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Monthly Sunshine Hours Summary
Data last updated 05/17/12 07:25 AM.
DetailSummary

Sunshine Hours
DateJanFebMarAprMayJunJulAugSepOctNovDecYear
2012265.0 25.5 hours more than the January average.269.5 31.9 hours more than the February average.251.7 26.5 hours less than the March average.199.7 82.9 hours less than the April average.185.5* 129.1 hours less than the May average.---------------------1171.4* 2,283.5 hours less than the yearly average.
2011263.5 24.0 hours more than the January average.256.4 18.8 hours more than the February average.307.7 29.5 hours more than the March average.343.4 60.8 hours more than the April average.382.1 67.5 hours more than the May average.378.2 4.2 hours more than the June average.378.5 3.3 hours more than the July average.359.8 1.4 hours more than the August average.300.9* 73.5 hours more than the September average.284.0* 3.8 hours more than the October average.262.1* 6.1 hours more than the November average.251.6 20.5 hours more than the December average.3768.2* 313.3 hours more than the yearly average.
2010190.0 49.5 hours less than the January average.186.8 50.8 hours less than the February average.275.2 3.0 hours less than the March average.304.7 22.1 hours more than the April average.376.2 61.6 hours more than the May average.369.8 4.2 hours less than the June average.372.0 3.3 hours less than the July average.357.0 1.4 hours less than the August average.311.5 84.1 hours more than the September average.284.9 4.7 hours more than the October average.261.3 5.3 hours more than the November average.239.3 8.2 hours more than the December average.3528.7 73.8 hours more than the yearly average.
2009------------------------69.9* 157.5 hours less than the September average.271.8 8.4 hours less than the October average.244.5 11.5 hours less than the November average.202.3 28.8 hours less than the December average.788.5* 2,666.4 hours less than the yearly average.
 
Max265.0 269.5 307.7 343.4 382.1 378.2 378.5 359.8 311.5 284.9 262.1 251.6 3768.2
Avg239.5 237.6 278.2 282.6 314.6 374.0 375.3 358.4 227.4 280.2 256.0 231.1 3454.9
Min190.0 186.8 251.7 199.7 185.5 369.8 372.0 357.0 69.9 271.8 244.5 202.3 788.5
 
Color Key
< 30.0 30.0 - 60.0 60.0 - 90.0 90.0 - 120.0 120.0 - 150.0 150.0 - 180.0 180.0 - 210.0 210.0 - 240.0 240.0 - 270.0 270.0 - 300.0 300.0 - 330.0 330.0 - 360.0360.0>
* denotes incomplete data for the month/year.

Sunshine hours is the amount of time that the solar energy being received is at least 75 percent of the maximum possible for that day and time.