Climate averages 1991–2020
Terni weather
in October.
A mild, wet month: the 6th warmest and the 10th driest of the year.
Long-term climate patterns, not a forecast for a particular trip.
October is a mild month in Terni: daytime highs average 20.7°C and nights cool to about 11.5°C. By daytime temperature it is the 6th warmest of the 12 months.
Expect about 105 mm of rain on roughly 11 days, which makes October a wet month (the 10th driest of the 12 months). Daylight, from sunrise to sunset, lasts about 11 h 06 min on an average October day.
The nearest other city in this atlas is Guidonia Montecelio (64 km away). In October its highs average 20.9°C, about as warm as Terni, with 113 mm of rain.
Among the 79 cities listed in Italy, Terni ranks joint 27th of 79 for the warmest October highs and 39th of 79 for the driest October (rainfall, lowest first). The mean October high of those 79 cities is 19.6°C; Terni is 1.1°C warmer than that mean.
From October to November, average highs fall by 5.4°C to 15.3°C, and monthly rainfall rises from 105 mm to 129 mm.
The annual picture
October 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
Terni climate table
| Month | Average highHigh / low | Average low | Rainfall mm/month | Rain days ≥1 mm/day | Daylight hours/dayDaylight h/day |
|---|---|---|---|---|---|
| January | 10.5°C2.2°C | 2.2°C | 71 | 9.5 | 9.49 h |
| February | 11.6°C2.2°C | 2.2°C | 82 | 10.0 | 10.511 h |
| March | 15.0°C4.5°C | 4.5°C | 92 | 10.8 | 11.912 h |
| April | 18.4°C7.4°C | 7.4°C | 98 | 13.0 | 13.313 h |
| May | 22.9°C11.4°C | 11.4°C | 83 | 11.3 | 14.615 h |
| June | 27.8°C15.5°C | 15.5°C | 53 | 8.7 | 15.215 h |
| July | 31.4°C18.5°C | 18.5°C | 30 | 5.7 | 15.015 h |
| August | 31.6°C19.0°C | 19.0°C | 33 | 6.1 | 13.914 h |
| September | 25.6°C15.0°C | 15.0°C | 81 | 9.4 | 12.513 h |
| October, selected | 20.7°C11.5°C | 11.5°C | 105 | 10.5 | 11.111 h |
| November | 15.3°C7.2°C | 7.2°C | 129 | 12.4 | 9.810 h |
| December | 11.1°C3.2°C | 3.2°C | 107 | 10.7 | 9.19 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
October in nearby cities
- Guidonia Montecelio in OctoberItaly · 64 kmHigh 20.9°C · Low 11.6°C · 113 mm rain
- Perugia in OctoberItaly · 64 kmHigh 17.6°C · Low 8.9°C · 88 mm rain
- Rome in OctoberItaly · 75 kmHigh 20.9°C · Low 13.0°C · 116 mm rain
- Acilia-Castel Fusano-Ostia Antica in OctoberItaly · 93 kmHigh 20.6°C · Low 15.3°C · 131 mm rain
- Fiumicino in OctoberItaly · 94 kmHigh 20.5°C · Low 15.6°C · 131 mm rain
- Aprilia in OctoberItaly · 108 kmHigh 20.4°C · Low 14.1°C · 131 mm rain
- Arezzo in OctoberItaly · 118 kmHigh 18.8°C · Low 10.7°C · 114 mm rain
- Latina in OctoberItaly · 124 kmHigh 20.9°C · Low 13.9°C · 127 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 Terni) is explained once on the Terni year overview and on the Sources, method and limits page.