January weather forecast and climate
Glendora, CA

The beautiful city of Glendora, California, surrounded by the vast mountain ranges
The beautiful city of Glendora, California, surrounded by the vast mountain ranges

Weather in January

January, the same as December, is another comfortable winter month in Glendora, California, with average temperature fluctuating between 64°F (17.8°C) and 46.9°F (8.3°C).

Temperature

In Glendora, California, the average high-temperature is relatively the same as in December - a still enjoyable 64°F (17.8°C). In January, in Glendora, the average low-temperature is 46.9°F (8.3°C).

Humidity

In Glendora, the average relative humidity is 50%.

Rainfall

In Glendora, during January, the rain falls for 5.4 days and regularly aggregates up to 1.3" (33mm) of precipitation. Throughout the year, in Glendora, there are 44.9 rainfall days, and 7.76" (197mm) of precipitation is accumulated.

Snowfall

January, March through December are months without snowfall in Glendora.

Daylight

The average length of the day is 10.2h.

Sunshine

The average sunshine in Glendora, California, is 7h.

UV index

The average daily maximum UV index in January is 4. A UV Index value of 3 to 5 symbolizes a medium vulnerability from unsafe exposure to the UV radiation for the average person.
Note: The daily maximum UV index of 4 in January interpret into the following advice:
Take precautions - Protection against sunburn is recommended. The solar radiation is most powerful near the mid-day, so the exposure to the direct Sun should be reduced accordingly. A wide-brim hat offers excellent sun protection for eyes, ears, face, and neck. Sunglasses with UVA and UVB protection significantly reduce eye damage from sun exposure. Tightly woven, loose-fitting clothes provide additional protection from the Sun.
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FAQ

What is the temperature in January in Glendora?

In Glendora, California, in January, the average high-temperature is 64°F (17.8°C), and the average low-temperature is 46.9°F (8.3°C).

What is the average humidity in January in Glendora?

In January, the average relative humidity in Glendora, California, is 50%.

How many days does it rain in January in Glendora?

In Glendora, in January, during 5.4 rainfall days, 1.3" (33mm) of precipitation is typically accumulated.

Does it snow in Glendora in January?

In Glendora, California, in January, it doesn't snow. In February, it regularly snows.

When it does not snow in Glendora?

January, March through December are months without snowfall in Glendora.

How many hours of daylight does Glendora have in January?

In January, the average length of the day is 10.2h.

How long on average sun shines in January in Glendora?

In January, the average sunshine is 7h.

How high is the UV index in January in Glendora?

In Glendora, the average daily maximum UV index in January is 4. A UV Index of 3 to 5 symbolizes a moderate health threat from unprotected exposure to the UV radiation.

Average temperature in January
Glendora, CA

Average temperature in January - Glendora, CA
  • Average high temperature in January: 64°F

The warmest month (with the highest average high temperature) is August (88.7°F).
The month with the lowest average high temperature is December (61.5°F).

  • Average low temperature in January: 46.9°F

The month with the highest average low temperature is August (65.7°F).
The coldest month (with the lowest average low temperature) is December (45.5°F).

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Average pressure in January
Glendora, CA

Average pressure in January - Glendora, CA
  • Average pressure in January: 30.11"

The month with the highest atmospheric pressure is January (30.11").
The month with the lowest atmospheric pressure is June (29.87").

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Average wind speed in January
Glendora, CA

Average wind speed in January - Glendora, CA
  • Average wind speed in January: 5.3mph

The windiest months (with the highest average wind speed) are April and May (5.8mph).
The calmest month (with the lowest average wind speed) is September (4.4mph).

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Average humidity in January
Glendora, CA

Average humidity in January - Glendora, CA
  • Average humidity in January: 50%

Months with the highest relative humidity are March and May (55%).
Months with the lowest relative humidity are August and November (45%).

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Average rainfall in January
Glendora, CA

Average rainfall in January - Glendora, CA
  • Average rainfall in January: 1.3"

The wettest month (with the highest rainfall) is February (1.73").
The driest month (with the least rainfall) is June (0.04").

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Average rainfall days in January
Glendora, CA

Average rainfall days in January - Glendora, CA
  • Average rainfall days in January: 5.4 days

The month with the highest number of rainy days is March (7.2 days).
The month with the least rainy days is June (1.1 days).

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Average snowfall days in January
Glendora, CA

Average snowfall days in January - Glendora, CA
  • Average snowfall days in January: 0 days

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 in January /
Average sunshine in January
Glendora, CA

Average daylight in January / Average sunshine in January - Glendora, CA
  • Average daylight in January: 10.2h

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

  • Average sunshine in January: 7h

Months with the most sunshine are June and July (Average sunshine: 12.1h).
The month with the least sunshine is February (Average sunshine: 6.9h).

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Average sunshine days in January
Glendora, CA

Average sunshine days in January - Glendora, CA
  • Average sunshine days in January: 24.8 days

The month with the most sunshine days is June (28.6 days).
The month with the least sunshine days is February (22.6 days).

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Average UV index in January
Glendora, CA

Average UV index in January - Glendora, CA
  • Average UV index in January: 4

Months with the highest UV index are July and August (UV index 7).
The month with the lowest UV index is December (UV index 3).

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Average cloud cover in January
Glendora, CA

Average cloud cover in January - Glendora, CA
  • Average cloud cover in January: 19

Months with the most cloud cover are March and December (Cloud cover 21).
The month with the least cloud cover is August (Cloud cover 4).

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Average visibility in January
Glendora, CA

Average visibility in January - Glendora, CA
  • Average visibility in January: 6mi

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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