Grand Terrace, CA Weather - Forecast & Monthly Averages

TEMPERATURE
HUMIDITY
PRESSURE	101900
WIND COND.	90 7.6

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Weather Quick Facts

The highest monthly average temperature in Grand Terrace for August is 77.8 degrees
The lowest monthly average temperature in Grand Terrace for December is 55.1 degrees
The most monthly precipitation in Grand Terrace occurs in December with 1.9 inches
The air quality index in Grand Terrace is 111% worse than the national average
The pollution index in Grand Terrace is 1058% worse than the national average

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Grand Terrace Average Temperature

In the event that the weather data was unavailable for this city, estimates based upon nearby cities were used.
Month	Temp. _(min)	Temp. _(max)	Temp. _(avg)	Precipitation
January	44°F	70°F	56°F	1.6"
February	45°F	72°F	57°F	1.2"
March	47°F	75°F	60°F	0.7"
April	50°F	78°F	63°F	0.5"
May	55°F	82°F	66°F	0.2"
June	59°F	89°F	72°F	0.0"
July	65°F	94°F	77°F	0.2"
August	65°F	95°F	78°F	0.1"
September	63°F	94°F	76°F	0.2"
October	56°F	85°F	69°F	0.2"
November	49°F	77°F	62°F	0.5"
December	44°F	69°F	55°F	1.9"

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Grand Terrace air quality index & pollution index

In the event that the air quality/pollution data was unavailable for this city, estimates based upon nearby cities were used.
Index	Grand Terrace	California	National
Air quality index	89	55	42
Pollution index	31,575,300	10,473,190	2,726,193

Grand Terrace air quality

Measurement	Total
Days measured	365
Days with good air quality	42
Days with moderate air quality	178
Days w/ poor A.Q. for sensitive groups	79
Days with unhealthy air quality	58

Air quality details

Pollutant	Total
Arsenic	0.110%
Benzene	0.260%
Carbon Tetrachloride	0.020%
Lead	0.350%
Mercury	0.280%

Average monthly Grand Terrace temperature with heat index

Grand Terrace monthly precipitation with daily maximum

Grand Terrace monthly snow depth with daily maximum

Grand Terrace monthly wind speed information

Nearby cities with good air quality

City	Population	Air Quality Index	National Avg.
Calimesa, CA	9,156	89	78.0%
Loma Linda, CA	24,239	89	78.0%
Riverside, CA	327,569	89	78.0%
El Sobrante CDP (Contra Costa County), CA	12,963	89	78.0%
Lakeview, CA	2,452	89	78.0%
Grand Terrace, CA	12,559	89	78.0%

Cities with similar population

City	Population	Air Quality Index	National Avg.
Leeds, AL	12,555	53	6.0%
Bedford, OH	12,555	50	= 100
Mandeville, LA	12,567	30	40.0%
Gulf Shores, AL	12,550	37	26.0%
Vinings, GA	12,546	52	4.0%
Grand Terrace, CA	12,559	89	78.0%

Source: The Grand Terrace, CA weather data displayed above is derived from the NOAA (National Oceanic and Atmospheric). Air quality and pollution data is derived from the EPA (United States Environmental Protection Agency). Air quality and pollution levels measured in a particular area may not be representative of the entire county.