Warm
Average highs sit around 31°C, giving warm days by monthly-average standards.
September verdict
Excellent for holiday weather
Average highs sit around 31°C, giving warm days by monthly-average standards. Sunshine averages 12h per day, so bright days are a strong part of the month. Rainfall averages 11mm, which is relatively low for holiday planning.

Monthly averages
Temp
31°C
Rain
11mm
Sun
12h
Weather score
92
Excellent
Warm
Average highs sit around 31°C, giving warm days by monthly-average standards.
Drier
Rainfall averages 11mm, which is relatively low for holiday planning.
Bright
Sunshine averages 12h per day, so bright days are a strong part of the month.
Map
Compare Folsom, California, United States with nearby places by weather score, rain, sun, temperature, and swim conditions.
September31°C average high
September sits in the warmer part of the year, so midday sightseeing can feel heavier than in cooler months.
Warmest monthsJune to September
This stretch sets the upper range for average daytime heat.
September11mm average rain
September is one of Folsom's driest months, making outdoor days easier to plan than in wetter parts of the year.
Driest monthsMay to October
This is the drier part of the year, when outdoor plans usually need less weather flexibility.
September12 hours average sun
September is brighter than Folsom's yearly average, though the strongest sunshine usually sits closer to the peak months.
Brightest monthsMay to August
This stretch has the strongest sunshine in the monthly averages.
September92 weather score
September is one of Folsom's best weather-score months, combining the strongest overall balance in the yearly averages.
Best weather monthsJune to September
These months have the strongest weather score in the monthly averages.