Climate for Station: Pasadena, California, United States
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Station Statistics
10-Year Trend
High: -0.37 °C/decade
Low: +0.97 °C/decade
Rain: +0.46 mm/decade
25-Year Trend
High: +0.59 °C/decade
Low: +0.25 °C/decade
Rain: +0.07 mm/decade
50-Year Trend
High: +0.20 °C/decade
Low: +0.53 °C/decade
Rain: -0.07 mm/decade
All-Time Trend
High: +0.23 °C/decade
Low: +0.43 °C/decade
Rain: -0.07 mm/decade
Percentage Above-Average Days
Last 12 Months: 52.6%
This Year: 33.3%
Precipitation Concentration Index (PCI) ℹ️
Last 12 Months: 18.6
Historical Average: 30.3
Percentile Rank of Last 12 Months ℹ️
High: 80th percentile
Low: 90th percentile
Rain: 17th percentile
Change in Variance ℹ️
High: +5.2%
Low: -5.8%
Intraday: -29.1%
Data Coverage
86.7%
First Year of Data
1893
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 | 46.1 °C | — | 5.0 °C | 36.6 °C | — | 0.0 °C | 29.4 °C | — | -6.1 °C | 195.6 mm | — | 76.0 mm | — |
| January | 33.9 °C | 19.3 °C | 5.0 °C | 25.1 °C | 12.7 °C | 0.0 °C | 20.0 °C | 6.2 °C | -6.1 °C | 179.8 mm | 3.2 mm | 76.0 mm | 0.0 mm |
| February | 33.3 °C | 20.1 °C | 6.1 °C | 25.7 °C | 13.3 °C | 3.7 °C | 17.2 °C | 7.0 °C | -3.3 °C | 158.8 mm | 3.5 mm | 0.0 mm | 0.0 mm |
| March | 36.7 °C | 21.2 °C | 7.2 °C | 25.7 °C | 14.4 °C | 6.4 °C | 20.6 °C | 8.0 °C | -5.0 °C | 195.6 mm | 2.4 mm | 0.0 mm | 0.0 mm |
| April | 40.6 °C | 23.2 °C | 9.4 °C | 28.7 °C | 16.5 °C | 7.2 °C | 22.2 °C | 9.6 °C | -0.6 °C | 96.8 mm | 1.0 mm | 0.0 mm | 0.0 mm |
| May | 40.0 °C | 24.7 °C | 11.1 °C | 30.8 °C | 18.2 °C | 10.7 °C | 22.8 °C | 11.5 °C | 0.0 °C | 46.2 mm | 0.3 mm | 0.0 mm | 0.0 mm |
| June | 45.0 °C | 27.9 °C | 14.4 °C | 34.7 °C | 20.8 °C | 12.7 °C | 25.6 °C | 13.5 °C | 5.0 °C | 19.6 mm | 0.1 mm | 0.0 mm | 0.0 mm |
| July | 45.0 °C | 31.5 °C | 16.7 °C | 35.2 °C | 23.4 °C | 16.9 °C | 27.8 °C | 15.8 °C | 7.2 °C | 11.4 mm | 0.0 mm | 0.0 mm | 0.0 mm |
| August | 42.8 °C | 32.0 °C | 16.7 °C | 33.4 °C | 24.0 °C | 16.6 °C | 29.4 °C | 16.1 °C | 6.1 °C | 62.0 mm | 0.1 mm | 0.0 mm | 0.0 mm |
| September | 46.1 °C | 30.9 °C | 16.7 °C | 36.6 °C | 23.0 °C | 14.5 °C | 28.3 °C | 15.1 °C | 5.0 °C | 124.5 mm | 0.2 mm | 0.0 mm | 0.0 mm |
| October | 42.2 °C | 27.3 °C | 11.7 °C | 34.2 °C | 19.6 °C | 8.9 °C | 23.9 °C | 12.2 °C | 2.2 °C | 82.8 mm | 0.5 mm | 0.0 mm | 0.0 mm |
| November | 38.3 °C | 23.4 °C | 9.4 °C | 26.2 °C | 15.6 °C | 7.6 °C | 22.2 °C | 8.7 °C | -3.3 °C | 141.0 mm | 1.2 mm | 0.0 mm | 0.0 mm |
| December | 33.9 °C | 19.6 °C | 5.0 °C | 24.7 °C | 12.6 °C | 3.2 °C | 15.6 °C | 6.5 °C | -3.9 °C | 156.7 mm | 2.4 mm | 0.0 mm | 0.0 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
