Annual Weather Averages in Roberts Field
Roberts Field is 31 miles from Monrovia, so the actual climate in Monrovia can vary a bit.
Based on weather reports collected during 2012–2021.
All Year Climate & Weather Averages in Monrovia
High Temp: 91 °F
Low Temp: 73 °F
Mean Temp: 81 °F
Precipitation: 5.13"
Humidity: 86%
Dew Point: 75 °F
Wind: 7 mph
Pressure: 29.89 "Hg
Visibility: 6 mi
January Climate & Weather Averages in Monrovia
High Temp: 90 °F
Low Temp: 73 °F
Mean Temp: 81 °F
Precipitation: 0.89"
Humidity: 81%
Dew Point: 73 °F
Wind: 7 mph
Pressure: 29.87 "Hg
Visibility: 5 mi
February Climate & Weather Averages in Monrovia
High Temp: 90 °F
Low Temp: 75 °F
Mean Temp: 83 °F
Precipitation: 1.18"
Humidity: 80%
Dew Point: 74 °F
Wind: 8 mph
Pressure: 29.85 "Hg
Visibility: 5 mi
March Climate & Weather Averages in Monrovia
High Temp: 91 °F
Low Temp: 75 °F
Mean Temp: 83 °F
Precipitation: 2.31"
Humidity: 81%
Dew Point: 75 °F
Wind: 8 mph
Pressure: 29.85 "Hg
Visibility: 6 mi
April Climate & Weather Averages in Monrovia
High Temp: 90 °F
Low Temp: 75 °F
Mean Temp: 83 °F
Precipitation: 3.37"
Humidity: 83%
Dew Point: 76 °F
Wind: 8 mph
Pressure: 29.86 "Hg
Visibility: 6 mi
May Climate & Weather Averages in Monrovia
High Temp: 88 °F
Low Temp: 75 °F
Mean Temp: 82 °F
Precipitation: 7.79"
Humidity: 86%
Dew Point: 76 °F
Wind: 7 mph
Pressure: 29.89 "Hg
Visibility: 6 mi
June Climate & Weather Averages in Monrovia
High Temp: 85 °F
Low Temp: 75 °F
Mean Temp: 80 °F
Precipitation: 8.20"
Humidity: 89%
Dew Point: 75 °F
Wind: 7 mph
Pressure: 29.94 "Hg
Visibility: 6 mi
July Climate & Weather Averages in Monrovia
High Temp: 82 °F
Low Temp: 74 °F
Mean Temp: 78 °F
Precipitation: 7.30"
Humidity: 90%
Dew Point: 74 °F
Wind: 8 mph
Pressure: 29.96 "Hg
Visibility: 6 mi
August Climate & Weather Averages in Monrovia
High Temp: 82 °F
Low Temp: 74 °F
Mean Temp: 78 °F
Precipitation: 8.16"
Humidity: 90%
Dew Point: 74 °F
Wind: 8 mph
Pressure: 29.95 "Hg
Visibility: 6 mi
September Climate & Weather Averages in Monrovia
High Temp: 83 °F
Low Temp: 74 °F
Mean Temp: 79 °F
Precipitation: 9.04"
Humidity: 90%
Dew Point: 75 °F
Wind: 8 mph
Pressure: 29.93 "Hg
Visibility: 5 mi
October Climate & Weather Averages in Monrovia
High Temp: 86 °F
Low Temp: 75 °F
Mean Temp: 80 °F
Precipitation: 7.40"
Humidity: 88%
Dew Point: 76 °F
Wind: 7 mph
Pressure: 29.89 "Hg
Visibility: 6 mi
November Climate & Weather Averages in Monrovia
High Temp: 88 °F
Low Temp: 75 °F
Mean Temp: 81 °F
Precipitation: 4.81"
Humidity: 86%
Dew Point: 76 °F
Wind: 6 mph
Pressure: 29.86 "Hg
Visibility: 6 mi
December Climate & Weather Averages in Monrovia
High Temp: 89 °F
Low Temp: 74 °F
Mean Temp: 82 °F
Precipitation: 1.15"
Humidity: 82%
Dew Point: 74 °F
Wind: 6 mph
Pressure: 29.87 "Hg
Visibility: 5 mi