00 | 144.78 |
| 28 Jan | 43.0 | 27.1 | 1.88 | 1.88 | 58.00 | 147.32 |
| 29 Jan | 43.1 | 27.1 | 1.95 | 1.95 | 60.00 | 152.40 |
| 30 Jan | 43.3 | 27.2 | 2.01 | 2.01 | 61.00 | 154.94 |
| 31 Jan | 43.4 | 27.2 | 2.08 | 2.08 | 63.00 | 160.02 |
Weather history Dayton - May 2026
| Day | High ºF | Low ºF | Precip. inch | Snow inch | Snow d. inch |
|---|---|---|---|---|---|
| 01 May | 73.9 | 68.0 | 0.00 | 0.00 | 0.0 |
| 02 May | 78.1 | 50.0 | 0.00 | 0.00 | 0.0 |
| 03 May | 82.9 | 66.9 | 0.00 | 0.00 | 0.0 |
| 04 May | 82.0 | 51.1 | 0.00 | 0.00 | 0.0 |
| 05 May | 82.0 | 50.0 | 0.00 | 0.00 | 0.0 |
| 06 May | 78.1 | 46.9 | 0.00 | 0.00 | 0.0 |
| 07 May | 77.0 | 52.0 | 0.00 | 0.00 | 0.0 |
| 08 May | 73.0 | 41.0 | 0.00 | 0.00 | 0.0 |
| 09 May | 71.1 | 46.0 | 0.00 | 0.00 | 0.0 |
| 10 May | 73.9 | 46.0 | 0.00 | 0.00 | 0.0 |
| 11 May | 71.1 | 43.0 | 0.00 | 0.00 | 0.0 |
| 12 May | 73.9 | 43.0 | 0.00 | 0.00 | 0.0 |
| 13 May | 82.0 | 43.0 | 0.01 | 0.00 | 0.0 |
| 14 May | 60.1 | 46.0 | 0.09 | 0.00 | 0.0 |
| 15 May | 63.0 | 45.0 | 0.00 | 0.00 | 0.0 |
| 16 May | 57.9 | 43.0 | 0.02 | 0.00 | 0.0 |
| 17 May | 54.0 | 39.9 | 0.08 | 0.00 | 0.0 |
| 18 May | 63.0 | 37.9 | 0.01 | 0.00 | 0.0 |
| 19 May | 68.0 | 37.9 | 0.00 | 0.00 | 0.0 |
| 20 May | 69.1 | 42.1 | 0.00 | 0.00 | 0.0 |
| 21 May | 72.0 | 41.0 | 0.00 | 0.00 | 0.0 |
| 22 May | 75.0 | 46.9 | 0.00 | 0.00 | 0.0 |
| 23 May | 81.0 | 52.0 | 0.00 | 0.00 | 0.0 |
| 24 May | 80.1 | 50.0 | 0.00 | 0.00 | 0.0 |
| 25 May | 80.1 | 50.0 | 0.00 | 0.00 | 0.0 |
| 26 May | 81.0 | 48.0 | 0.10 | 0.00 | 0.0 |
| 27 May | 59.0 | 48.9 | 0.00 | 0.00 | 0.0 |
| 28 May | 77.0 | 48.9 | 0.00 | 0.00 | 0.0 |
| 29 May | 82.9 | 48.9 | 0.00 | 0.00 | 0.0 |
| 30 May | 70.0 | 48.0 | 0.00 | 0.00 | 0.0 |
| 31 May | 64.9 | 44.1 | 0.00 | 0.00 | 0.0 |
Past weather Dayton
| May 26 | Normal | ||
|---|---|---|---|
| Average high temperature Av. high temp. | 72.8 ºF | 41 ºF | |
| Average low temperature Av. low temp. | 47.3 ºF | 27 ºF | |
| Total precipitation Total precip. | 0.31 inch | 2.28 inch | |
| Total snowfall Total snowfall | 0.00 inch | 6 inch | |
| Highest max temperature Highest max temp. | 82.9 ºF | - | |
| Lowest max temperature Lowest max temp. | 54.0 ºF | - | |
| Highest min temperature Highest min temp. | 68.0 ºF | - | |
| Lowest min temperature Lowest min temp. | 37.9 ºF | - | |
Past weather May 2026 incomplete - Missing data
Geo Dayton - Washington
| Country | United States | |
|---|---|---|
| State | Washington | |
| County | Columbia | |
| City | Dayton | |
| Zip Code | 99328 | |
| Longitude | -117.97 dec. degr. | |
| Latitude | 46.32 dec. degr. | |
| Altitude - Elevation | 1693ft | |
| ICAO | - | |
| IATA | - |
Date and Time Dayton - Washington
| Local Time | 01:23 PM | |
|---|---|---|
| Sunrise | 05:22 AM | |
| Sunset | 08:33 PM | |
| Day/Night | Day | |
| Timezone | Pacific Daylight Time | |
| Timezone DB | America - Los Angeles |
Map of Dayton - Washington
USGS National Map — Open interactive map
Dayton weather averages
| Annual high temperature | 62ºF |
| Annual low temperature | 40ºF |
| Average annual precip. | 19.07 inch |
| Av. annual snowfall | 17 inch |
Station Data
Monthly averages Dayton
Longitude: -117.97, Latitude: 46.32
Average weather Dayton, WA - 99328
Monthly: 1991-2020 normals
History: 2007-2026
Abbreviations
Average precipitation in : Av. precipitation in
Jan: January, Feb: February, ...Jan: January, Feb: February, ...Ja: January, Fe: February, ...