December weather forecastSis, Iran
December
Weather in December
December, the first month of the winter in Sis, is also an icy month, with an average temperature ranging between max 3.2°C (37.8°F) and min -3.5°C (25.7°F).Temperature
As November transitions into December, Sis sees a drop in the average high-temperature, transitioning from a chilly 8.5°C (47.3°F) to a wintry 3.2°C (37.8°F). December's nights observe an average temperature of -3.5°C (25.7°F).Humidity
In Sis, the average relative humidity in December is 71%.Rainfall
In Sis, in December, during 8 rainfall days, 25mm (0.98") of precipitation is typically accumulated. In Sis, during the entire year, the rain falls for 120.5 days and collects up to 352mm (13.86") of precipitation.Snowfall
Months with snowfall are January through April, October through December. In December, it is snowing for 6.4 days. Throughout December, 94mm (3.7") of snow is accumulated. Throughout the year, there are 33.8 snowfall days, and 550mm (21.65") of snow is accumulated.Daylight
The month with the shortest days is December, with an average of 9h and 36min of daylight.On the first day of the month, sunrise is at 07:24 and sunset at 17:07. On the last day of December, sunrise is at 07:43 and sunset at 17:16 +0330.
Sunshine
January and December, with an average of 6.5h of sunshine, are months with the least sunshine.UV index
January through March, November and December, with an average maximum UV index of 2, are months with the lowest UV index. A UV Index reading of 2, and below, represents a low health risk from exposure to the Sun's UV rays for the average person.Note: During December, 2 as the daily maximum UV index converts into the following advice:
Most people face no serious problems with extended sun exposure, but those with fair skin, infants, and children always need protection. Being exposed to the midday Sun can have harmful effects due to strong UV radiation; always take precautions. Protect your eyes, ears, face, and neck from the Sun by wearing a wide-brimmed hat. Watch out! The Sun's UV radiation can be nearly magnified twofold due to snow reflection.
Published by: Weather Atlas | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature in December
Sis, Iran
- Average high temperature in December: 3.2°C
The warmest month (with the highest average high temperature) is July (29.6°C).
The month with the lowest average high temperature is January (0.3°C).
- Average low temperature in December: -3.5°C
The month with the highest average low temperature is July (17.8°C).
The coldest month (with the lowest average low temperature) is January (-7°C).
Average pressure in December
Sis, Iran
- Average pressure in December: 1022.4mbar
The month with the highest atmospheric pressure is December (1022.4mbar).
The month with the lowest atmospheric pressure is July (1008.8mbar).
Average wind speed in December
Sis, Iran
- Average wind speed in December: 6.8km/h
The windiest month (with the highest average wind speed) is July (11.8km/h).
The calmest month (with the lowest average wind speed) is December (6.8km/h).
Average humidity in December
Sis, Iran
- Average humidity in December: 71%
The month with the highest relative humidity is January (79%).
The month with the lowest relative humidity is August (42%).
Average rainfall in December
Sis, Iran
- Average rainfall in December: 25mm
The wettest month (with the highest rainfall) is April (52mm).
The driest month (with the least rainfall) is August (11mm).
Average rainfall days in December
Sis, Iran
- Average rainfall days in December: 8 days
The month with the highest number of rainy days is April (17.3 days).
The month with the least rainy days is August (4.7 days).
Average snowfall in December
Sis, Iran
- Average snowfall in December: 94mm
The month with the highest snowfall is January (184mm).
The months with the least snowfall are May, June, July, August and September (0mm).
Average snowfall days in December
Sis, Iran
- Average snowfall days in December: 6.4 days
The month with the highest number of snowfall days is January (10.5 days).
The months with the least snowfall days are May, June, July, August and September (0 days).
Average daylight in December /
Average sunshine in December
Sis, Iran
- Average daylight in December: 9h and 36min
The month with the longest days is June (Average daylight: 14h and 48min).
The month with the shortest days is December (Average daylight: 9h and 36min).
- Average sunshine in December: 6h and 30min
The month with the most sunshine is August (Average sunshine: 12h and 12min).
The months with the least sunshine are January and December (Average sunshine: 6h and 30min).
Average sunshine days in December
Sis, Iran
- Average sunshine days in December: 18.8 days
The month with the most sunshine days is August (22.7 days).
The month with the least sunshine days is May (8.5 days).
Average UV index in December
Sis, Iran
- Average UV index in December: 2
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, March, November and December (UV index 2).
Average cloud cover in December
Sis, Iran
- Average cloud cover in December: 29
The month with the most cloud cover is January (Cloud cover 33).
The month with the least cloud cover is August (Cloud cover 8).
Average visibility in December
Sis, Iran
- Average visibility in December: 9km
The months with the highest visibility are March, April, May, June, July, August, September, October and November (10km).
The months with the lowest visibility are January, February and December (9km).
