Qazvin, Iran climate
BSk Cold semi-arid
Qazvin has a strongly seasonal mild-temperate climate (Cold semi-arid, Köppen BSk). The hottest month is July with an average daily high near 96°F, while the coldest is January averaging around 25°F at night. Precipitation totals about 11 inches a year and is strongly seasonal — April alone averages 2.0 inches while September barely receives 0.09 inches.
Temperature & precipitation
Daily high–low temperature range with the monthly average, plus monthly precipitation · 1991–2020 normals · hover a month for the exact figuresHours of sunshine per day
Estimated sunny hours each month — daylight length × clear-sky fraction · 1991–2020 monthly cloud cover (NASA POWER)Qazvin climate normals (1991–2020)
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Avg high (°F) | 44 | 49 | 59 | 68 | 79 | 91 | 96 | 95 | 88 | 74 | 57 | 48 |
| Avg temp (°F) | 34 | 39 | 47 | 56 | 65 | 75 | 80 | 79 | 72 | 61 | 47 | 39 |
| Avg low (°F) | 25 | 28 | 36 | 43 | 51 | 60 | 65 | 64 | 57 | 47 | 37 | 29 |
| Precipitation (in) | 1.2 | 1.2 | 1.4 | 2.0 | 1.2 | 0.3 | 0.1 | 0.1 | 0.1 | 0.7 | 1.3 | 1.2 |
| Jan – Jun | Jan | Feb | Mar | Apr | May | Jun |
|---|---|---|---|---|---|---|
| Avg high (°F) | 44 | 49 | 59 | 68 | 79 | 91 |
| Avg temp (°F) | 34 | 39 | 47 | 56 | 65 | 75 |
| Avg low (°F) | 25 | 28 | 36 | 43 | 51 | 60 |
| Precipitation (in) | 1.2 | 1.2 | 1.4 | 2.0 | 1.2 | 0.3 |
| Jul – Dec | Jul | Aug | Sep | Oct | Nov | Dec |
|---|---|---|---|---|---|---|
| Avg high (°F) | 96 | 95 | 88 | 74 | 57 | 48 |
| Avg temp (°F) | 80 | 79 | 72 | 61 | 47 | 39 |
| Avg low (°F) | 65 | 64 | 57 | 47 | 37 | 29 |
| Precipitation (in) | 0.1 | 0.1 | 0.1 | 0.7 | 1.3 | 1.2 |
Sky & atmosphere
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Cloud cover (%) | 76 | 77 | 76 | 74 | 65 | 53 | 56 | 52 | 50 | 62 | 73 | 75 |
| Relative humidity (%) | 68 | 64 | 59 | 56 | 49 | 40 | 35 | 35 | 41 | 51 | 63 | 67 |
| Wind speed (mph) | 4.6 | 5.5 | 5.7 | 5.4 | 5.1 | 5.9 | 6.1 | 5.7 | 5.3 | 4.6 | 4.2 | 4.2 |
| Jan – Jun | Jan | Feb | Mar | Apr | May | Jun |
|---|---|---|---|---|---|---|
| Cloud cover (%) | 76 | 77 | 76 | 74 | 65 | 53 |
| Relative humidity (%) | 68 | 64 | 59 | 56 | 49 | 40 |
| Wind speed (mph) | 4.6 | 5.5 | 5.7 | 5.4 | 5.1 | 5.9 |
| Jul – Dec | Jul | Aug | Sep | Oct | Nov | Dec |
|---|---|---|---|---|---|---|
| Cloud cover (%) | 56 | 52 | 50 | 62 | 73 | 75 |
| Relative humidity (%) | 35 | 35 | 41 | 51 | 63 | 67 |
| Wind speed (mph) | 6.1 | 5.7 | 5.3 | 4.6 | 4.2 | 4.2 |
Methodology & sources
Temperature & precipitation — 1991–2020 normals computed from 26 years of daily observations at Ghazvin, a weather station, about 5 km from the city centre. The underlying daily records come from NOAA's global station network.
Cloud, humidity, wind & sunshine — modelled estimates from NASA POWER, NASA's satellite-and-reanalysis climatology. This is the standard global source for atmospheric variables, which are not measured at most weather stations.