Average Summer Sunshine by USA State

The tables below pull together numbers on the amount of sunshine that each US state usually has during summer. There's information by state on the season's averages for percent, hours and days of sun.

The % Sun number measures the percentage of time between sunrise and sunset that sunshine reaches the ground. Total Hours is the average number of sunny hours a place normally has in summer. Clear Days is the average number of days in summer when cloud covers at most 30 percent of the sky during daylight hours.

All of the numbers are averages of several decades of weather measurements. The summer totals are based on data for the months of June, July and August.

Since so few weather stations measure sunshine, meaningful state-wide averages aren't available. Instead, the tables list a place for each state that represents the state's typical amount of sunshine.

Average amount of sunshine in summer
State	Place	% Sun	Total Hours	Clear Days
Alabama	Birmingham	62	806	19
Alaska	Anchorage	43	729	9
Arizona	Tucson	84	1075	43
Arkansas	Fort Smith	71	926	34
California	San Diego	65	842	37
Colorado	Grand Junction	79	1045	42
Connecticut	Hartford	61	836	19
Delaware	Wilmington	–	–	25
Florida	Tampa	64	793	12
Georgia	Macon	69	882	22
Hawaii	Honolulu	76	–	21
Idaho	Boise	82	1110	51
Illinois	Peoria	68	896	26
Indiana	Indianapolis	66	856	24
Iowa	Des Moines	70	948	29
Kansas	Wichita	73	956	35
Kentucky	Louisville	66	855	26

State	Place	% Sun	Total Hours	Clear Days
Louisiana	New Orleans	61	783	20
Maine	Portland	62	809	23
Maryland	Baltimore	63	832	26
Massachusetts	Boston	64	865	23
Michigan	Lansing	66	893	23
Minnesota	Minneapolis	69	980	27
Mississippi	Jackson	68	855	26
Missouri	Springfield	69	896	32
Montana	Helena	72	1003	33
Nebraska	Lincoln	71	939	34
Nevada	Reno	90	1209	60
New Hampshire	Concord	60	832	21
New Jersey	Atlantic City	62	814	22
New Mexico	Albuquerque	78	1009	42
New York	Syracuse	60	797	22
North Carolina	Greensboro	62	790	21
North Dakota	Bismarck	70	989	30

State	Place	% Sun	Total Hours	Clear Days
Ohio	Columbus	60	755	20
Oklahoma	Oklahoma City	78	1012	39
Oregon	Portland	64	920	30
Pennsylvania	Harrisburg	67	884	22
Rhode Island	Providence	62	828	22
South Carolina	Columbia	67	829	23
South Dakota	Huron	73	1025	33
Tennessee	Nashville	64	819	26
Texas	Dallas	72	935	41
Utah	Salt Lake City	82	1094	47
Vermont	Burlington	61	830	16
Virginia	Richmond	68	887	21
Washington	Seattle	62	862	24
West Virginia	Beckley	–	–	10
Wisconsin	Madison	65	868	25
Wyoming	Lander	74	1004	37

Average Summer Sunshine by State

References

More American State Weather Information