Jahrom climate — normals and trends
Jahrom (Iran) has a hot semi-arid climate (BSh) under the Köppen-Geiger classification. Its mean annual temperature is 21.7 °C and it receives 226 mm of precipitation per year.
These figures are normals computed over 86 complete calendar years, from 1940 to 2025, using ERA5 reanalysis data from the Copernicus programme.
The warmest month is July (33.0 °C on average) and the coldest is January (9.1 °C). Rainfall peaks in January.
Jahrom averages 7 frost days, 170 hot days (≥ 30 °C) and 25 rainy days per year.
Jahrom has warmed by +1.9 °C between 1940 and 2025, or +0.22 °C per decade. This trend is statistically significant.
The hottest day of the period reached 44.4 °C (on 6 June 2021) and the coldest -12.6 °C (on 21 January 1990).
Data from ERA5 reanalysis (Copernicus Climate Change Service), redistributed under a CC-BY 4.0 licence. Normals are recomputed whenever the archive is updated.
Climate normals · ERA5
JahromFars
- coords
- 28.50°, 53.56°
- period
- 1940–2025 · 86 yrs
Mean daily temperature
21.7°C
Average daily high
27.7°C
Average daily low
14.5°C
Annual rainfall
226mm
Sunshine / day
11.2h
Mean relative humidity
35%
Average peak wind
11.3km/h
Seasonal range
23.9°C
Frost days (< 0 °C)
7 d/yr
Hot days (≥ 30 °C)
170 d/yr
Rainy days (≥ 1 mm)
25 d/yr
Annual snowfall
0.6 cm
Average feels-like high
26.3 °C
Average feels-like low
12.1 °C
Average peak gust
32.7 km/h
Tropical nights (≥ 20 °C)
124 d/yr
Solar radiation
21.9 MJ/m²
Has the climate changed?
One stripe per year, 1940 to 2025
+1.9 °C
since 1940
+0.2 °C per decade · r² = 0.41 · p = < 0.001
Trend fitted by linear regression (ordinary least squares) on annual means. A trend is shown only when it is statistically significant (p < 0.05).
A climograph overlays rainfall (bars) and temperature (line): the standard reading in climatology, where you can see at a glance whether the warm season is also the dry one.
Records for the period
Hottest day
44.4 °C
6 June 2021
Coldest day
-12.6 °C
21 January 1990
Wettest day
78 mm
11 February 1980
Windiest day
27.2 km/h
2 April 1968
Strongest gust
81.0 km/h
24 January 1974
Hottest feels-like
45.6 °C
5 July 2019
Coldest feels-like
-17.0 °C
21 January 1990
Snowiest day
9.9 cm
18 January 1975
Sunniest day
13.0 h
1 May 1940
Normals computed over complete calendar years 1940–2025.
A specific year
Pick a year and see how it compares to normal — warmer, drier or more extreme than usual?
Across the whole year
Month by month
| High | vs. normal | Precipitation | vs. normal | |
|---|---|---|---|---|
| Jan | 17.0 °C | +2.5 °C | 7 mm | -54 mm |
| Feb | 16.7 °C | 0.0 °C | 33 mm | -10 mm |
| Mar | 22.3 °C | +1.3 °C | 35 mm | -7 mm |
| Apr | 32.9 °C | +6.0 °C | 0 mm | -13 mm |
| May | 37.8 °C | +4.3 °C | 0 mm | -3 mm |
| Jun | 39.8 °C | +1.6 °C | 0 mm | -0 mm |
| Jul | 40.9 °C | +1.7 °C | 6 mm | +4 mm |
| Aug | 40.4 °C | +2.1 °C | 0 mm | -2 mm |
| Sep | 37.6 °C | +2.4 °C | 0 mm | -0 mm |
| Oct | 31.6 °C | +1.9 °C | 0 mm | -1 mm |
| Nov | 25.5 °C | +3.1 °C | 0 mm | -14 mm |
| Dec | 17.5 °C | +0.8 °C | 145 mm | +99 mm |
The year's extremes
What was the weather like that day?
Your birthday, a wedding, a memorable trip: discover the actual weather for any date since 1940.
Frequently asked questions
What is the climate of Jahrom?
Jahrom has a hot semi-arid climate (Köppen BSh). Over 1940-2025, the average annual temperature is 21.7 °C and it receives 226 mm of precipitation per year.
What is the hottest day ever recorded in Jahrom?
The hottest day measured in Jahrom between 1940 and 2025 was 6 June 2021, reaching 44.4 °C.
What is the coldest day in Jahrom?
The coldest day measured in Jahrom between 1940 and 2025 was 21 January 1990, at -12.6 °C.
Does it snow in Jahrom?
Almost never: Jahrom sees virtually no snow, with about 7 frost days per year.
Has the climate of Jahrom warmed?
Yes: Jahrom warmed by +1.9 °C between 1940 and 2025, a statistically significant trend.
What is the wettest day in Jahrom?
The wettest day measured in Jahrom between 1940 and 2025 was 11 February 1980, with 78 mm of rain in 24 hours.
What was the windiest day in Jahrom?
The windiest day measured in Jahrom between 1940 and 2025 was 2 April 1968, with winds reaching 27.2 km/h.
What is the warmest month in Jahrom?
The warmest month in Jahrom is July (33.0 °C on average); the coldest is January (9.1 °C).
How much does it rain in Jahrom?
Jahrom receives on average 226 mm of precipitation per year, spread over about 25 rainy days.
Is it sunny in Jahrom?
Jahrom gets on average 11.2 hours of sunshine per day, roughly 4,088 hours per year over 1940-2025.
What is the biggest single-day snowfall in Jahrom?
The heaviest 24-hour snowfall measured in Jahrom between 1940 and 2025 was 18 January 1975, with 9.9 cm.
Are there tropical nights in Jahrom?
Yes: Jahrom has on average 124 tropical nights per year (temperature staying above 20 °C), over 1940-2025.
What was the most extreme apparent temperature in Jahrom?
In Jahrom, between 1940 and 2025, the highest apparent temperature reached 45.6 °C on 5 July 2019, and the lowest was -17.0 °C on 21 January 1990.
Compare Jahrom with another city
Pick a second city: its normals will be set against these, indicator by indicator.
Nearby cities
The climate around Jahrom