Originally Posted by chicagoslick
I lived in Rapid City, SD for a few years while stationed at Ellsworth AFB. It was pretty darn cold there. Also thought they recorded the largest temperature swing in a 24Hr period (70deg to -60deg) back in 1990. By the way I am from Southern California originally and when I went to South Dakota it was a huge shock.....
I have run the numbers on Rapid City for the year 2013. Compared to southern CA pleasant its no doubt a way colder city. I can only imagine the shock! The mood swings (daily temperature swings) happen too. Something about those winds coming off the black hills. But comparing Rapid City to Minneapolis what you'll find is that there are way more days above 40 degrees. Jan - Mar 2013 here is the data.
DAYS ABOVE 40 DEGREES 2013
Jan - 16 days
Feb - 17 days
Mar - 23 days
Dec - 11 days
Jan - 0 days
Feb - 0 days
Mar - 5 days
Dec - 1 day
Look at the two charts I attached and you'll see what the entire year looks like.
BTW..I've run charts for Chicago (should be similar to Indy) but have not done one for Indianapolis. I'll post for Chicago when I get the chance.