January weather forecast and climate
Gridley, CA

Weather in January

January is a mild winter month in Gridley, California, with temperature in the range of an average low of 41.9°F (5.5°C) and an average high of 56.8°F (13.8°C).

Temperature

In January, the average high-temperature is essentially the same as in December - a mild 56.8°F (13.8°C). The average low-temperature, in January, is 41.9°F (5.5°C).

Humidity

The average relative humidity in Gridley is 69%.

Rainfall

In Gridley, during January, the rain falls for 10.2 days and regularly aggregates up to 3.03" (77mm) of precipitation. Throughout the year, in Gridley, there are 81.5 rainfall days, and 21.34" (542mm) of precipitation is accumulated.

Snowfall

January and February are months with snowfall in Gridley. The month with the most snowfall in Gridley, California, is January when 0.4" (10.2mm) of snow is typically aggregated.

Daylight

In January, the average length of the day is 9.8h.

Sunshine

In Gridley, the average sunshine is 6h.

UV index

Months with the lowest UV index in Gridley are January, February, November and December, with an average maximum UV index of 3. A UV Index estimate of 3 to 5 represents a medium health hazard from the exposure to the Sun's UV radiation for the ordinary person.
Note: In January, the average maximum UV index of 3 translate into the following recommendations:
Take precautions - Protection against sunburn is recommended. The Sun's most intense and consequently most harmful UV radiation during midday hours should be decreased by minimizing exposure and seeking shade. 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. Beware! The strength of the UV rays is increased nearly double-fold by the reflection of the snow.
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FAQ

What is the temperature in January in Gridley?

In January, in Gridley, the average high-temperature is 56.8°F (13.8°C), and the average low-temperature is 41.9°F (5.5°C).

What is the average humidity in January in Gridley?

In Gridley, the average relative humidity in January is 69%.

How many days does it rain in January in Gridley?

In Gridley, in January, during 10.2 rainfall days, 3.03" (77mm) of precipitation is typically accumulated.

When does it start to snow in Gridley?

January is the first month it typically snows. Throughout January, Gridley receives 0.4" (10.2mm) of snow.

When does it snow the most in Gridley?

January is the month with the most snowfall in Gridley, with 0.4" (10.2mm) of accumulated snow.

How many hours of daylight does Gridley have in January?

In January, the average length of the day in Gridley, California, is 9.8h.

How many hours of sunshine does Gridley have in January?

In Gridley, California, the average sunshine in January is 6h.

What are the months with the lowest UV index in Gridley?

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

What is the UV index reading in January in Gridley?

In January, the average daily maximum UV index is 3. A UV Index reading of 3 to 5 represents a moderate vulnerability from the exposure to the Sun's UV rays.

Average temperature in January
Gridley, CA

Average temperature in January - Gridley, CA
  • Average high temperature in January: 56.8°F

The warmest month (with the highest average high temperature) is July (96.4°F).
The month with the lowest average high temperature is December (54.5°F).

  • Average low temperature in January: 41.9°F

The month with the highest average low temperature is July (63.1°F).
The coldest month (with the lowest average low temperature) is December (41°F).

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Average pressure in January
Gridley, CA

Average pressure in January - Gridley, CA
  • Average pressure in January: 30.16"

The month with the highest atmospheric pressure is January (30.16").
The month with the lowest atmospheric pressure is June (29.9").

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Average wind speed in January
Gridley, CA

Average wind speed in January - Gridley, CA
  • Average wind speed in January: 5.1mph

The windiest month (with the highest average wind speed) is March (6.1mph).
The calmest month (with the lowest average wind speed) is September (4.7mph).

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Average humidity in January
Gridley, CA

Average humidity in January - Gridley, CA
  • Average humidity in January: 69%

The month with the highest relative humidity is March (72%).
The month with the lowest relative humidity is July (35%).

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Average rainfall in January
Gridley, CA

Average rainfall in January - Gridley, CA
  • Average rainfall in January: 3.03"

The wettest months (with the highest rainfall) are February and March (3.98").
The driest month (with the least rainfall) is July (0.04").

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Average rainfall days in January
Gridley, CA

Average rainfall days in January - Gridley, CA
  • Average rainfall days in January: 10.2 days

The month with the highest number of rainy days is March (14.3 days).
The month with the least rainy days is July (1.4 days).

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Average snowfall in January
Gridley, CA

Average snowfall in January - Gridley, CA
  • Average snowfall in January: 0.4"

The month with the highest snowfall is January (0.4").
Months with the least snowfall are March, April, May, June, July, August, September, October, November and December (0").

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Average snowfall days in January
Gridley, CA

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

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

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Average daylight in January /
Average sunshine in January
Gridley, CA

Average daylight in January / Average sunshine in January - Gridley, CA
  • Average daylight in January: 9.8h

The month with the longest days is June (Average daylight: 14.9h).
The month with the shortest days is December (Average daylight: 9.4h).

  • Average sunshine in January: 6h

The month with the most sunshine is July (Average sunshine: 12.2h).
The month with the least sunshine is December (Average sunshine: 5.9h).

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Average sunshine days in January
Gridley, CA

Average sunshine days in January - Gridley, CA
  • Average sunshine days in January: 20 days

The month with the most sunshine days is July (29.1 days).
The month with the least sunshine days is March (16 days).

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Average UV index in January
Gridley, CA

Average UV index in January - Gridley, CA
  • Average UV index in January: 3

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

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Average cloud cover in January
Gridley, CA

Average cloud cover in January - Gridley, CA
  • Average cloud cover in January: 33

The month with the most cloud cover is March (Cloud cover 37).
The month with the least cloud cover is July (Cloud cover 4).

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Average visibility in January
Gridley, CA

Average visibility in January - Gridley, 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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