Average temperature in Viterbo
The mean minimum and maximum temperatures over the year in Viterbo (Lazio), Italy.
- The months of May, June, September and October have nice average temperatures.
- On average, the warmest month(s) are July and August.
- On average, the warmest month is August with 31°C.
- On average, the coolest month is January with 11°C.
- The average annual maximum temperature is 20°C.
- The average annual minimum temperature is 11°C.
Weather Forecasts for Viterbo
broken clouds and no rain
partly cloudy and small chance of rain
broken clouds and no rain