Lake Havasu City
Arizona, USA
Long-term weather forecast
Long-term weather forecast

September weather forecast and Climate
Lake Havasu City, AZ

September is the tail of the summer season in Lake Havasu City, and the weather is usually hot. The temperatures scale down a bit as compared to the summer, and the average ranges between 75°F (23.9°C) to 101°F (38.3°C).
The days register about 11 hours of sunlight, but the intensity of the ultraviolet rays of the sun tapers down a little. Nights are usually warm and rarely drop below 70°F (21.1°C).
Light summer clothing is apt to wear in September, and air-conditioners run untiringly in September as they do in the entire summer.
  • The average high temperature in September: 38.4°C

The warmest month (with the highest average high temperature) is July (42.9°C).
The month with the lowest average high temperature is December (17.2°C).

  • The average low temperature in September: 24.1°C

The month with the highest average low temperature is July (29.2°C).
The coldest month (with the lowest average low temperature) is December (6.1°C).

  • The average rainfall in September: 9.1mm

The wettest month (with the highest rainfall) is January (19.3mm).
The driest month (with the lowest rainfall) is June (0.3mm).

  • The average rainfall days in September: 2 days

Months with the highest number of rainy days are March and August (4 days).
Months with the lowest number of rainy days are May and June (1 days).

  • The average daylight in September: 12h

Months with the longest days are May, June and July (Average daylight: 14h).
Months with shortest days are January, November and December (Average daylight: 10h).

  • The average sunshine in September: 11h

Months with most sunshine are May and June (Average sunshine: 13h).
Months with least sunshine are January, November and December (Average sunshine: 8).

  • The average UV index in September: 8

The month with the highest UV index is July (UV index 11).
The month with the lowest UV index is December (UV index 2).