Precipitation is scarce, although in winter there may be periods of bad weather.
, at 250 meters (820 ft) above sea level, 90 km (55 mi) east of Los Angeles, and south-east of San Bernardino, in an area far enough from the ocean to be very hot in summer.
, however, sometimes it can get cold at night, although in general the temperature only reaches the freezing mark on the
of the year. In January 2007 it dropped to -4.4 °C (24 °F). Due to its location in an area surrounded by mountains, the city is also subject to air stagnation and therefore pollution.
, and sometimes it can reach 44/45 °C (111/113 °F). In July 2018, it reached 47.8 °C (118 °F), while in September 2020 it reached 47.2 °C (117 °C).
To visit Riverside, you can choose the periods from mid-March to mid-April and from mid-October to mid-November. In winter, the weather is often mild and sunny, but sometimes it can be cold at night, and it can also rain.
. Here are the average temperatures.
January is generally a mild month. However, there are remarkable differences between night and day. The average temperature is of
13.1 °C, with a minimum of
6.4 °C and a maximum of
19.8 °C.
On the coldest nights of the month, the temperature usually drops to around
1 °C.
On the warmest days of the month, the temperature usually reaches around
28.5 °C.
Precipitation amounts to
60 mm, distributed over 5 days.
The day lasts on average 10 hours and 10 minutes.
The average humidity is 50%.
The average wind speed is of
7.9 kph.
February is generally a mild month. The average temperature is of
13.5 °C, with a minimum of
7.1 °C and a maximum of
19.9 °C.
On the coldest nights of the month, the temperature usually drops to around
1.5 °C.
On the warmest days of the month, the temperature usually reaches around
29.5 °C.
Precipitation amounts to
60 mm, distributed over 7 days.
The day lasts on average 11 hours and 0 minutes.
The average humidity is 55%.
The average wind speed is of
7.5 kph.
March is generally a very mild month. However, there are remarkable differences between night and day. The average temperature is of
15.3 °C, with a minimum of
8.3 °C and a maximum of
22.3 °C.
On the coldest nights of the month, the temperature usually drops to around
3 °C.
On the warmest days of the month, the temperature usually reaches around
31 °C.
Precipitation amounts to
30 mm, distributed over 5 days.
The day lasts on average 12 hours and 0 minutes.
The average humidity is 57%.
The average wind speed is of
7.6 kph.
April is generally a very mild month. However, there are remarkable differences between night and day. The average temperature is of
17.2 °C, with a minimum of
10 °C and a maximum of
24.4 °C.
On the coldest nights of the month, the temperature usually drops to around
5 °C.
On the warmest days of the month, the temperature usually reaches around
34.5 °C.
Precipitation amounts to
15 mm, distributed over 4 days.
The day lasts on average 13 hours and 5 minutes.
The average humidity is 55%.
The average wind speed is of
8.3 kph.
May is generally a warm month. However, there are remarkable differences between night and day. The average temperature is of
19.8 °C, with a minimum of
12.9 °C and a maximum of
26.6 °C.
On the coldest nights of the month, the temperature usually drops to around
8.5 °C.
On the warmest days of the month, the temperature usually reaches around
36 °C.
Precipitation amounts to only
5 mm, distributed over 2 days.
The day lasts on average 14 hours and 0 minutes.
The average humidity is 57%.
The average wind speed is of
8.8 kph.
June is generally a warm to hot month. However, there are remarkable differences between night and day. The average temperature is of
22.8 °C, with a minimum of
15.2 °C and a maximum of
30.4 °C.
On the coldest nights of the month, the temperature usually drops to around
11.5 °C.
On the warmest days of the month, the temperature usually reaches around
38 °C.
Precipitation amounts to only
0 mm, so on average it never rains in the whole month.
The day lasts on average 14 hours and 25 minutes. So the days are long. June 21, the summer solstice, is the longest day of the year in the Northern Hemisphere.
The average humidity is 56%.
The average wind speed is of
9.1 kph.
July is generally a warm to hot month. However, there are remarkable differences between night and day. The average temperature is of
25.9 °C, with a minimum of
17.7 °C and a maximum of
34.1 °C.
On the coldest nights of the month, the temperature usually drops to around
14 °C.
On the warmest days of the month, the temperature usually reaches around
40.5 °C.
Precipitation amounts to only
5 mm, and all occurs in one day.
The day lasts on average 14 hours and 5 minutes. So the days are long.
The average humidity is 52%.
The average wind speed is of
8.8 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
26.6 °C, with a minimum of
18.2 °C and a maximum of
34.9 °C.
On the coldest nights of the month, the temperature usually drops to around
14.5 °C.
On the warmest days of the month, the temperature usually reaches around
41 °C.
Precipitation amounts to only
0 mm, so on average it never rains in the whole month.
The day lasts on average 13 hours and 20 minutes.
The average humidity is 50%.
The average wind speed is of
8.1 kph.
September is generally a warm to hot month. However, there are remarkable differences between night and day. The average temperature is of
24.8 °C, with a minimum of
16.6 °C and a maximum of
32.9 °C.
On the coldest nights of the month, the temperature usually drops to around
12 °C.
On the warmest days of the month, the temperature usually reaches around
41.5 °C.
Precipitation amounts to only
5 mm, distributed over 0 days.
The day lasts on average 12 hours and 20 minutes.
The average humidity is 51%.
The average wind speed is of
7.2 kph.
October is generally a warm month. However, there are remarkable differences between night and day. The average temperature is of
20.5 °C, with a minimum of
12.9 °C and a maximum of
28.2 °C.
On the coldest nights of the month, the temperature usually drops to around
8.5 °C.
On the warmest days of the month, the temperature usually reaches around
37.5 °C.
Precipitation amounts to
10 mm, distributed over 2 days.
The day lasts on average 11 hours and 20 minutes.
The average humidity is 51%.
The average wind speed is of
7.1 kph.
November is generally a very mild month. However, there are remarkable differences between night and day. The average temperature is of
16.1 °C, with a minimum of
8.6 °C and a maximum of
23.6 °C.
On the coldest nights of the month, the temperature usually drops to around
3 °C.
On the warmest days of the month, the temperature usually reaches around
32.5 °C.
Precipitation amounts to
15 mm, distributed over 4 days.
The day lasts on average 10 hours and 25 minutes.
The average humidity is 49%.
The average wind speed is of
7.1 kph.
December, the coldest month of the year, is generally a mild month. However, there are remarkable differences between night and day. The average temperature is of
12.7 °C, with a minimum of
6 °C and a maximum of
19.3 °C.
On the coldest nights of the month, the temperature usually drops to around
0.5 °C.
On the warmest days of the month, the temperature usually reaches around
27.5 °C.
Precipitation amounts to
40 mm, distributed over 5 days.
The day lasts on average 9 hours and 55 minutes. December 21, the winter solstice, is the shortest day of the year in the Northern Hemisphere.
The average humidity is 50%.
The average wind speed is of
7.8 kph.