Monthly weather forecast and climate
Fort Irwin, CA

Weather in January

January in Fort Irwin, California, is a moderate winter month, with average temperature varying between 56.8°F (13.8°C) and 41.2°F (5.1°C). In Fort Irwin, California, the average high-temperature is almost the same as in December - a mild 56.8°F (13.8°C). Weather in January »

Weather in February

The last month of the winter, February, is also a moderate month in Fort Irwin, California, with temperature in the range of an average high of 60.4°F (15.8°C) and an average low of 43.3°F (6.3°C). In Fort Irwin, the average high-temperature in February is relatively the same as in January - a still moderate 60.4°F (15.8°C). Weather in February »

Weather in March

The first month of the spring, March, is a comfortable month in Fort Irwin, California, with temperature in the range of an average low of 48.4°F (9.1°C) and an average high of 66.9°F (19.4°C). In March, the average high-temperature slightly increases, from a mild 60.4°F (15.8°C) in February, to an enjoyable 66.9°F (19.4°C). Weather in March »

Weather in April

April in Fort Irwin, California, is a warm spring month, with average temperature varying between 52.3°F (11.3°C) and 73.8°F (23.2°C). In Fort Irwin, the average high-temperature slightly increases, from a comfortable 66.9°F (19.4°C) in March, to a moderately hot 73.8°F (23.2°C). Weather in April »

Weather in May

May, the last month of the spring, in Fort Irwin, is also a moderately hot month, with average temperature varying between 58.5°F (14.7°C) and 81.3°F (27.4°C). In May, the average high-temperature slightly increases, from 73.8°F (23.2°C) in April, to a still warm 81.3°F (27.4°C). Weather in May »

Weather in June

The first month of the summer, June, is a hot month in Fort Irwin, California, with average temperature fluctuating between 67.1°F (19.5°C) and 93.4°F (34.1°C). In Fort Irwin, the average high-temperature in June rises, from a warm 81.3°F (27.4°C) in May, to a tropical 93.4°F (34.1°C). Weather in June »

Weather in July

July in Fort Irwin, California, is a very hot summer month, with temperature in the range of an average high of 98.2°F (36.8°C) and an average low of 74.1°F (23.4°C). July is the warmest month, with an average high-temperature of 98.2°F (36.8°C) and an average low-temperature of 74.1°F (23.4°C). In Fort Irwin, the average relative humidity is 22%. Weather in July »

Weather in August

The last month of the summer, August, is another torrid month in Fort Irwin, California, with average temperature ranging between min 74.7°F (23.7°C) and max 97.3°F (36.3°C). In August, the average high-temperature is relatively the same as in July - a still sweltering 97.3°F (36.3°C). Weather in August »

Weather in September

September, the first month of the autumn, in Fort Irwin, is still a hot month, with average temperature fluctuating between 89.8°F (32.1°C) and 69.1°F (20.6°C). In September, the average high-temperature marginally drops, from a very hot 97.3°F (36.3°C) in August, to a hot 89.8°F (32.1°C). Weather in September »

Weather in October

October, like September, in Fort Irwin, California, is another warm autumn month, with average temperature fluctuating between 77°F (25°C) and 57.6°F (14.2°C). In October, the average high-temperature drops, from a hot 89.8°F (32.1°C) in September, to a warm 77°F (25°C). Weather in October »

Weather in November

The last month of the autumn, November, is another comfortable month in Fort Irwin, California, with temperature in the range of an average high of 65.3°F (18.5°C) and an average low of 47.5°F (8.6°C). In November, the average high-temperature decreases, from a warm 77°F (25°C) in October, to a comfortable 65.3°F (18.5°C). Weather in November »

Weather in December

The first month of the winter, December, is also a fresh month in Fort Irwin, California, with average temperature varying between 55°F (12.8°C) and 40.1°F (4.5°C). The coldest month is December, with an average high-temperature of 55°F (12.8°C) and an average low-temperature of 40.1°F (4.5°C). Weather in December »
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FAQ

How many days does it rain in Fort Irwin?

Throughout the year, in Fort Irwin, there are 39 rainfall days, and 3.27" (83mm) of precipitation is accumulated.

When does it snow in Fort Irwin?

January is the only month when snow falls.

How many days does it snow in Fort Irwin?

In Fort Irwin, during the entire year, snow falls for 0.6 days, and aggregates up to 0.04" (1mm) of snow.

What is the snowiest month in Fort Irwin?

The month with the most snowfall in Fort Irwin is January when snow falls for 0.3 days and typically aggregates up to 0.04" (1mm) of snow.

What is the month with the least sunshine in Fort Irwin?

The month with the least sunshine in Fort Irwin, California, is January, with an average of 7.1h of sunshine.

When it does not snow in Fort Irwin?

February through December are months without snowfall in Fort Irwin.

What is the driest month in Fort Irwin?

June is the month with the least rainfall in Fort Irwin. Rain falls for 0.6 days and accumulates 0.04" (1mm) of precipitation.

When are the longest days in Fort Irwin?

With an average of 14.5h of daylight, June has the longest days of the year in Fort Irwin.

What is the month with the most sunshine in Fort Irwin?

June through August, with an average of 12.1h of sunshine, are months with the most sunshine in Fort Irwin.

What are the months with the highest UV index in Fort Irwin?

Months with the highest UV index are June and July, with an average maximum UV index of 8.

What is the warmest month in Fort Irwin?

The warmest month in Fort Irwin is July, with an average high-temperature of 98.2°F (36.8°C) and an average low-temperature of 74.1°F (23.4°C).

What is the least humid month in Fort Irwin?

August is the least humid month in Fort Irwin, with an average relative humidity of 21%.

When is the lowest UV index in Fort Irwin?

November and December, with an average maximum UV index of 3, are months with the lowest UV index in Fort Irwin.

What is the coldest month in Fort Irwin?

December is the coldest month, with an average high-temperature of 55°F (12.8°C) and an average low-temperature of 40.1°F (4.5°C).

What is the most humid month in Fort Irwin?

The most humid month is December, with an average relative humidity of 47%.

What is the wettest month in Fort Irwin?

The month with the most rainfall in Fort Irwin is December when the rain falls for 4.6 days and typically aggregates up to 0.51" (13mm) of precipitation.

What is the month with the shortest days in Fort Irwin?

With an average of 9.8h of daylight, December has the shortest days of the year.

Average temperature
Fort Irwin, CA

Average temperature - Fort Irwin, CA

The warmest month (with the highest average high temperature) is July (98.2°F).
The month with the lowest average high temperature is December (55°F).

The month with the highest average low temperature is August (74.7°F).
The coldest month (with the lowest average low temperature) is December (40.1°F).

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Average pressure
Fort Irwin, CA

Average pressure - Fort Irwin, CA

The month with the highest atmospheric pressure is January (30.11").
The month with the lowest atmospheric pressure is June (29.79").

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Average wind speed
Fort Irwin, CA

Average wind speed - Fort Irwin, CA

The windiest month (with the highest average wind speed) is May (11.7mph).
The calmest month (with the lowest average wind speed) is January (6mph).

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Average rainfall
Fort Irwin, CA

Average rainfall - Fort Irwin, CA

The wettest month (with the highest rainfall) is December (0.51").
The driest month (with the least rainfall) is June (0.04").

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Average rainfall days
Fort Irwin, CA

Average rainfall days - Fort Irwin, CA

The month with the highest number of rainy days is December (4.6 days).
The month with the least rainy days is June (0.6 days).

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Average snowfall
Fort Irwin, CA

Average snowfall - Fort Irwin, CA

The month with the highest snowfall is January (0.04").
Months with the least snowfall are February, March, April, May, June, July, August, September, October, November and December (0").

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Average snowfall days
Fort Irwin, CA

Average snowfall days - Fort Irwin, CA

Months with the highest number of snowfall days are January and December (0.3 days).
Months with the least snowfall days are February, March, April, May, June, July, August, September, October and November (0 days).

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Average daylight / Average sunshine
Fort Irwin, CA

Average daylight / Average sunshine - Fort Irwin, CA

The month with the longest days is June (Average daylight: 14.5h).
The month with the shortest days is December (Average daylight: 9.8h).

Months with the most sunshine are June, July and August (Average sunshine: 12.1h).
The month with the least sunshine is January (Average sunshine: 7.1h).

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Average sunshine days
Fort Irwin, CA

Average sunshine days - Fort Irwin, CA

The month with the most sunshine days is June (29 days).
The month with the least sunshine days is February (23.5 days).

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Average visibility
Fort Irwin, CA

Average visibility - Fort Irwin, 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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