Climate averages 1991–2020
Īlām weather
in December.
A cool, moderately wet month: the 10th warmest and the 9th driest of the year.
Long-term climate patterns, not a forecast for a particular trip.
December is a cool month in Īlām: daytime highs average 9.8°C and nights cool to about 0.7°C. By daytime temperature it is the 10th warmest of the 12 months.
Expect about 78 mm of rain on roughly 9 days, which makes December a moderately wet month (the 9th driest of the 12 months). Daylight, from sunrise to sunset, lasts about 9 h 58 min on an average December day.
The nearest other city in this atlas is Eslāmābād-e Gharb (53 km away). In December its highs average 9.7°C, about as warm as Īlām, with 73 mm of rain.
Among the 128 cities listed in Iran, Īlām ranks joint 67th of 128 for the warmest December highs and joint 106th of 128 for the driest December (rainfall, lowest first). The mean December high of those 128 cities is 10.9°C; Īlām is 1.1°C cooler than that mean.
From December to January, average highs fall by 2.6°C to 7.3°C, and monthly rainfall rises from 78 mm to 89 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
Īlām climate table
| Month | Average highHigh / low | Average low | Rainfall mm/month | Rain days ≥1 mm/day | Daylight hours/dayDaylight h/day |
|---|---|---|---|---|---|
| January | 7.3°C-1.7°C | -1.7°C | 89 | 9.8 | 10.210 h |
| February | 8.9°C-0.8°C | -0.8°C | 88 | 10.6 | 11.011 h |
| March | 13.2°C2.8°C | 2.8°C | 96 | 11.1 | 12.012 h |
| April | 18.9°C7.5°C | 7.5°C | 67 | 9.4 | 13.013 h |
| May | 25.7°C12.7°C | 12.7°C | 21 | 4.9 | 13.914 h |
| June | 32.2°C17.7°C | 17.7°C | 1.0 | 0.3 | 14.314 h |
| July | 35.3°C20.8°C | 20.8°C | 0.3 | 0.1 | 14.214 h |
| August | 35.3°C20.6°C | 20.6°C | 0.2 | 0.0 | 13.413 h |
| September | 30.9°C16.7°C | 16.7°C | 1.1 | 0.3 | 12.412 h |
| October | 23.9°C11.8°C | 11.8°C | 31 | 4.2 | 11.411 h |
| November | 14.7°C4.9°C | 4.9°C | 73 | 7.9 | 10.510 h |
| December, selected | 9.8°C0.7°C | 0.7°C | 78 | 8.6 | 10.010 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
- Eslāmābād-e Gharb in DecemberIran · 53 kmHigh 9.7°C · Low 0.3°C · 73 mm rain
- Kermanshah in DecemberIran · 96 kmHigh 9.1°C · Low -0.1°C · 64 mm rain
- Kūhdasht in DecemberIran · 111 kmHigh 11.0°C · Low 0.9°C · 90 mm rain
- Khānaqīn in DecemberIraq · 124 kmHigh 16.4°C · Low 6.6°C · 75 mm rain
- Al-Kut in DecemberIraq · 137 kmHigh 18.5°C · Low 8.6°C · 31 mm rain
- Al Miqdādīyah in DecemberIraq · 142 kmHigh 17.2°C · Low 7.7°C · 50 mm rain
- Kelar in DecemberIraq · 150 kmHigh 16.0°C · Low 6.7°C · 91 mm rain
- An Nu‘mānīyah in DecemberIraq · 153 kmHigh 18.4°C · Low 8.1°C · 27 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 Īlām) is explained once on the Īlām year overview and on the Sources, method and limits page.