Annual Weather Averages in Thermal Airport
Thermal Airport is 46 miles from Julian, so the actual climate in Julian can vary a bit.
Based on weather reports collected during 1992–2021.
All Year Climate & Weather Averages in Julian
High Temp: 108 °F
Low Temp: 37 °F
Mean Temp: 73 °F
Precipitation: 0.25"
Humidity: 37%
Dew Point: 43 °F
Wind: 9 mph
Pressure: 29.88 "Hg
Visibility: 13 mi
January Climate & Weather Averages in Julian
High Temp: 72 °F
Low Temp: 39 °F
Mean Temp: 55 °F
Precipitation: 0.64"
Humidity: 47%
Dew Point: 33 °F
Wind: 6 mph
Pressure: 30.07 "Hg
Visibility: 13 mi
February Climate & Weather Averages in Julian
High Temp: 75 °F
Low Temp: 42 °F
Mean Temp: 58 °F
Precipitation: 0.60"
Humidity: 44%
Dew Point: 35 °F
Wind: 8 mph
Pressure: 30.00 "Hg
Visibility: 13 mi
March Climate & Weather Averages in Julian
High Temp: 82 °F
Low Temp: 49 °F
Mean Temp: 65 °F
Precipitation: 0.30"
Humidity: 37%
Dew Point: 37 °F
Wind: 10 mph
Pressure: 29.94 "Hg
Visibility: 13 mi
April Climate & Weather Averages in Julian
High Temp: 88 °F
Low Temp: 55 °F
Mean Temp: 72 °F
Precipitation: 0.09"
Humidity: 31%
Dew Point: 38 °F
Wind: 13 mph
Pressure: 29.86 "Hg
Visibility: 13 mi
May Climate & Weather Averages in Julian
High Temp: 96 °F
Low Temp: 63 °F
Mean Temp: 79 °F
Precipitation: 0.02"
Humidity: 31%
Dew Point: 44 °F
Wind: 13 mph
Pressure: 29.78 "Hg
Visibility: 13 mi
June Climate & Weather Averages in Julian
High Temp: 104 °F
Low Temp: 69 °F
Mean Temp: 86 °F
Precipitation: 0.01"
Humidity: 28%
Dew Point: 48 °F
Wind: 11 mph
Pressure: 29.73 "Hg
Visibility: 13 mi
July Climate & Weather Averages in Julian
High Temp: 108 °F
Low Temp: 76 °F
Mean Temp: 92 °F
Precipitation: 0.15"
Humidity: 31%
Dew Point: 56 °F
Wind: 9 mph
Pressure: 29.76 "Hg
Visibility: 13 mi
August Climate & Weather Averages in Julian
High Temp: 107 °F
Low Temp: 76 °F
Mean Temp: 91 °F
Precipitation: 0.13"
Humidity: 33%
Dew Point: 57 °F
Wind: 8 mph
Pressure: 29.75 "Hg
Visibility: 13 mi
September Climate & Weather Averages in Julian
High Temp: 102 °F
Low Temp: 68 °F
Mean Temp: 85 °F
Precipitation: 0.31"
Humidity: 34%
Dew Point: 52 °F
Wind: 8 mph
Pressure: 29.77 "Hg
Visibility: 13 mi
October Climate & Weather Averages in Julian
High Temp: 92 °F
Low Temp: 56 °F
Mean Temp: 74 °F
Precipitation: 0.20"
Humidity: 37%
Dew Point: 44 °F
Wind: 8 mph
Pressure: 29.86 "Hg
Visibility: 13 mi
November Climate & Weather Averages in Julian
High Temp: 80 °F
Low Temp: 44 °F
Mean Temp: 62 °F
Precipitation: 0.17"
Humidity: 42%
Dew Point: 36 °F
Wind: 6 mph
Pressure: 29.99 "Hg
Visibility: 13 mi
December Climate & Weather Averages in Julian
High Temp: 70 °F
Low Temp: 37 °F
Mean Temp: 53 °F
Precipitation: 0.33"
Humidity: 47%
Dew Point: 32 °F
Wind: 6 mph
Pressure: 30.07 "Hg
Visibility: 12 mi