Climate and Average Weather Year Round in San Bernardino California, United States

In San Bernardino, the summers are hot, arid, and clear and the winters are long, cool, and partly cloudy. Over the course of the year, the temperature typically varies from 42°F to 96°F and is rarely below 35°F or above 104°F.

Weather forecast San Bernardino
Weather forecast San Bernardino

Based on the tourism score, the best time of year to visit San Bernardino for warm-weather activities is from late May to mid October.

Average Temperature in San Bernardino 

The hot season lasts for 3.1 months, from June 19 to September 22, with an average daily high temperature above 90°F. The hottest month of the year in San Bernardino is August, with an average high of 96°F and low of 64°F.

The cool season lasts for 3.9 months, from November 22 to March 17, with an average daily high temperature below 72°F. The coldest month of the year in San Bernardino is December, with an average low of 43°F and high of 66°F.

Rainfall 

To show variation within the months and not just the monthly totals, we show the rainfall accumulated over a sliding 31-day period centered around each day of the year. San Bernardino experiences significant seasonal variation in monthly rainfall.

The rainy period of the year lasts for 5.5 months, from October 30 to April 15, with a sliding 31-day rainfall of at least 0.5 inches. The month with the most rain in San Bernardino is February, with an average rainfall of 2.3 inches.

The rainless period of the year lasts for 6.5 months, from April 15 to October 30. The month with the least rain in San Bernardino is June, with an average rainfall of 0.1 inches.

Weather forecast April 5, 2023

Weather forecast April 5, 2023 - P5

Weather 92103

High temperature : 57°F

Low temperature : 53°F

- Overcast clouds, Wind speed 15.01 mph, wind out of the NW. Visibility 7 mi, humidity 57% . Chance of Rain : 40 % .

Today's Air Quality - Weather 92103 : Moderate

- Air Quality Index : CO : 250.34 ; NH3 : 0.68 ; NO : 0.85 ; NO2 : 6.26 ; O3 : 92.98 ; PM10 : 3.53 ; PM2.5 : 2.18 ; SO2 : 1.22

Weather 92104

High temperature : 57°F

Low temperature : 52°F

- Overcast clouds, Wind speed 15.01 mph, wind out of the NW. Visibility 7 mi, humidity 57% . Chance of Rain : 40 % .

Today's Air Quality - Weather 92104 : Moderate

- Air Quality Index : CO : 250.34 ; NH3 : 0.68 ; NO : 0.85 ; NO2 : 6.26 ; O3 : 92.98 ; PM10 : 3.53 ; PM2.5 : 2.18 ; SO2 : 1.22

Weather 92105

High temperature : 57°F

Low temperature : 52°F

- Overcast clouds, Wind speed 15.01 mph, wind out of the NW. Visibility 7 mi, humidity 56% . Chance of Rain : 40 % .

Today's Air Quality - Weather 92105 : Moderate

- Air Quality Index : CO : 250.34 ; NH3 : 0.68 ; NO : 0.85 ; NO2 : 6.26 ; O3 : 92.98 ; PM10 : 3.53 ; PM2.5 : 2.18 ; SO2 : 1.22

Weather 92106

High temperature : 58°F

Low temperature : 54°F

- Overcast clouds, Wind speed 15.01 mph, wind out of the NW. Visibility 7 mi, humidity 58% . Chance of Rain : 20 % .

Today's Air Quality - Weather 92106 : Moderate

- Air Quality Index : CO : 223.64 ; NH3 : 0.23 ; NO : 0.03 ; NO2 : 0.32 ; O3 : 98.71 ; PM10 : 2.16 ; PM2.5 : 1.13 ; SO2 : 0.7

Weather 21703

High temperature : 65°F

Low temperature : 60°F

- Overcast clouds, Wind speed 11.5 mph, wind out of the W. Visibility 3 mi, humidity 93% . Chance of Rain : 100 % .

Today's Air Quality - Weather 21703 : Moderate

- Air Quality Index : CO : 223.64 ; NH3 : 0.4 ; NO : 0.01 ; NO2 : 1.95 ; O3 : 72.24 ; PM10 : 3.1 ; PM2.5 : 2.03 ; SO2 : 0.75

Weather 92108

High temperature : 57°F

Low temperature : 53°F

- Overcast clouds, Wind speed 15.01 mph, wind out of the NW. Visibility 7 mi, humidity 57% . Chance of Rain : 0 % .

Today's Air Quality - Weather 92108 : Moderate

- Air Quality Index : CO : 250.34 ; NH3 : 0.68 ; NO : 0.85 ; NO2 : 6.26 ; O3 : 92.98 ; PM10 : 3.53 ; PM2.5 : 2.18 ; SO2 : 1.22

Weather 92109

High temperature : 58°F

Low temperature : 53°F

- Overcast clouds, Wind speed 12.66 mph, wind out of the WNW. Visibility 7 mi, humidity 58% . Chance of Rain : 40 % .

Today's Air Quality - Weather 92109 : Moderate

- Air Quality Index : CO : 223.64 ; NH3 : 0.23 ; NO : 0.03 ; NO2 : 0.32 ; O3 : 98.71 ; PM10 : 2.16 ; PM2.5 : 1.13 ; SO2 : 0.7

Weather 92110

High temperature : 58°F

Low temperature : 54°F

- Overcast clouds, Wind speed 15.01 mph, wind out of the NW. Visibility 7 mi, humidity 57% . Chance of Rain : 40 % .

Today's Air Quality - Weather 92110 : Moderate

- Air Quality Index : CO : 223.64 ; NH3 : 0.23 ; NO : 0.03 ; NO2 : 0.32 ; O3 : 98.71 ; PM10 : 2.16 ; PM2.5 : 1.13 ; SO2 : 0.7

Weather 92336

High temperature : 57°F

Low temperature : 49°F

- Overcast clouds, Wind speed 16.11 mph, wind out of the W. Visibility 7 mi, humidity 43% . Chance of Rain : 40 % .

Today's Air Quality - Weather 92336 : Moderate

- Air Quality Index : CO : 277.04 ; NH3 : 1.01 ; NO : 2.85 ; NO2 : 16.62 ; O3 : 94.41 ; PM10 : 10.58 ; PM2.5 : 8.29 ; SO2 : 2.12

Weather 92112

High temperature : 57°F

Low temperature : 53°F

- Overcast clouds, Wind speed 15.01 mph, wind out of the NW. Visibility 7 mi, humidity 57% . Chance of Rain : 40 % .

Today's Air Quality - Weather 92112 : Moderate

- Air Quality Index : CO : 250.34 ; NH3 : 0.68 ; NO : 0.85 ; NO2 : 6.26 ; O3 : 92.98 ; PM10 : 3.53 ; PM2.5 : 2.18 ; SO2 : 1.22

Weather 01852 - Lowell MA

clear sky

68°

clear sky

Feels like 67°
Sunrise/Sunset - 01852
Sunrise/Sunset

05:32/19:50

Temperature - 01852
High/Low

76°F

/

59°F

Humidity in 01852
Humidity

61%

Pressure
Pressure

1010 hPa

Visibility
Visibility

7 mi

Wind
Wind

5.75 mph