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 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
With January's arrival, Alviso notes an average high-temperature of a still refreshing 57.7°F (14.3°C), closely following the trend of the preceding month. An average nighttime temperature of 42.6°F (5.9°C) is witnessed throughout January.Humidity
In Alviso, the average relative humidity in January is 72%.Rainfall
In January, the rain falls for 6.5 days. Throughout January, 0.63" (16mm) of precipitation is accumulated. In Alviso, during the entire year, the rain falls for 52.8 days and collects up to 4.06" (103mm) of precipitation.Daylight
In January, the average length of the day is 9h and 56min.On the first day of January, sunrise is at 7:22 am and sunset at 5:00 pm. On the last day of the month, sunrise is at 7:11 am and sunset at 5:30 pm PST.
Sunshine
In Alviso, the average sunshine in January is 6.3h.UV index
The months with the lowest UV index are January, February, November and December, with an average maximum UV index of 3. A UV Index reading of 3 to 5 represents a moderate threat to health from exposure to the Sun's UV radiation for the ordinary person.Note: In January, an average UV index of 3 transforms into the following instructions:
Act with care - The suggestion to avoid sunburn is emphasized. The midday Sun can be dangerous due to its intense radiation; always find shade and reduce exposure. Wearing sunglasses with both UVA and UVB protection effectively reduces sun-induced eye damage.
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Data Sources | Weather Forecasting & Climate
Frequently asked questions
What is the usual temperature for Alviso in January?
What is the average humidity in January in Alviso?
How much does it rain in January?
What is the average length of the day in January?
What time are sunrise and sunset in January?
How long on average sun shines in January?
When is the lowest UV index?
How high is the UV index in January?
Average temperature in January
Alviso, CA
- Average high temperature in January: 57.7°F
The warmest month (with the highest average high temperature) is July (83.5°F).
The month with the lowest average high temperature is December (56.3°F).
- Average low temperature in January: 42.6°F
The month with the highest average low temperature is August (56.8°F).
The coldest months (with the lowest average low temperature) are January and December (42.6°F).
Average pressure in January
Alviso, CA
- Average pressure in January: 30.14"Hg
The month with the highest atmospheric pressure is January (30.14"Hg).
The months with the lowest atmospheric pressure are June, August and September (29.92"Hg).
Average wind speed in January
Alviso, CA
- Average wind speed in January: 4.5mph
The windiest month (with the highest average wind speed) is May (5.8mph).
The calmest months (with the lowest average wind speed) are October and November (4.3mph).
Average humidity in January
Alviso, CA
- Average humidity in January: 72%
The month with the highest relative humidity is March (73%).
The month with the lowest relative humidity is July (58%).
Average rainfall in January
Alviso, CA
- Average rainfall in January: 0.63"
The wettest month (with the highest rainfall) is March (0.83").
The driest months (with the least rainfall) are June, July and August (0.04").
Average rainfall days in January
Alviso, CA
- Average rainfall days in January: 6.5 days
The month with the highest number of rainy days is March (9.9 days).
The month with the least rainy days is August (0.4 days).
Average daylight in January /
Average sunshine in January
Alviso, CA
- Average daylight in January: 9h and 5min
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 36min).
- Average sunshine in January: 6h and 2min
The month with the most sunshine is July (Average sunshine: 12h and 6min).
The month with the least sunshine is December (Average sunshine: 6h and 0min).
Average sunshine days in January
Alviso, CA
- Average sunshine days in January: 23.3 days
The month with the most sunshine days is August (29.6 days).
The month with the least sunshine days is March (19.5 days).
Average UV index in January
Alviso, CA
- Average UV index in January: 3
The months with the highest UV index are June, July and August (UV index 6).
The months with the lowest UV index are January, February, November and December (UV index 3).
Average cloud cover in January
Alviso, CA
- Average cloud cover in January: 31
The month with the most cloud cover is March (Cloud cover 35).
The month with the least cloud cover is July (Cloud cover 5).
Average visibility in January
Alviso, 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).
Alviso, California, USA
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