Climate and monthly weather forecast
Sierra Vista, CA

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Weather in January

January, the same as December, in Sierra Vista, California, is another mild winter month, with an average temperature fluctuating between 42.4°F (5.8°C) and 58.8°F (14.9°C). The high-temperature average in January for Sierra Vista is a still moderate 58.8°F (14.9°C), staying closely aligned with December's conditions. Weather in January »

Weather in February

February, the last month of the winter in Sierra Vista, is a comfortable month, with an average temperature varying between 61.3°F (16.3°C) and 42.4°F (5.8°C). Entering February, the average high-temperature is recorded at a still refreshing 61.3°F (16.3°C), exhibiting a minimal shift from January's 58.8°F (14.9°C). Weather in February »

Weather in March

The first month of the spring, March, is still a refreshing month in Sierra Vista, California, with an average temperature fluctuating between 66.7°F (19.3°C) and 45.7°F (7.6°C). Observing a minor shift, the average high-temperature during March adjusts from February's enjoyable 61.3°F (16.3°C) to a still comfortable 66.7°F (19.3°C). Weather in March »

Weather in April

April in Sierra Vista, California, is a moderately hot spring month, with an average temperature fluctuating between 73.4°F (23°C) and 49.6°F (9.8°C). As Sierra Vista transitions into April, the average high-temperature is observed to slightly rise from an enjoyable 66.7°F (19.3°C) in March to a warm 73.4°F (23°C). Weather in April »

Weather in May

The last month of the spring, May, is also a moderately hot month in Sierra Vista, California, with an average temperature varying between 81.5°F (27.5°C) and 55.4°F (13°C). The start of May is characterized by a subtle increase in the average high-temperature, transitioning from 73.4°F (23°C) in April to a still warm 81.5°F (27.5°C). Weather in May »

Weather in June

The first month of the summer, June, is a tropical month in Sierra Vista, California, with an average temperature ranging between min 61.7°F (16.5°C) and max 92.7°F (33.7°C). Sierra Vista sees an increase in average high-temperatures during June, moving from a warm 81.5°F (27.5°C) in May to a hot 92.7°F (33.7°C). Weather in June »

Weather in July

July is a torrid summer month in Sierra Vista, California, with an average temperature fluctuating between 100°F (37.8°C) and 65.8°F (18.8°C). July is the warmest month, with the temperature often reaching an average high of 100°F (37.8°C) and an average low of 65.8°F (18.8°C). Weather in July »

Weather in August

The last month of the summer, August, is another very hot month in Sierra Vista, California, with temperature in the range of an average low of 64.9°F (18.3°C) and an average high of 98.2°F (36.8°C). Sierra Vista experiences an average high-temperature of a still torrid 98.2°F (36.8°C) with the onset of August, subtly varied from July's 100°F (37.8°C). Weather in August »

Weather in September

September, the first month of the autumn in Sierra Vista, is still a tropical month, with temperature in the range of an average high of 92.1°F (33.4°C) and an average low of 62.6°F (17°C). A modest decline in the average high-temperature is seen during September, decreasing from a torrid 98.2°F (36.8°C) in August to a hot 92.1°F (33.4°C). Weather in September »

Weather in October

October, like September, in Sierra Vista, California, is another warm autumn month, with temperature in the range of an average high of 79°F (26.1°C) and an average low of 55.4°F (13°C). Sierra Vista in October experiences a subtle temperature decline, with average high-temperatures reducing from a tropical 92.1°F (33.4°C) in September to a warm 79°F (26.1°C). Weather in October »

Weather in November

The last month of the autumn, November, is another comfortable month in Sierra Vista, California, with an average temperature varying between 47.7°F (8.7°C) and 66.2°F (19°C). November brings a decrease in the average high-temperature, falling from October's moderately hot 79°F (26.1°C) to a comfortable 66.2°F (19°C). Weather in November »

Weather in December

December, the first month of the winter in Sierra Vista, is still a mild month, with temperature in the range of an average high of 56.3°F (13.5°C) and an average low of 41.9°F (5.5°C). Sierra Vista reaches its lowest average temperatures in December, measuring 56.3°F (13.5°C) at the peak and 41.9°F (5.5°C) at the lowest. Weather in December »
Updated: Jul 23, 2024
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate

Frequently asked questions

What is the most humid month?

With an average relative humidity of 68%, January is the most humid month.

How many days does it rain?

Throughout the year, in Sierra Vista, there are 51 rainfall days, and 7.56" (192mm) of precipitation is accumulated.

What is the month with the lowest UV index?

January, February, November and December, with an average maximum UV index of 3, are months with the lowest UV index.

What is the rainiest month?

The month with the most rainfall is March, when the rain falls for 8.6 days and typically aggregates up to 1.46" (37mm) of precipitation.

When is Daylight Saving Time (DST)?

On Sunday, March 10. 2024, at 2:00 am, Daylight Saving Time starts, and the time zone changes from PST to PDT. Daylight Saving Time ends Sunday, November 3. 2024, at 2:00 am, and the time zone reverts from PDT to PST.

When are the longest days?

June has the longest days of the year, with an average of 14h and 42min of daylight.

What is the month with the highest UV index?

June through August, with an average maximum UV index of 7, are months with the highest UV index.

What are the warmest months?

July is the warmest month of the year, registering average temperatures as high as 100°F (37.8°C) and as low as 65.8°F (18.8°C).

What is the least humid month?

The least humid month is July, with an average relative humidity of 31%.

What month has the most sunshine?

July has the most sunshine of the year, with an average of 12.2h of sunshine.

What is the driest month?

The month with the least rainfall is August, when the rain falls for 1.3 days and typically collects 0.04" (1mm) of precipitation.

What part of the year is the coldest?

Temperature readings reach their annual highs in December, averaging 56.3°F (13.5°C) and a minimum average of 41.9°F (5.5°C).

What is the month with the shortest days?

The month with the shortest days is December, with an average of 9h and 42min of daylight.

What is the month with the least sunshine?

The month with the least sunshine is December, with an average of 6.2h of sunshine.

Average temperature
Sierra Vista, CA

Average temperature - Sierra Vista, CA

The warmest month (with the highest average high temperature) is July (100°F).
The month with the lowest average high temperature is December (56.3°F).

The month with the highest average low temperature is July (65.8°F).
The coldest month (with the lowest average low temperature) is December (41.9°F).

Average pressure
Sierra Vista, CA

Average pressure - Sierra Vista, CA

The month with the highest atmospheric pressure is January (30.15"Hg).
The month with the lowest atmospheric pressure is June (29.91"Hg).

Average wind speed
Sierra Vista, CA

Average wind speed - Sierra Vista, CA

The windiest month (with the highest average wind speed) is June (7.9mph).
The calmest month (with the lowest average wind speed) is November (4.7mph).

Average humidity
Sierra Vista, CA

Average humidity - Sierra Vista, CA

The month with the highest relative humidity is January (68%).
The month with the lowest relative humidity is July (31%).

Average rainfall
Sierra Vista, CA

Average rainfall - Sierra Vista, CA

The wettest month (with the highest rainfall) is March (1.46").
The driest month (with the least rainfall) is August (0.04").

Average rainfall days
Sierra Vista, CA

Average rainfall days - Sierra Vista, CA

The month with the highest number of rainy days is March (8.6 days).
The month with the least rainy days is June (0.8 days).

Average daylight / Average sunshine
Sierra Vista, CA

Average daylight / Average sunshine - Sierra Vista, CA

The month with the longest days is June (Average daylight: 14h and 42min).
The month with the shortest days is December (Average daylight: 9h and 42min).

The month with the most sunshine is July (Average sunshine: 12h and 12min).
The month with the least sunshine is December (Average sunshine: 6h and 12min).

Average sunshine days
Sierra Vista, CA

Average sunshine days - Sierra Vista, CA

The month with the most sunshine days is June (28.8 days).
The month with the least sunshine days is February (21.5 days).

Average UV index
Sierra Vista, CA

Average UV index - Sierra Vista, CA

The months with the highest UV index are June, July and August (UV index 7).
The months with the lowest UV index are January, February, November and December (UV index 3).

Average cloud cover
Sierra Vista, CA

Average cloud cover - Sierra Vista, CA

The months with the most cloud cover are March and December (Cloud cover 30).
The months with the least cloud cover are July, August and September (Cloud cover 5).

Average visibility
Sierra Vista, CA

Average visibility - Sierra Vista, CA

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

Sierra Vista, California, USA

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