Climate for Station: Chelan, Washington, United States
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Station Statistics
10-Year Trend
High: +0.50 °C/decade
Low: +0.19 °C/decade
Rain: -0.22 mm/decade
25-Year Trend
High: +0.40 °C/decade
Low: -0.90 °C/decade
Rain: +0.03 mm/decade
50-Year Trend
High: +0.22 °C/decade
Low: +0.09 °C/decade
Rain: +0.02 mm/decade
All-Time Trend
High: +0.12 °C/decade
Low: +0.07 °C/decade
Rain: +0.02 mm/decade
Percentage Above-Average Days
Last 12 Months: 54.9%
This Year: 33.3%
Precipitation Concentration Index (PCI) ℹ️
Last 12 Months: 19.1
Historical Average: 17.4
Percentile Rank of Last 12 Months ℹ️
High: 90th percentile
Low: 42nd percentile
Rain: 69th percentile
Change in Variance ℹ️
High: +18.3%
Low: +10.9%
Intraday: +31.9%
Data Coverage
74.4%
First Year of Data
1980
Station Location
Weather Records
| Max High | Avg High | Min High | Max Avg | Avg Avg | Min Avg | Max Low | Avg Low | Min Low | Max Precipitation | Avg Precipitation | Max Snow | Avg Snow | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Record | 43.9 °C | — | -21.7 °C | — | — | — | 25.6 °C | — | -25.6 °C | 47.8 mm | — | 406.0 mm | — |
| January | 16.7 °C | 0.5 °C | -20.0 °C | — | — | — | 7.8 °C | -5.1 °C | -25.6 °C | 35.6 mm | 1.2 mm | 381.0 mm | 8.7 mm |
| February | 17.2 °C | 4.6 °C | -14.4 °C | — | — | — | 8.3 °C | -3.2 °C | -18.3 °C | 27.2 mm | 1.0 mm | 229.0 mm | 4.4 mm |
| March | 22.2 °C | 10.7 °C | -6.7 °C | — | — | — | 12.8 °C | 0.3 °C | -13.3 °C | 36.1 mm | 0.8 mm | 127.0 mm | 1.6 mm |
| April | 31.1 °C | 16.3 °C | 4.4 °C | — | — | — | 13.3 °C | 4.2 °C | -6.1 °C | 27.9 mm | 0.6 mm | 25.0 mm | 0.0 mm |
| May | 36.7 °C | 21.6 °C | 9.4 °C | — | — | — | 19.4 °C | 8.8 °C | -1.1 °C | 45.7 mm | 0.7 mm | 0.0 mm | 0.0 mm |
| June | 43.9 °C | 25.5 °C | 11.1 °C | — | — | — | 25.0 °C | 12.8 °C | 0.6 °C | 47.8 mm | 0.6 mm | 0.0 mm | 0.0 mm |
| July | 42.8 °C | 30.1 °C | 16.1 °C | — | — | — | 25.6 °C | 16.0 °C | 2.8 °C | 43.2 mm | 0.3 mm | 0.0 mm | 0.0 mm |
| August | 41.1 °C | 29.9 °C | 15.6 °C | — | — | — | 25.6 °C | 15.5 °C | 5.6 °C | 37.8 mm | 0.3 mm | 0.0 mm | 0.0 mm |
| September | 36.1 °C | 24.3 °C | 7.8 °C | — | — | — | 21.1 °C | 10.4 °C | -3.3 °C | 29.7 mm | 0.4 mm | 0.0 mm | 0.0 mm |
| October | 31.1 °C | 16.3 °C | -1.7 °C | — | — | — | 16.1 °C | 4.7 °C | -8.9 °C | 36.6 mm | 0.7 mm | 13.0 mm | 0.0 mm |
| November | 22.2 °C | 7.0 °C | -15.0 °C | — | — | — | 9.4 °C | -0.1 °C | -19.4 °C | 33.0 mm | 1.3 mm | 330.0 mm | 2.7 mm |
| December | 20.6 °C | 1.0 °C | -21.7 °C | — | — | — | 8.9 °C | -4.0 °C | -25.6 °C | 38.1 mm | 1.6 mm | 406.0 mm | 10.4 mm |
Plots
Current Year Climate Trends vs Historical
Max Temperature this Year | 1 of 4
Climate 12-Month Moving Averages
Max Temperature 12-Month MA | 1 of 4
Daily Average Temperatures Throughout the Year
Average Max Temperature Throughout Year | 1 of 3
