Cold steppe climate
Climate Mattawa - Washington
Annual high65ºF
Annual low46ºF
Precipitation7.42 inch
| Month | HighºF | LowºF | Precipinch | Snowinch |
|---|---|---|---|---|
| Jan | 41 | 29 | 1.02 | 2 |
| Feb | 47 | 31 | 0.67 | 0 |
| Mar | 58 | 38 | 0.63 | 0 |
| Apr | 66 | 44 | 0.53 | 0 |
| May | 75 | 52 | 0.45 | 0 |
| Jun | 82 | 59 | 0.45 | 0 |
| Jul | 91 | 66 | 0.22 | 0 |
| Aug | 90 | 65 | 0.15 | 0 |
| Sep | 80 | 56 | 0.27 | 0 |
| Oct | 65 | 44 | 0.52 | 0 |
| Nov | 50 | 35 | 1.10 | 0 |
| Dec | 39 | 28 | 1.41 | 1 |
- JanHigh 41ºFLow 29ºFPrecip 1.02 inch
- FebHigh 47ºFLow 31ºFPrecip 0.67 inch
- MarHigh 58ºFLow 38ºFPrecip 0.63 inch
- AprHigh 66ºFLow 44ºFPrecip 0.53 inch
- MayHigh 75ºFLow 52ºFPrecip 0.45 inch
- JunHigh 82ºFLow 59ºFPrecip 0.45 inch
- JulHigh 91ºFLow 66ºFPrecip 0.22 inch
- AugHigh 90ºFLow 65ºFPrecip 0.15 inch
- SepHigh 80ºFLow 56ºFPrecip 0.27 inch
- OctHigh 65ºFLow 44ºFPrecip 0.52 inch
- NovHigh 50ºFLow 35ºFPrecip 1.10 inch
- DecHigh 39ºFLow 28ºFPrecip 1.41 inch
Climate summary
What is the average weather in Mattawa, Washington?
Mattawa experiences a cold semi-arid climate, characterized by very low annual precipitation. Summers are hot and dry, while winters are cold and bring occasional snowfall. The area sees a strong seasonal contrast, with most precipitation occurring during the wetter winter months.
Mattawa weather averages
Annual high65ºF
Annual low46ºF
Precipitation7.42 inch
Snowfall3 inch
Daily normals Mattawa - Washington - January
| Day | HighºF | LowºF | Prec/ | Prec/ |
|---|---|---|---|---|
| Jan 1 | 39.4 | 28.8 | 0.04 | 0.04 |
| Jan 2 | 39.4 | 28.8 | 0.08 | 0.08 |
| Jan 3 | 39.5 | 28.8 | 0.12 | 0.12 |
| Jan 4 | 39.5 | 28.9 | 0.16 | 0.16 |
| Jan 5 | 39.5 | 28.9 | 0.20 | 0.20 |
| Jan 6 | 39.6 | 28.9 | 0.24 | 0.24 |
| Jan 7 | 39.6 | 29.0 | 0.28 | 0.28 |
| Jan 8 | 39.7 | 29.0 | 0.32 | 0.32 |
| Jan 9 | 39.7 | 29.1 | 0.36 | 0.36 |
| Jan 10 | 39.8 | 29.2 | 0.40 | 0.40 |
| Jan 11 | 39.9 | 29.2 | 0.44 | 0.44 |
| Jan 12 | 40.0 | 29.3 | 0.48 | 0.48 |
| Jan 13 | 40.1 | 29.3 | 0.51 | 0.51 |
| Jan 14 | 40.2 | 29.4 | 0.55 | 0.55 |
| Jan 15 | 40.3 | 29.5 | 0.58 | 0.58 |
| Jan 16 | 40.4 | 29.6 | 0.62 | 0.62 |
| Jan 17 | 40.5 | 29.6 | 0.65 | 0.65 |
| Jan 18 | 40.6 | 29.7 | 0.68 | 0.68 |
| Jan 19 | 40.7 | 29.8 | 0.72 | 0.72 |
| Jan 20 | 40.8 | 29.8 | 0.75 | 0.75 |
| Jan 21 | 41.0 | 29.9 | 0.78 | 0.78 |
| Jan 22 | 41.1 | 30.0 | 0.81 | 0.81 |
| Jan 23 | 41.3 | 30.1 | 0.84 | 0.84 |
| Jan 24 | 41.4 | 30.1 | 0.87 | 0.87 |
| Jan 25 | 41.6 | 30.2 | 0.91 | 0.91 |
| Jan 26 | 41.7 | 30.3 | 0.94 | 0.94 |
| Jan 27 | 41.9 | 30.3 | 0.97 | 0.97 |
| Jan 28 | 42.1 | 30.4 | 1.00 | 1.00 |
| Jan 29 | 42.3 | 30.5 | 1.02 | 1.02 |
| Jan 30 | 42.5 | 30.6 | 1.05 | 1.05 |
| Jan 31 | 42.7 | 30.6 | 1.08 | 1.08 |
Precipitation and snow add up through the month (/mo) and the year (/yr)
Weather history Mattawa - October 2026
| Day | HighºF | LowºF | Precip.inch |
|---|---|---|---|
| Oct 1 | 73.0 | 59.0 | 0.00 |
| Oct 2 | 78.1 | 54.0 | 0.00 |
| Oct 3 | – | – | – |
| Oct 4 | – | – | – |
| Oct 5 | – | – | – |
| Oct 6 | – | – | – |
| Oct 7 | 79.0 | 55.9 | 0.00 |
| Oct 8 | 79.0 | 57.9 | 0.00 |
| Oct 9 | 75.0 | 52.0 | 0.00 |
| Oct 10 | 73.0 | 53.1 | 0.00 |
| Oct 11 | 64.0 | 52.0 | 0.03 |
| Oct 12 | 63.0 | 52.0 | 0.00 |
| Oct 13 | 64.0 | 37.0 | 0.00 |
| Oct 14 | 68.0 | 46.9 | 0.00 |
| Oct 15 | 68.0 | 51.1 | 0.00 |
| Oct 16 | 68.0 | 46.9 | 0.00 |
| Oct 17 | 70.0 | 57.0 | 0.00 |
| Oct 18 | 64.9 | 48.9 | 0.00 |
| Oct 19 | 59.0 | 50.0 | 0.00 |
| Oct 20 | 69.1 | 53.1 | 0.00 |
| Oct 21 | 66.0 | 42.1 | 0.00 |
| Oct 22 | 62.1 | 48.9 | 0.02 |
| Oct 23 | 64.9 | 48.9 | 0.00 |
| Oct 24 | 64.9 | 48.0 | 0.00 |
| Oct 25 | 61.0 | 39.0 | 0.00 |
| Oct 26 | 59.0 | 44.1 | 0.02 |
| Oct 27 | 64.0 | 39.0 | 0.00 |
| Oct 28 | 59.0 | 46.0 | 0.00 |
| Oct 29 | 52.0 | 37.9 | 0.00 |
| Oct 30 | – | – | – |
| Oct 31 | – | – | – |
The data for October 2026 is incomplete: some days or values are missing.
- –No data
- –Not yet observed or received
- TTrace, too small to measure
Observed extremes
- Highest max temperature79.0ºF · Oct 7
- Lowest max temperature52.0ºF · Oct 29
- Highest min temperature59.0ºF · Oct 1
- Lowest min temperature37.0ºF · Oct 13
Geo Mattawa - Washington
Location
- Country
- United States
- State
- Washington
- County
- –
- City
- Mattawa
- Zip Code
- 99349
- Elevation
- 764 ft
- Longitude
- -119.90
- Latitude
- 46.74
- ICAO
- –
- IATA
- –