are abundant, in fact, they amount to 1,235 millimeters (48.5 inches) per year. The rainiest period is from October to December.
The city is located in the southeast of Lazio, a region of central Italy, in the Sacco River Valley, about 70 km (45 mi) southeast of Rome. The historic center is 300 meters (985 feet) above sea level, while the newer part of the city (where the weather station is also located) is at 180 meters (590 ft). To the south-west, beyond the Lepini mountains is the Pontine plain.
Due to its location in a valley enclosed by the mountains, Frosinone's climate is slightly more continental than in Rome and Latina. In winter, cold air tends to stagnate, resulting in the accumulation of pollutants.
, from December to February, is quite mild, however, in periods of good weather, it can get cold at night, fog can form, and the temperature can drop slightly below freezing, especially in neighborhoods close to the countryside.
There are mild periods, during which Atlantic currents prevail, and there may also be rainy days.
in Frosinone is more frequent than in Rome. In past decades, an average of 20 cm (8 in) of snow fell per year. In February 2012 the snow thickness reached 60 cm (23.5 in).
During cold waves, the temperature can drop several degrees below freezing. Generally, the temperature reaches -8/-9 °C (16/18 °F) in the coldest periods, however, during the exceptional cold wave of January 1985, it reached -19 °C (-2 °F).
, from June to August, is hot and sunny, with rare rainy days and some thunderstorms coming from the Apennines.
At night the temperature drops a lot, but during the day it can be very hot, with highs of 36/37 °C (97/99 °F). During the August 2017 heat wave, the temperature reached 42.8 °C (109 °F).
to visit Frosinone are spring and autumn, ie from mid-April to mid-June and from September to early October. In June, the weather is often nice, but it can sometimes get hot, especially in the second half of the month.
. Here are the average temperatures.
January, the coldest month of the year, is generally a quite cold month. The average temperature is of
6.2 °C, with a minimum of
1.1 °C and a maximum of
11.4 °C.

On the coldest nights of the month, the temperature usually drops to around
-4.5 °C. However, it dropped to
-9.8 °C in January 2002.

On the warmest days of the month, the temperature usually reaches around
16 °C. However, it reached
18.8 °C in January 2018.

Precipitation amounts to
92.8 mm, distributed over 9 days.
The day lasts on average 9 hours and 35 minutes.

There are on average 4 hours of sunshine per day. So, the sun shines 42% of the time.
The average humidity is 75%. Hence, the air is normally humid.
The average wind speed is of
4.5 kph.
February is generally a quite mild month. The average temperature is of
7.2 °C, with a minimum of
1.6 °C and a maximum of
12.7 °C.

On the coldest nights of the month, the temperature usually drops to around
-4 °C. However, it dropped to
-10.2 °C in February 2018.

On the warmest days of the month, the temperature usually reaches around
18 °C. However, it reached
20.8 °C in February 2007.

Precipitation amounts to
91.6 mm, distributed over 8 days.
The day lasts on average 10 hours and 35 minutes.

There are on average 4.5 hours of sunshine per day. So, the sun shines 44% of the time.
The average humidity is 69%.
The average wind speed is of
6 kph.
March is generally a mild month. The average temperature is of
9.9 °C, with a minimum of
4.1 °C and a maximum of
15.8 °C.

On the coldest nights of the month, the temperature usually drops to around
-1.5 °C. However, it dropped to
-5 °C in March 1996.

On the warmest days of the month, the temperature usually reaches around
21.5 °C. However, it reached
25 °C in March 1991.

Precipitation amounts to
101.4 mm, distributed over 8 days.
The day lasts on average 12 hours and 0 minutes.

There are on average 5.5 hours of sunshine per day. So, the sun shines 46% of the time.
The average humidity is 67%.
The average wind speed is of
7.6 kph.
April is generally a mild month. The average temperature is of
13 °C, with a minimum of
6.8 °C and a maximum of
19.2 °C.

On the coldest nights of the month, the temperature usually drops to around
1.5 °C. However, it dropped to
-2 °C in April 2003.

On the warmest days of the month, the temperature usually reaches around
25 °C. However, it reached
29 °C in April 2012.

Precipitation amounts to
94.2 mm, distributed over 10 days.
The day lasts on average 13 hours and 25 minutes.

There are on average 7 hours of sunshine per day. So, the sun shines 51% of the time.
The average humidity is 68%.
The average wind speed is of
7.4 kph.
May is generally a very mild month. However, there are remarkable differences between night and day. The average temperature is of
17.3 °C, with a minimum of
10.8 °C and a maximum of
23.9 °C.

On the coldest nights of the month, the temperature usually drops to around
6 °C. However, it dropped to
3 °C in May 1991.

On the warmest days of the month, the temperature usually reaches around
29.5 °C. However, it reached
34 °C in May 2009.

Precipitation amounts to
77.9 mm, distributed over 8 days.
The day lasts on average 14 hours and 35 minutes. So the days are long.

There are on average 8.5 hours of sunshine per day. So, the sun shines 58% of the time.
The average humidity is 66%.
The average wind speed is of
6.8 kph.
June is generally a warm month. However, there are remarkable differences between night and day. The average temperature is of
21.6 °C, with a minimum of
14.8 °C and a maximum of
28.4 °C.

On the coldest nights of the month, the temperature usually drops to around
10.5 °C. However, it dropped to
6.8 °C in June 2006.

On the warmest days of the month, the temperature usually reaches around
34 °C. However, it reached
37.9 °C in June 2019.

Precipitation amounts to
50.9 mm, distributed over 5 days.
The day lasts on average 15 hours and 10 minutes. So the days are long. June 21, the summer solstice, is the longest day of the year in the Northern Hemisphere.

There are on average 9.5 hours of sunshine per day. So, the sun shines 64% of the time.
The average humidity is 61%.
The average wind speed is of
7.1 kph.
July is generally a warm to hot month. However, there are remarkable differences between night and day. The average temperature is of
24.5 °C, with a minimum of
17.5 °C and a maximum of
31.6 °C.

On the coldest nights of the month, the temperature usually drops to around
13.5 °C. However, it dropped to
10.4 °C in July 2000.

On the warmest days of the month, the temperature usually reaches around
36 °C. However, it reached
38.4 °C in July 2005.

Precipitation amounts to
46.5 mm, distributed over 4 days.
The day lasts on average 14 hours and 50 minutes. So the days are long.

There are on average 11 hours of sunshine per day. So, the sun shines 73% of the time.
The average humidity is 57%.
The average wind speed is of
7.7 kph.
August, the hottest month of the year, is generally a warm to hot month. However, there are remarkable differences between night and day. The average temperature is of
25.1 °C, with a minimum of
17.8 °C and a maximum of
32.4 °C.

On the coldest nights of the month, the temperature usually drops to around
13.5 °C. However, it dropped to
10 °C in August 1995.

On the warmest days of the month, the temperature usually reaches around
36.5 °C. However, it reached
42.8 °C in August 2017.

Precipitation amounts to
34.2 mm, distributed over 4 days.
The day lasts on average 13 hours and 50 minutes.

There are on average 10 hours of sunshine per day. So, the sun shines 72% of the time.
The average humidity is 57%.
The average wind speed is of
7.2 kph.
September is generally a warm month. The average temperature is of
20.5 °C, with a minimum of
14.1 °C and a maximum of
26.9 °C.

On the coldest nights of the month, the temperature usually drops to around
9 °C. However, it dropped to
4.8 °C in September 2008.

On the warmest days of the month, the temperature usually reaches around
32 °C. However, it reached
36 °C in September 2011.

Precipitation amounts to
98 mm, distributed over 7 days.
The day lasts on average 12 hours and 25 minutes.

There are on average 8 hours of sunshine per day. So, the sun shines 66% of the time.
The average humidity is 65%.
The average wind speed is of
6.1 kph.
October is generally a very mild month. The average temperature is of
16 °C, with a minimum of
10.3 °C and a maximum of
21.7 °C.

On the coldest nights of the month, the temperature usually drops to around
4.5 °C. However, it dropped to
0 °C in October 2009.

On the warmest days of the month, the temperature usually reaches around
27 °C. However, it reached
30 °C in October 2007.

Precipitation amounts to
136.4 mm, distributed over 8 days.
The day lasts on average 11 hours and 0 minutes.

There are on average 6.5 hours of sunshine per day. So, the sun shines 59% of the time.
The average humidity is 74%. Hence, the air is normally humid.
The average wind speed is of
4.9 kph.
November is generally a mild month. The average temperature is of
11 °C, with a minimum of
6.1 °C and a maximum of
16 °C.

On the coldest nights of the month, the temperature usually drops to around
-0.5 °C. However, it dropped to
-5 °C in November 1995.

On the warmest days of the month, the temperature usually reaches around
21.5 °C. However, it reached
24 °C in November 1994.

Precipitation amounts to
183.9 mm, distributed over 11 days.
The day lasts on average 9 hours and 50 minutes.

There are on average 4.5 hours of sunshine per day. So, the sun shines 46% of the time.
The average humidity is 79%. Hence, the air is normally humid.
The average wind speed is of
4.7 kph.
December is generally a quite mild month. The average temperature is of
7.1 °C, with a minimum of
2 °C and a maximum of
12.1 °C.

On the coldest nights of the month, the temperature usually drops to around
-4 °C. However, it dropped to
-7 °C in December 1991.

On the warmest days of the month, the temperature usually reaches around
17 °C. However, it reached
21 °C in December 1991.

Precipitation amounts to
153.4 mm, distributed over 10 days.
The day lasts on average 9 hours and 10 minutes. December 21, the winter solstice, is the shortest day of the year in the Northern Hemisphere.

There are on average 4 hours of sunshine per day. So, the sun shines 41% of the time.
The average humidity is 76%. Hence, the air is normally humid.
The average wind speed is of
5 kph.