We average 47-57 "nice days" each year when 1995-2020 data is averaged & interpolated.

"Nice days" are defined as:

1.  Highs 70-84

2.  Dew point max being less than 65

3.  No rainfall

4.  An average mostly clear to partly cloudy sky.

5.  Average sustained winds of less than 8 mph & gusts less than 15 mph.

Highest number is Lafayette to Covington & least amount is Morocco to Winamac to Rochester.

The average number at the Purdue Airport is 55.  This is similar to the number of "nice days" at Boston, St. Louis, Dallas, Washington D.C., Salt Lake City & Shreveport, Louisiana.

Highest number of nice days of any U.S. cities are in California.  Some cities in southern California average 205 "nice days" per year!

The highest number of "nice days" in the eastern half of the U.S. are in Georgia, South Carolina & then to northern Florida.

Greatest number of nice days in our viewing area:

We typically see the greatest number of "nice days" in September viewing area-wide.

It varies over different parts of the country, but for the U.S. as a whole, September has the greatest number of such days.

Greatest number of nice days in different regions of the country:

September:  Maine to New Jersey to most of Indiana to Iowa, northern Missouri, Nebraska, Wyoming, Montana, Idaho, Washington & Oregon & Utah to the Dakotas.

October:  Far southern Indiana, Kentucky to Arkansas to D.C. to North Carolina, northern Georgia, Alabama, Mississippi & Louisiana to northern Texas to New Mexico to Nevada & over central California.

November:  Southeastern South Carolina, southern Georgia, northern Florida, southern Alabama to central Texas.

January-February:  Central & southern Florida, far southern Texas, southeastern California, Hawaii

April:  South-central Alabama & far northwestern Florida Panhandle

July-August:  Northern Minnesota, northern Wisconsin, UP of Michigan, northern New England, Pacific Northwest, much of Alaska, coastal southern California

June:  Central Alaska

Months that do not make the ranking in any climate sites in the U.S.:

March, May, December

Region of the U.S. with the least number of nice days per year:

All but a small portion of central Alaska.  Southwestern, western & northern Alaska will see none in many years.  Barrow, Alaska averages one every 20 years.

Region of the Lower 48 with the least number of nice days per year:

Northern Montana, western North & South Dakota to the Panhandle of Nebraska with numbers as low as 28.