What is the warmest month in San Bernardino County?
The warmest month is July with an average temperature of 95 °F over the past years.
Calculated from weather data of Ontario International Airport (KONT) between 2020 and 2024.
Month | Average | 2024 | 2023 | 2022 | 2021 | 2020 |
---|---|---|---|---|---|---|
January | 67.0 | 65.0 | 60.0 | 68.0 | 69.0 | 69.0 |
February | 67.0 | 63.0 | 63.0 | 72.0 | 69.0 | 72.0 |
March | 70.0 | 66.0 | 62.0 | 75.0 | 69.0 | 66.0 |
April | 77.0 | 75.0 | 77.0 | 78.0 | 73.0 | |
May | 78.0 | 73.0 | 80.0 | 80.0 | 85.0 | |
June | 87.0 | 78.0 | 91.0 | 92.0 | 87.0 | |
July | 95.0 | 95.0 | 92.0 | 96.0 | 93.0 | |
August | 95.0 | 94.0 | 96.0 | 95.0 | 97.0 | |
September | 90.0 | 83.0 | 93.0 | 91.0 | 97.0 | |
October | 84.0 | 85.0 | 81.0 | 82.0 | 88.0 | |
November | 76.0 | 76.0 | 69.0 | 80.0 | 76.0 | |
December | 67.0 | 70.0 | 61.0 | 62.0 | 70.0 | |
Average | 78.0 | 65.0 | 76.0 | 80.0 | 80.0 | 81.0 |
Month | Average | 2024 | 2023 | 2022 | 2021 | 2020 |
---|---|---|---|---|---|---|
January | 46.0 | 46 | 44 | 46 | 46 | 46 |
February | 47.0 | 48 | 42 | 48 | 47 | 48 |
March | 49.0 | 48 | 46 | 50 | 47 | 49 |
April | 54.0 | 51 | 55 | 54 | 55 | |
May | 57.0 | 55 | 56 | 58 | 60 | |
June | 62.0 | 58 | 64 | 64 | 62 | |
July | 67.0 | 67 | 65 | 69 | 65 | |
August | 68.0 | 68 | 69 | 69 | 70 | |
September | 66.0 | 64 | 70 | 66 | 67 | |
October | 60.0 | 60 | 60 | 59 | 62 | |
November | 52.0 | 52 | 47 | 54 | 50 | |
December | 47.0 | 49 | 43 | 45 | 46 | |
Average | 55.0 | 47.0 | 55.0 | 57.0 | 56.0 | 57.0 |
Number of days | 2024 | 2023 | 2022 | 2021 | 2020 |
---|---|---|---|---|---|
86 °F or warmer | 0 | 82 | 120 | 131 | 141 |
77 °F or warmer | 2 | 162 | 200 | 206 | 211 |
68 °F or warmer | 23 | 250 | 287 | 289 | 290 |
32 °F or colder | 0 | 0 | 0 | 0 | 0 |
Month | Average | 2024 | 2023 | 2022 | 2021 | 2020 |
---|---|---|---|---|---|---|
January | 7.3 | 7 | 18 | 1 | 4 | 0 |
February | 7.6 | 19 | 10 | 2 | 2 | 0 |
March | 8.0 | 11 | 23 | 3 | 5 | 7 |
April | 2.3 | 2 | 1 | 2 | 11 | |
May | 2.9 | 6 | 1 | 1 | 1 | |
June | 0.7 | 2 | 0 | 0 | 2 | |
July | 0.2 | 0 | 0 | 1 | 0 | |
August | 0.7 | 4 | 0 | 1 | 0 | |
September | 0.6 | 2 | 2 | 0 | 0 | |
October | 1.3 | 1 | 0 | 6 | 1 | |
November | 2.8 | 2 | 6 | 0 | 1 | |
December | 6.8 | 4 | 9 | 17 | 2 | |
Average | 4.2 | 12.1 | 6.2 | 1.7 | 3.2 | 2.1 |
Month | Average | 2024 | 2023 | 2022 | 2021 | 2020 |
---|---|---|---|---|---|---|
January | 5.2 | 4 | 7 | 5 | 6 | 4 |
February | 5.8 | 5 | 6 | 8 | 6 | 7 |
March | 6.7 | 6 | 6 | 8 | 7 | 7 |
April | 7.2 | 6 | 7 | 7 | 6 | |
May | 7.1 | 7 | 7 | 7 | 7 | |
June | 7.1 | 6 | 7 | 7 | 8 | |
July | 6.9 | 7 | 7 | 7 | 7 | |
August | 7.1 | 7 | 7 | 7 | 7 | |
September | 6.6 | 6 | 6 | 6 | 6 | |
October | 6.5 | 6 | 6 | 6 | 6 | |
November | 5.5 | 6 | 6 | 5 | 5 | |
December | 4.9 | 4 | 4 | 5 | 5 | |
Average | 6.3 | 5.1 | 6.2 | 6.5 | 6.4 | 6.4 |
Month | 2024 | 2023 | 2022 | 2021 | 2020 |
---|---|---|---|---|---|
January | W | N | NW | N | W |
February | W | W | NW | W | N |
March | W | SW | W | SW | SW |
April | W | W | W | SW | |
May | SW | W | W | SW | |
June | SW | W | W | W | |
July | W | W | W | W | |
August | W | W | W | W | |
September | SW | W | W | W | |
October | W | SW | W | W | |
November | N | W | W | W | |
December | W | SW | W | NW |
The warmest month is July with an average temperature of 95 °F over the past years.
The coldest month is January with an average daytime temperature of 67 °F in the past few years.
Chance of precipitation is the highest in March with a probability of around 8.0 %.
The least rainfall and snow can be expected in July. The probability is about 0.3 %.