Climate averages 1991–2020
Jahrom weather
in December.
A mild, moderately wet month: the 10th warmest and the 9th driest of the year. Meets the pleasant-weather rule
Long-term climate patterns, not a forecast for a particular trip.
December is a mild month in Jahrom: daytime highs average 18.3°C and nights cool to about 7.7°C. By daytime temperature it is the 10th warmest of the 12 months.
Expect about 45 mm of rain on roughly 4 days, which makes December a moderately wet month (the 9th driest of the 12 months). Daylight, from sunrise to sunset, lasts about 10 h 22 min on an average December day.
The nearest other city in this atlas is Fasā (49 km away). In December its highs average 15.5°C, 2.8°C cooler than Jahrom, with 36 mm of rain.
Among the 128 cities listed in Iran, Jahrom ranks 16th of 128 for the warmest December highs and joint 79th of 128 for the driest December (rainfall, lowest first). The mean December high of those 128 cities is 10.9°C; Jahrom is 7.4°C warmer than that mean.
From December to January, average highs fall by 2.7°C to 15.6°C, and monthly rainfall rises from 45 mm to 65 mm.
The annual picture
December in context
Monthly rainfall
Average total · mmAverages from hourly ERA5 reanalysis data. Actual weather varies from year to year. How these numbers are calculated
Every month, side by side
Jahrom climate table
| Month | Average highHigh / low | Average low | Rainfall mm/month | Rain days ≥1 mm/day | Daylight hours/dayDaylight h/day |
|---|---|---|---|---|---|
| January | 15.6°C5.7°C | 5.7°C | 65 | 6.1 | 10.511 h |
| February | 17.9°C7.3°C | 7.3°C | 49 | 5.1 | 11.211 h |
| March | 22.2°C10.8°C | 10.8°C | 50 | 5.0 | 12.012 h |
| April | 28.4°C16.1°C | 16.1°C | 13 | 2.1 | 12.813 h |
| May | 35.2°C21.8°C | 21.8°C | 0.9 | 0.3 | 13.614 h |
| June | 39.6°C25.2°C | 25.2°C | 0.2 | 0.1 | 13.914 h |
| July | 40.7°C26.9°C | 26.9°C | 1.0 | 0.4 | 13.814 h |
| August | 39.8°C25.9°C | 25.9°C | 2.1 | 0.8 | 13.213 h |
| September | 36.4°C22.7°C | 22.7°C | 0.6 | 0.2 | 12.412 h |
| October | 30.8°C18.0°C | 18.0°C | 0.5 | 0.2 | 11.512 h |
| November | 23.3°C12.0°C | 12.0°C | 15 | 2.2 | 10.811 h |
| December, selected | 18.3°C7.7°C | 7.7°C | 45 | 3.6 | 10.410 h |
Rainfall is the average of the 30 separate monthly totals. A rain day is a local calendar day with at least 1 mm of precipitation. Daylight is the calculated sunrise-to-sunset length, not measured sunshine.
Compare places
December in nearby cities
- Fasā in DecemberIran · 49 kmHigh 15.5°C · Low 4.4°C · 36 mm rain
- Dārāb in DecemberIran · 100 kmHigh 16.9°C · Low 5.6°C · 39 mm rain
- Shiraz in DecemberIran · 159 kmHigh 13.7°C · Low 4.1°C · 69 mm rain
- Marvdasht in DecemberIran · 170 kmHigh 13.1°C · Low -0.3°C · 45 mm rain
- Shahr-e Ṣadrā in DecemberIran · 177 kmHigh 11.5°C · Low 0.3°C · 58 mm rain
- Kāzerūn in DecemberIran · 223 kmHigh 17.0°C · Low 7.5°C · 80 mm rain
- Sirjan in DecemberIran · 232 kmHigh 13.2°C · Low 1.1°C · 26 mm rain
- Borāzjān in DecemberIran · 244 kmHigh 21.5°C · Low 10.8°C · 58 mm rain
Read the numbers correctly
Climate, not a promise.
These patterns help compare months. They cannot tell you the weather on a specific day of your trip.
Sources, method and limitsHow these numbers are made (what the highs, lows and rain days mean, the sources and the model cell used for Jahrom) is explained once on the Jahrom year overview and on the Sources, method and limits page.