Long term weather forecast
Long term weather forecast

September weather forecast and Climate
Semnan, Iran

  • Average high temperature in September: 90.9°F

Warmest month (with highest average high temperature) is July (100°F).
Month with lowest average high temperature is January (47.1°F).

  • Average low temperature in September: 66.9°F

Month with highest average low temperature is July (76.8°F).
Coldest month (with lowest average low temperature) is January (30.2°F).

  • Average humidity in September: 30%

Month with highest relative humidity is January (63%).
Months with lowest relative humidity are June and July (28%).

  • Average rainfall in September: 0.1"

Wettest months (with highest rainfall) are January and March (0.9").
Driest months (with lowest rainfall) are June, July, August and September (0.1").

  • Average rainfall days in September: 0.8 days

Month with highest number of rainy days is March (7.2 days).
Month with lowest number of rainy days is September (0.8 days).

  • Average snowfall days in September: 0 days

Month with highest number of snowfall days is January (3.3 days).
Months with lowest number of snowfall days are April, May, June, July, August, September, October and November (0 days).

  • Average sunshine in September: 10.1h

Month with most sunshine is June (Average sunshine: 11.3h).
Month with least sunshine is January (Average sunshine: 5.5h).