Contents
- Weather in December
- Frequently asked questions
- Average temperature in December
- Average pressure in December
- Average wind speed in December
- Average humidity in December
- Average rainfall in December
- Average rainfall days in December
- Average daylight in December
- Average sunshine in December
- Average sunshine days in December
- Average UV index in December
- Average cloud cover in December
- Average visibility in December
Weather in December
Temperature
Lemon Grove's coldest weather arrives in December, when temperatures average a high of 64.4°F (18°C) and a low of 49.3°F (9.6°C).Humidity
The average relative humidity in December in Lemon Grove is 59%.Rainfall
In Lemon Grove, during December, the rain falls for 3.5 days and regularly aggregates up to 0.51" (13mm) of precipitation. In Lemon Grove, California, during the entire year, the rain falls for 33 days and collects up to 2.52" (64mm) of precipitation.Daylight
The month with the shortest days is December, with an average of 10h and 0min of daylight.On the first day of the month, sunrise is at 6:33 am and sunset at 4:41 pm. On the last day of December, sunrise is at 6:50 am and sunset at 4:52 pm PST.
Sunshine
February and December, with an average of 6.7h of sunshine, are months with the least sunshine in Lemon Grove.UV index
The months with the lowest UV index are January, February, November and December, with an average maximum UV index of 4. A UV Index estimate of 3 to 5 represents a medium vulnerability from unprotected exposure to Sun's UV rays for the ordinary person.Note: In December, the average maximum UV index of 4 translates into the following recommendations:
Undertake protective steps - Preventing sun damage is advised. The Sun's most harmful UV rays are emitted around midday; avoid staying outdoors for long during this time. Combat UV radiation's detrimental effects with sun-safe clothing and UV-blocking eyewear.
Frequently asked questions
What part of the year is the coldest in Lemon Grove?
What is the average December temperature in Lemon Grove?
What is the average humidity in December in Lemon Grove?
How many days does it rain in December in Lemon Grove?
What is the month with the shortest days in Lemon Grove?
What is the average length of the day in December in Lemon Grove?
When is the sunrise / sunset in December in Lemon Grove?
What is the month with the least sunshine in Lemon Grove?
How long on average sun shines in December in Lemon Grove?
What is the month with the lowest UV index in Lemon Grove?
What is the UV index reading in December in Lemon Grove?
Average temperature in December
Lemon Grove, CA
- Average high temperature in December: 64.4°F
The warmest month (with the highest average high temperature) is August (82.9°F).
The month with the lowest average high temperature is December (64.4°F).
- Average low temperature in December: 49.3°F
The month with the highest average low temperature is August (65.8°F).
The coldest month (with the lowest average low temperature) is February (48.7°F).
Average pressure in December
Lemon Grove, CA
- Average pressure in December: 30.06"Hg
The month with the highest atmospheric pressure is January (30.09"Hg).
The month with the lowest atmospheric pressure is June (29.87"Hg).
Average wind speed in December
Lemon Grove, CA
- Average wind speed in December: 5mph
The windiest month (with the highest average wind speed) is April (5.6mph).
The calmest month (with the lowest average wind speed) is October (4.5mph).
Average humidity in December
Lemon Grove, CA
- Average humidity in December: 59%
The month with the highest relative humidity is May (67%).
The month with the lowest relative humidity is November (54%).
Average rainfall in December
Lemon Grove, CA
- Average rainfall in December: 0.51"
The wettest month (with the highest rainfall) is February (0.55").
The driest months (with the least rainfall) are June, July and October (0.04").
Average rainfall days in December
Lemon Grove, CA
- Average rainfall days in December: 3.5 days
The month with the highest number of rainy days is March (5.3 days).
The month with the least rainy days is June (0.8 days).
Average daylight in December /
Average sunshine in December
Lemon Grove, CA
- Average daylight in December: 10h and 0min
The month with the longest days is June (Average daylight: 14h and 18min).
The month with the shortest days is December (Average daylight: 10h and 0min).
- Average sunshine in December: 6h and 4min
The month with the most sunshine is July (Average sunshine: 12h and 6min).
The months with the least sunshine are February and December (Average sunshine: 6h and 42min).
Average sunshine days in December
Lemon Grove, CA
- Average sunshine days in December: 26.7 days
The month with the most sunshine days is October (28.9 days).
The month with the least sunshine days is February (23.4 days).
Average UV index in December
Lemon Grove, CA
- Average UV index in December: 4
The months with the highest UV index are June, July, August and September (UV index 6).
The months with the lowest UV index are January, February, November and December (UV index 4).
Average cloud cover in December
Lemon Grove, CA
- Average cloud cover in December: 24
The months with the most cloud cover are March and December (Cloud cover 24).
The month with the least cloud cover is August (Cloud cover 7).
Average visibility in December
Lemon Grove, CA
- Average visibility in December: 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).
Lemon Grove, California, USA
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