December
Weather in December
Temperature
Setting in of December comes with a decrease in the average high-temperature, moving from a comfortable 17.7°C (63.9°F) in November to a cool 10.8°C (51.4°F). Throughout the month of December, Semnan witnesses an average low-temperature of 1.2°C (34.2°F).Humidity
In December, the average relative humidity is 60%.Rainfall
In December, the rain falls for 5.1 days. Throughout December, 20mm (0.79") of precipitation is accumulated. In Semnan, during the entire year, the rain falls for 48.7 days and collects up to 140mm (5.51") of precipitation.Snowfall
Months with snowfall are January through March and December. December is the first month it typically snows. Throughout December, there are 1.1 snowfall days. In Semnan, Iran, during the entire year, snow falls for 6.8 days.Daylight
December has the shortest days of the year, with an average of 9h and 48min of daylight.On the first day of the month, sunrise is at 06:47 and sunset at 16:43. On the last day of December, sunrise is at 07:05 and sunset at 16:53 +0330.
Sunshine
In Semnan, the average sunshine in December is 5.7h.Published by: Weather Atlas | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
What are December temperatures?
What is the average humidity in December?
How much does it rain in December?
When does it start to snow?
What is the month with the shortest days?
How many hours of daylight does Semnan have in December?
When are sunrise and sunset in December?
How long on average sun shines in December?
Average temperature in December
Semnan, Iran
- Average high temperature in December: 10.8°C
The warmest month (with the highest average high temperature) is July (37.8°C).
The month with the lowest average high temperature is January (8.4°C).
- Average low temperature in December: 1.2°C
The month with the highest average low temperature is July (24.9°C).
The coldest month (with the lowest average low temperature) is January (-1°C).
Average humidity in December
Semnan, Iran
- Average humidity in December: 60%
The month with the highest relative humidity is January (63%).
The months with the lowest relative humidity are June and July (28%).
Average rainfall in December
Semnan, Iran
- Average rainfall in December: 19.5mm
The wettest month (with the highest rainfall) is March (22.7mm).
The driest month (with the least rainfall) is September (1.4mm).
Average rainfall days in December
Semnan, Iran
- Average rainfall days in December: 5.1 days
The month with the highest number of rainy days is March (7.2 days).
The month with the least rainy days is September (0.8 days).
Average snowfall days in December
Semnan, Iran
- Average snowfall days in December: 1.1 days
The month with the highest number of snowfall days is January (3.3 days).
The months with the least snowfall days are April, May, June, July, August, September, October and November (0 days).
Average daylight in December /
Average sunshine in December
Semnan, Iran
- Average daylight in December: 9h and 5min
The month with the longest days is June (Average daylight: 14h and 30min).
The month with the shortest days is December (Average daylight: 9h and 48min).
- Average sunshine in December: 5h and 4min
The month with the most sunshine is June (Average sunshine: 11h and 18min).
The month with the least sunshine is January (Average sunshine: 5h and 30min).
