| Month | High | Low | Rain | Wet days | Score |
|---|---|---|---|---|---|
| January | 19.8° | 8.5° | 71.3mm | 6.1 | 87 |
| February | 19.6° | 9° | 73.7mm | 6.2 | 86 |
| March | 20.7° | 10.7° | 41.7mm | 5.4 | 89 |
| April | 22.2° | 12.1° | 14.7mm | 2.9 | 94 |
| May | 23° | 14.5° | 7mm | 1.7 | 97 |
| June | 24.8° | 16.5° | 1.1mm | 0.7 | 99 |
| July | 27.8° | 18.3° | 1mm | 0.5 | 96 |
| August | 28.9° | 18.7° | 2.4mm | 0.2 | 92 |
| September | 28.2° | 17.9° | 2.3mm | 0.6 | 94 |
| October | 25.7° | 15.1° | 13.3mm | 2.2 | 96 |
| November | 22.7° | 11.1° | 19.3mm | 3 | 94 |
| December | 19.5° | 8.3° | 56.7mm | 5.4 | 88 |
January in Bellflower averages a daily high of 19.8°C with nights around 8.5°C. Expect roughly 6.1 wet days totalling 71.3mm. Comfortable conditions for being outdoors all day.
February in Bellflower averages a daily high of 19.6°C with nights around 9°C. Expect roughly 6.2 wet days totalling 73.7mm. Comfortable conditions for being outdoors all day.
March in Bellflower averages a daily high of 20.7°C with nights around 10.7°C. Expect roughly 5.4 wet days totalling 41.7mm. Comfortable conditions for being outdoors all day.
April in Bellflower averages a daily high of 22.2°C with nights around 12.1°C. Rain is rare — about 2.9 wet days and 14.7mm across the month. Comfortable conditions for being outdoors all day.
May in Bellflower averages a daily high of 23°C with nights around 14.5°C. Rain is rare — about 1.7 wet days and 7mm across the month. Comfortable conditions for being outdoors all day.
June in Bellflower averages a daily high of 24.8°C with nights around 16.5°C. Rain is rare — about 0.7 wet days and 1.1mm across the month. Comfortable conditions for being outdoors all day.
July in Bellflower averages a daily high of 27.8°C with nights around 18.3°C. Rain is rare — about 0.5 wet days and 1mm across the month. Comfortable conditions for being outdoors all day.
August in Bellflower averages a daily high of 28.9°C with nights around 18.7°C. Rain is rare — about 0.2 wet days and 2.4mm across the month. Comfortable conditions for being outdoors all day.
September in Bellflower averages a daily high of 28.2°C with nights around 17.9°C. Rain is rare — about 0.6 wet days and 2.3mm across the month. Comfortable conditions for being outdoors all day.
October in Bellflower averages a daily high of 25.7°C with nights around 15.1°C. Rain is rare — about 2.2 wet days and 13.3mm across the month. Comfortable conditions for being outdoors all day.
November in Bellflower averages a daily high of 22.7°C with nights around 11.1°C. Expect roughly 3 wet days totalling 19.3mm. Comfortable conditions for being outdoors all day.
December in Bellflower averages a daily high of 19.5°C with nights around 8.3°C. Expect roughly 5.4 wet days totalling 56.7mm. Comfortable conditions for being outdoors all day.
Each month scores out of 100. It starts at 100 and loses points for daytime highs outside a 20–27°C band, for wet days, and for nights below 2°C. Nothing else is weighted in — no crowd data, no prices, no opinion. Bellflower peaks at 99.
Based on 30 years of records, April–November scores highest for comfort in Bellflower, balancing daytime temperature against rainfall.
August is the warmest, averaging a daily high of 28.9°C.
February is the wettest, averaging 73.7mm of rain across roughly 6.2 wet days.
December is the coolest month, with average daily highs around 19.5°C.