Climate Prosser - Washington
| JanJa | FebFe | MarMa | AprAp | MayMa | JunJu | |
|---|---|---|---|---|---|---|
| Average high in ºF Av. high Hi | 42 | 48 | 58 | 66 | 74 | 82 |
| Average low in ºF Av. low Lo | 28 | 31 | 37 | 41 | 48 | 54 |
| Av. precipitation in inch Av. precip. Pre. | 1.13 | 0.83 | 0.78 | 0.70 | 0.70 | 0.73 |
| Av. snowfall in inch Snowfall Sn | 0 | 0 | 0 | 0 | 0 | 0 |
| JulJu | AugAu | SepSe | OctOc | NovNo | DecDe | |
|---|---|---|---|---|---|---|
| Average high in ºF Av. high Hi | 90 | 89 | 80 | 66 | 50 | 39 |
| Average low in ºF Av. low Lo | 58 | 57 | 50 | 41 | 33 | 27 |
| Av. precipitation in inch Av. precip. Pre. | 0.20 | 0.27 | 0.47 | 0.75 | 1.02 | 1.36 |
| Av. snowfall in inch Snowfall Sn | 0 | 0 | 0 | 0 | 0 | 3 |
What is the average weather in Prosser, Washington?
Prosser experiences a cold semi-arid climate, defined by very low annual precipitation. Summers are hot and dry, with rainfall generally low, often arriving in brief showers. Winters are cold, bringing occasional snowfall, and are typically the wettest season, contrasting with the dry summer months.
Prosser Climate Graph - Washington Climate Chart
Weather history Prosser - May 2026
| Day | High ºF | Low ºF | Precip. inch | Snow inch | Snow d. inch |
|---|---|---|---|---|---|
| 01 May | 77.0 | 46.9 | 0.00 | 0.00 | 0.0 |
| 02 May | 80.1 | 46.9 | 0.00 | 0.00 | 0.0 |
| 03 May | 87.1 | 54.0 | 0.00 | 0.00 | 0.0 |
| 04 May | 87.1 | 54.0 | 0.00 | 0.00 | 0.0 |
| 05 May | 89.1 | 60.1 | 0.00 | 0.00 | 0.0 |
| 06 May | 84.9 | 55.0 | 0.00 | 0.00 | 0.0 |
| 07 May | 87.1 | 51.1 | 0.00 | 0.00 | 0.0 |
| 08 May | 87.1 | 51.1 | 0.00 | 0.00 | 0.0 |
| 09 May | 87.1 | 48.0 | 0.00 | 0.00 | 0.0 |
| 10 May | 78.1 | 48.9 | 0.00 | 0.00 | 0.0 |
| 11 May | 81.0 | 46.9 | 0.00 | 0.00 | 0.0 |
| 12 May | 78.1 | 48.9 | 0.00 | 0.00 | 0.0 |
| 13 May | 86.0 | 48.9 | 0.00 | 0.00 | 0.0 |
| 14 May | 87.1 | 43.0 | 0.16 | 0.00 | 0.0 |
| 15 May | 66.9 | 44.1 | 0.00 | 0.00 | 0.0 |
| 16 May | 66.9 | 39.9 | 0.00 | 0.00 | 0.0 |
| 17 May | 66.9 | 39.9 | 0.00 | 0.00 | 0.0 |
| 18 May | 70.0 | 39.9 | 0.00 | 0.00 | 0.0 |
| 19 May | 73.9 | 48.0 | 0.00 | 0.00 | 0.0 |
| 20 May | 75.9 | 48.9 | 0.00 | 0.00 | 0.0 |
| 21 May | 75.9 | 48.9 | 0.00 | 0.00 | 0.0 |
| 22 May | 78.1 | 48.9 | 0.00 | 0.00 | 0.0 |
| 23 May | 84.0 | 45.0 | 0.00 | 0.00 | 0.0 |
| 24 May | 87.1 | 53.1 | 0.00 | 0.00 | 0.0 |
| 25 May | 87.1 | 55.9 | 0.00 | 0.00 | 0.0 |
| 26 May | 81.0 | 50.0 | 0.24 | 0.00 | 0.0 |
| 27 May | 66.9 | 51.1 | 0.00 | 0.00 | 0.0 |
| 28 May | 81.0 | 54.0 | 0.00 | 0.00 | 0.0 |
| 29 May | 91.0 | 54.0 | 0.70 | 0.00 | 0.0 |
| 30 May | 91.0 | 46.9 | 0.00 | 0.00 | 0.0 |
| 31 May | 72.0 | 44.1 | 0.00 | 0.00 | 0.0 |
Past weather Prosser
| May 26 | Normal | ||
|---|---|---|---|
| Average high temperature Av. high temp. | 80.4 ºF | 42 ºF | |
| Average low temperature Av. low temp. | 48.9 ºF | 28 ºF | |
| Total precipitation Total precip. | 1.10 inch | 1.13 inch | |
| Total snowfall Total snowfall | 0.00 inch | 0 inch | |
| Highest max temperature Highest max temp. | 91.0 ºF | - | |
| Lowest max temperature Lowest max temp. | 66.9 ºF | - | |
| Highest min temperature Highest min temp. | 60.1 ºF | - | |
| Lowest min temperature Lowest min temp. | 39.9 ºF | - | |
Past weather May 2026 incomplete - Missing data
Geo Prosser - Washington
| Country | United States | |
|---|---|---|
| State | Washington | |
| County | Benton | |
| City | Prosser | |
| Zip Code | 99350 | |
| Longitude | -119.79 dec. degr. | |
| Latitude | 46.21 dec. degr. | |
| Altitude - Elevation | 682ft | |
| ICAO | - | |
| IATA | - |
Date and Time Prosser - Washington
| Local Time | 06:53 AM | |
|---|---|---|
| Sunrise | 05:08 AM | |
| Sunset | 08:56 PM | |
| Day/Night | Day | |
| Timezone | Pacific Daylight Time | |
| Timezone DB | America - Los Angeles |
Map of Prosser - Washington
USGS National Map — Open interactive map
Prosser weather averages
| Annual high temperature | 65ºF |
| Annual low temperature | 42ºF |
| Average annual precip. | 8.94 inch |
| Av. annual snowfall | 3 inch |
Station Data
Monthly averages Prosser
Longitude: -119.791, Latitude: 46.2134
Average weather Prosser, WA - 99350
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, ...