December weather forecastHeydar Didehban, Iran
December weather for Heydar Didehban, Iran: The month with the most rainfall in Heydar Didehban, Iran, is December, when the rain falls for 8.8 days and typically aggregates up to 51mm (2.01") of precipitation. The first month of the winter, December, is also an icy month in Heydar Didehban, Iran, with temperature in the range of an average low of -2.8°C (27°F) and an average high of 5.1°C (41.2°F).
December
Weather in December
The first month of the winter, December, is also an icy month in Heydar Didehban, Iran, with temperature in the range of an average low of -2.8°C (27°F) and an average high of 5.1°C (41.2°F).Temperature
As November transitions into December, Heydar Didehban sees a drop in the average high-temperature, transitioning from a cool 10.4°C (50.7°F) to a wintry 5.1°C (41.2°F). Heydar Didehban's nighttime temperature in December falls to an average of -2.8°C (27°F).Humidity
In December, the average relative humidity in Heydar Didehban is 68%.Rainfall
December is the month with the most rainfall. Rain falls for 8.8 days and accumulates 51mm (2.01") of precipitation.Snowfall
Months with snowfall are January through April, November and December. In Heydar Didehban, in December, during 5.2 snowfall days, 154mm (6.06") of snow is typically accumulated. Throughout the year, in Heydar Didehban, there are 29.2 snowfall days, and 696mm (27.4") of snow is accumulated.Daylight
With an average of 9h and 42min of daylight, December has the shortest days of the year.On the first day of the month, sunrise is at 07:14 and sunset at 17:07. On the last day of December, in Heydar Didehban, sunrise is at 07:32 and sunset at 17:17 +0330.
Sunshine
In December, the average sunshine is 6.8h.UV index
The months with the lowest UV index in Heydar Didehban are January through March, November and December, with an average maximum UV index of 2. A UV Index estimate of 2, and below, represents a minimal health vulnerability from exposure to the Sun's UV rays for the ordinary person.Note: An average UV index of 2 in December transforms into this advice:
Protection from prolonged sun exposure is necessary for babies, children, and individuals with sensitive skin. The mid-day Sun emits the most powerful UV radiation, so seek shade and minimize exposure. Your best bet for sun defense on the face, eyes, and neck is a hat with a wide brim. Be advised! The UV radiation from the Sun can be almost doubled due to the reflective properties of snow.
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Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature in December
Heydar Didehban, Iran
- Average high temperature in December: 5.1°C
The warmest month (with the highest average high temperature) is July (32.8°C).
The month with the lowest average high temperature is January (1.9°C).
- Average low temperature in December: -2.8°C
The month with the highest average low temperature is July (18°C).
The coldest month (with the lowest average low temperature) is January (-5.6°C).
Average pressure in December
Heydar Didehban, Iran
- Average pressure in December: 1022mbar
The month with the highest atmospheric pressure is December (1022mbar).
The month with the lowest atmospheric pressure is July (1006.2mbar).
Average wind speed in December
Heydar Didehban, Iran
- Average wind speed in December: 7.3km/h
The windiest month (with the highest average wind speed) is May (12km/h).
The calmest month (with the lowest average wind speed) is November (7.2km/h).
Average humidity in December
Heydar Didehban, Iran
- Average humidity in December: 68%
The month with the highest relative humidity is January (76%).
The months with the lowest relative humidity are July and August (24%).
Average rainfall in December
Heydar Didehban, Iran
- Average rainfall in December: 51mm
The wettest month (with the highest rainfall) is December (51mm).
The driest month (with the least rainfall) is August (0mm).
Average rainfall days in December
Heydar Didehban, Iran
- Average rainfall days in December: 8.8 days
The month with the highest number of rainy days is March (13.6 days).
The month with the least rainy days is August (0.3 days).
Average snowfall in December
Heydar Didehban, Iran
- Average snowfall in December: 154mm
The months with the highest snowfall are January and February (225mm).
The months with the least snowfall are May, June, July, August, September and October (0mm).
Average snowfall days in December
Heydar Didehban, Iran
- Average snowfall days in December: 5.2 days
The month with the highest number of snowfall days is January (10.3 days).
The months with the least snowfall days are May, June, July, August, September and October (0 days).
Average daylight in December /
Average sunshine in December
Heydar Didehban, Iran
- Average daylight in December: 9h and 42min
The month with the longest days is June (Average daylight: 14h and 36min).
The month with the shortest days is December (Average daylight: 9h and 42min).
- Average sunshine in December: 6h and 48min
The month with the most sunshine is August (Average sunshine: 12h and 6min).
The month with the least sunshine is January (Average sunshine: 6h and 36min).
Average sunshine days in December
Heydar Didehban, Iran
- Average sunshine days in December: 19.6 days
The month with the most sunshine days is August (30.2 days).
The month with the least sunshine days is March (14.3 days).
Average UV index in December
Heydar Didehban, Iran
- Average UV index in December: 2
The months with the highest UV index are June and July (UV index 7).
The months with the lowest UV index are January, February, March, November and December (UV index 2).
Average cloud cover in December
Heydar Didehban, Iran
- Average cloud cover in December: 27
The months with the most cloud cover are January, February and March (Cloud cover 30).
The months with the least cloud cover are August and September (Cloud cover 3).
Average visibility in December
Heydar Didehban, Iran
- Average visibility in December: 9km
The months with the highest visibility are April, May, June, July, August, September, October and November (10km).
The months with the lowest visibility are January, February, March and December (9km).
