Contents
- Weather in January
- Frequently asked questions
- Average temperature in January
- Average pressure in January
- Average wind speed in January
- Average humidity in January
- Average rainfall in January
- Average rainfall days in January
- Average snowfall days in January
- Average daylight in January
- Average sunshine in January
- Average sunshine days in January
- Average UV index in January
- Average cloud cover in January
- Average visibility in January
Weather in January
Temperature
The arrival of January coincides with an average high-temperature of a still comfortable 64°F (17.8°C), indicating a minimal shift from December's 61.5°F (16.4°C). Glendora anticipates an average minimum temperature of 46.9°F (8.3°C) in the month of January.Humidity
In January, the average relative humidity in Glendora, California, is 50%.Rainfall
In Glendora, during January, the rain falls for 5.4 days and regularly aggregates up to 1.3" (33mm) of precipitation. In Glendora, during the entire year, the rain falls for 44.9 days and collects up to 7.76" (197mm) of precipitation.Snowfall
January, March through December are months without snowfall.Daylight
In January, the average length of the day in Glendora is 10h and 11min.On the first day of January in Glendora, sunrise is at 6:57 am and sunset at 4:52 pm. On the last day of the month, sunrise is at 6:49 am and sunset at 5:20 pm PST.
Sunshine
The average sunshine in January in Glendora is 7h.UV index
In January, the average daily maximum UV index in Glendora is 4. A UV Index value of 3 to 5 symbolizes a moderate health risk from unsafe exposure to UV radiation for the ordinary person.Note: In January, the maximum UV index of 4 transforms into these recommendations:
Heed the precautions - It is counselled to guard against solar damage. The most potent solar radiation is around mid-day, so one should minimize exposure to direct sunlight during this period. Protect your eyes, ears, face, and neck from the Sun by wearing a wide-brimmed hat.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
What are the temperatures in Glendora in January?
What is the average humidity in January in Glendora?
How many days does it rain in January in Glendora?
When it does not snow in Glendora?
Does it snow in Glendora in January?
How many hours of daylight does Glendora have in January?
When are sunrise and sunset in January in Glendora?
How many hours of sunshine does Glendora have in January?
How high is the UV index in January in Glendora?
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).
Average pressure in January
Glendora, CA
- Average pressure in January: 30.11"Hg
The month with the highest atmospheric pressure is January (30.11"Hg).
The month with the lowest atmospheric pressure is June (29.87"Hg).
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).
Average humidity in January
Glendora, CA
- Average humidity in January: 50%
The months with the highest relative humidity are March and May (55%).
The months with the lowest relative humidity are August and November (45%).
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").
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).
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).
The months with the least snowfall days are January, March, April, May, June, July, August, September, October, November and December (0 days).
Average daylight in January /
Average sunshine in January
Glendora, CA
- Average daylight in January: 10h and 1min
The month with the longest days is June (Average daylight: 14h and 24min).
The month with the shortest days is December (Average daylight: 9h and 54min).
- Average sunshine in January: 7h and 0min
The months with the most sunshine are June and July (Average sunshine: 12h and 6min).
The month with the least sunshine is February (Average sunshine: 6h and 54min).
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).
Average UV index in January
Glendora, CA
- Average UV index in January: 4
The 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).
Average cloud cover in January
Glendora, CA
- Average cloud cover in January: 19
The 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).
Average visibility in January
Glendora, CA
- Average visibility in January: 6mi
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).
Glendora, California, USA
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