Monthly weather forecast and climate
Grand Terrace, CA

Weather in January

January in Grand Terrace, California, is an enjoyable winter month, with temperature in the range of an average high of 62.2°F (16.8°C) and an average low of 44.6°F (7°C). In January, the average high-temperature is practically the same as in December - an enjoyable 62.2°F (16.8°C). Weather in January »

Weather in February

The last month of the winter, February, is also an enjoyable month in Grand Terrace, California, with average temperature varying between 43.5°F (6.4°C) and 62.4°F (16.9°C). In February, the average high-temperature is practically the same as in January - a still comfortable 62.4°F (16.9°C). Weather in February »

Weather in March

The first month of the spring, March, is also an enjoyable month in Grand Terrace, California, with average temperature fluctuating between 66.9°F (19.4°C) and 45.7°F (7.6°C). In March, the average high-temperature is relatively the same as in February - a still comfortable 66.9°F (19.4°C). Weather in March »

Weather in April

April in Grand Terrace, California, is an agreeable spring month, with average temperature ranging between min 48.7°F (9.3°C) and max 71.4°F (21.9°C). In Grand Terrace, California, the average high-temperature in April is practically the same as in March - an agreeable 71.4°F (21.9°C). Weather in April »

Weather in May

May, the last month of the spring, in Grand Terrace, is a moderately hot month, with average temperature varying between 76.5°F (24.7°C) and 52.7°F (11.5°C). In May, the average high-temperature is relatively the same as in April - a moderately hot 76.5°F (24.7°C). Weather in May »

Weather in June

June, the first month of the summer, in Grand Terrace, is still a warm month, with temperature in the range of an average high of 85.1°F (29.5°C) and an average low of 58.5°F (14.7°C). In Grand Terrace, the average high-temperature in June marginally rises, from 76.5°F (24.7°C) in May, to a still moderately hot 85.1°F (29.5°C). Weather in June »

Weather in July

July in Grand Terrace, California, is a hot summer month, with temperature in the range of an average low of 64.9°F (18.3°C) and an average high of 91°F (32.8°C). In July, the average high-temperature marginally rises, from a warm 85.1°F (29.5°C) in June, to a hot 91°F (32.8°C). Weather in July »

Weather in August

August, the last month of the summer, in Grand Terrace, is another tropical month, with temperature in the range of an average high of 91.9°F (33.3°C) and an average low of 65.8°F (18.8°C). The warmest month is August, with an average high-temperature of 91.9°F (33.3°C) and an average low-temperature of 65.8°F (18.8°C). Weather in August »

Weather in September

September, the first month of the autumn, in Grand Terrace, is still a hot month, with average temperature ranging between max 87.4°F (30.8°C) and min 63.3°F (17.4°C). In Grand Terrace, the average high-temperature in September is relatively the same as in August - a still tropical 87.4°F (30.8°C). Weather in September »

Weather in October

October, like September, in Grand Terrace, California, is a moderately hot autumn month, with temperature in the range of an average low of 56.3°F (13.5°C) and an average high of 78.1°F (25.6°C). In Grand Terrace, the average high-temperature in October decreases, from a hot 87.4°F (30.8°C) in September, to a moderately hot 78.1°F (25.6°C). Weather in October »

Weather in November

November, the last month of the autumn, in Grand Terrace, is another pleasant month, with average temperature fluctuating between 68.9°F (20.5°C) and 49.1°F (9.5°C). In Grand Terrace, the average high-temperature decreases, from a warm 78.1°F (25.6°C) in October, to an agreeable 68.9°F (20.5°C). Weather in November »

Weather in December

December, the first month of the winter, in Grand Terrace, is still a mild month, with temperature in the range of an average low of 43.7°F (6.5°C) and an average high of 59.9°F (15.5°C). December is the coldest month, with an average high-temperature of 59.9°F (15.5°C) and an average low-temperature of 43.7°F (6.5°C). Weather in December »
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FAQ

How many days does it rain in Grand Terrace?

In Grand Terrace, during the entire year, the rain falls for 46.6 days and collects up to 6.18" (157mm) of precipitation.

How many days does it snow in Grand Terrace?

In Grand Terrace, California, during the entire year, snow falls for 0.1 days.

When it does not snow in Grand Terrace?

January, March through December are months without snowfall.

What is the most humid month in Grand Terrace?

The most humid month in Grand Terrace, California, is February, with an average relative humidity of 53%.

When does it snow in Grand Terrace?

February is the only month when snow falls.

What is the snowiest month in Grand Terrace?

The month with the most snowfall days is February when snow falls for 0.1 days.

What is the driest month in Grand Terrace?

The month with the least rainfall in Grand Terrace, California, is June when the rain falls for 1.2 days and typically collects 0.04" (1mm) of precipitation.

When are the longest days in Grand Terrace?

With an average of 14.4h of daylight, June has the longest days of the year in Grand Terrace, California.

What are the months with the highest UV index in Grand Terrace?

Months with the highest UV index in Grand Terrace, California, are June through August, with an average maximum UV index of 7.

What month has the most sunshine in Grand Terrace?

The month with the most sunshine is July, with an average of 12.2h of sunshine.

What is the warmest month in Grand Terrace?

The warmest month in Grand Terrace, California, is August, with an average high-temperature of 91.9°F (33.3°C) and an average low-temperature of 65.8°F (18.8°C).

What is the least humid month in Grand Terrace?

The least humid month in Grand Terrace is August, with an average relative humidity of 38%.

What is the coldest month in Grand Terrace?

With an average high-temperature of 59.9°F (15.5°C) and an average low-temperature of 43.7°F (6.5°C), December is the coldest month in Grand Terrace.

What is the rainiest month in Grand Terrace?

December is the month with the most rainfall. Rain falls for 6 days and accumulates 1.42" (36mm) of precipitation.

What is the month with the shortest days in Grand Terrace?

The month with the shortest days in Grand Terrace, California, is December, with an average of 9.9h of daylight.

What is the month with the least sunshine in Grand Terrace?

With an average of 6.9h of sunshine, December has the least sunshine of the year.

What is the month with the lowest UV index in Grand Terrace?

December is the month with the lowest UV index, with an average maximum UV index of 3.

Average temperature
Grand Terrace, CA

Average temperature - Grand Terrace, CA

The warmest month (with the highest average high temperature) is August (91.9°F).
The month with the lowest average high temperature is December (59.9°F).

The month with the highest average low temperature is August (65.8°F).
The coldest month (with the lowest average low temperature) is February (43.5°F).

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Average pressure
Grand Terrace, CA

Average pressure - Grand Terrace, CA

The month with the highest atmospheric pressure is January (30.1").
The month with the lowest atmospheric pressure is June (29.85").

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Average wind speed
Grand Terrace, CA

Average wind speed - Grand Terrace, CA

The windiest months (with the highest average wind speed) are April and May (6mph).
The calmest month (with the lowest average wind speed) is September (4.5mph).

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Average humidity
Grand Terrace, CA

Average humidity - Grand Terrace, CA

The month with the highest relative humidity is February (53%).
The month with the lowest relative humidity is August (38%).

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Average rainfall
Grand Terrace, CA

Average rainfall - Grand Terrace, CA

The wettest month (with the highest rainfall) is December (1.42").
The driest month (with the least rainfall) is June (0.04").

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Average rainfall days
Grand Terrace, CA

Average rainfall days - Grand Terrace, CA

The month with the highest number of rainy days is March (6.7 days).
The month with the least rainy days is June (1.2 days).

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Average snowfall days
Grand Terrace, CA

Average snowfall days - Grand Terrace, CA

The month with the highest number of snowfall days is February (0.1 days).
Months with the least snowfall days are January, March, April, May, June, July, August, September, October, November and December (0 days).

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Average daylight / Average sunshine
Grand Terrace, CA

Average daylight / Average sunshine - Grand Terrace, CA

The month with the longest days is June (Average daylight: 14.4h).
The month with the shortest days is December (Average daylight: 9.9h).

The month with the most sunshine is July (Average sunshine: 12.2h).
The month with the least sunshine is December (Average sunshine: 6.9h).

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Average sunshine days
Grand Terrace, CA

Average sunshine days - Grand Terrace, CA

Months with the most sunshine days are June and October (27.9 days).
The month with the least sunshine days is February (21.7 days).

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Average visibility
Grand Terrace, CA

Average visibility - Grand Terrace, CA

Months with the highest visibility are January, February, March, April, May, June, July, August, September, October, November and December (6mi).
Months with the lowest visibility are January, February, March, April, May, June, July, August, September, October, November and December (6mi).

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