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
In January, Winnetka notes an average high-temperature of a still enjoyable 63.5°F (17.5°C), hardly different from the preceding month. Throughout January, Winnetka witnesses a consistent average low-temperature of 47.7°F (8.7°C).Humidity
The average relative humidity in January in Winnetka, California, is 52%.Rainfall
In January, the rain falls for 4.5 days. Throughout January, 1.14" (29mm) of precipitation is accumulated. In Winnetka, during the entire year, the rain falls for 42.7 days and collects up to 6.46" (164mm) of precipitation.Snowfall
January through November are months without snowfall.Daylight
In Winnetka, the average length of the day in January is 10h and 11min.On the first day of January in Winnetka, sunrise is at 7:00 am and sunset at 4:55 pm. On the last day of the month, sunrise is at 6:52 am and sunset at 5:23 pm PST.
Sunshine
January, February and December, with an average of 6.8h of sunshine, are months with the least sunshine.UV index
The average daily maximum UV index in January in Winnetka is 4. A UV Index reading of 3 to 5 represents a medium vulnerability from exposure to the Sun's UV radiation for ordinary individuals.Note: The maximum daily UV index of 4 in January interprets into the following recommendations:
Guard yourself - Precautionary measures against sun damage are advocated. The Sun's most harmful UV rays are emitted around midday; avoid staying outdoors for long during this time. Sun-protective clothing, a long-sleeved shirt and pants, a wide-brimmed hat, and UVA and UVB-blocking sunglasses are particularly helpful in blocking UV radiation's harmful effects.
Frequently asked questions
What are January temperatures in Winnetka?
What is the average humidity in January in Winnetka?
How much does it rain in Winnetka in January?
When it does not snow in Winnetka?
Does it snow in Winnetka in January?
How many hours of daylight does Winnetka have in January?
When are sunrise and sunset in January in Winnetka?
What are the months with the least sunshine in Winnetka?
How many hours of sunshine does Winnetka have in January?
What is the UV index intensity in January in Winnetka?
Average temperature in January
Winnetka, CA
- Average high temperature in January: 63.5°F
The warmest month (with the highest average high temperature) is August (85.6°F).
The month with the lowest average high temperature is December (61.9°F).
- Average low temperature in January: 47.7°F
The month with the highest average low temperature is August (64.8°F).
The coldest month (with the lowest average low temperature) is December (46.9°F).
Average pressure in January
Winnetka, 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 (29.89"Hg).
Average wind speed in January
Winnetka, CA
- Average wind speed in January: 6.1mph
The windiest months (with the highest average wind speed) are January and December (6.1mph).
The calmest month (with the lowest average wind speed) is September (4.5mph).
Average humidity in January
Winnetka, CA
- Average humidity in January: 52%
The month with the highest relative humidity is June (59%).
The month with the lowest relative humidity is November (47%).
Average rainfall in January
Winnetka, CA
- Average rainfall in January: 1.14"
The wettest month (with the highest rainfall) is February (1.22").
The driest month (with the least rainfall) is June (0.04").
Average rainfall days in January
Winnetka, CA
- Average rainfall days in January: 4.5 days
The month with the highest number of rainy days is March (6.5 days).
The month with the least rainy days is June (1.4 days).
Average snowfall days in January
Winnetka, CA
- Average snowfall days in January: 0 days
The month with the highest number of snowfall days is December (0.1 days).
The months with the least snowfall days are January, February, March, April, May, June, July, August, September, October and November (0 days).
Average daylight in January /
Average sunshine in January
Winnetka, 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: 6h and 5min
The months with the most sunshine are June and July (Average sunshine: 12h and 6min).
The months with the least sunshine are January, February and December (Average sunshine: 6h and 48min).
Average sunshine days in January
Winnetka, CA
- Average sunshine days in January: 25.3 days
The months with the most sunshine days are August and October (27.3 days).
The month with the least sunshine days is February (22 days).
Average UV index in January
Winnetka, CA
- Average UV index in January: 4
The months with the highest UV index are June, July, August and September (UV index 6).
The month with the lowest UV index is December (UV index 3).
Average cloud cover in January
Winnetka, CA
- Average cloud cover in January: 21
The month with the most cloud cover is March (Cloud cover 22).
The month with the least cloud cover is August (Cloud cover 4).
Average visibility in January
Winnetka, 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).
Winnetka, California, USA
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