The average temperature in Grenoble is 52 degrees F, according to Climate Temp Info. In July it is frequently 79 degrees F and in December the average low is 27 degrees.
The rainiest month in Grenoble is September. In a year, the rainfall is about 38.8 inches. The town receives an average of 3.2 inches of rain each month. Grenoble gets frost for about 77 days every year; most of those days occur in January.
Humidity levels average 73.9 percent. The most humid month is December, when levels easily reach 80 percent. In April it is relatively dry at about 69 percent humidity.
Grenoble has an average of 2,081 hours of sunlight in one year. In July the sun is in full swing with 9.1 sunlight hours in a day. In December there are only about 2.1 sunlight hours per day.
