Get ready for summer! Officially, the season begins on Friday when the solstice arrives. This means that more of the sun’s rays are pointed toward the Northern Hemisphere. This will also be the weekend with the most daylight of any weekend in the year! On Friday, the sun will rise at 5:20 in the morning and not set until 8:36pm. This will give us 15 hours, 16 minutes, and 26 seconds of daylight to enjoy.
Compare that to the shortest day of 2013 which will arrive this December when we will only receive 9 hours and 5 minutes of daylight! Have I given you enough of a reason to make your outdoor plans for the weekend?
Well, if I have be ready for some extreme warmth. In fact, it looks like we could be seeing back-to-back 90s beginning this weekend. Quite a far cry from the upper 40s and lower 50s coming early Wednesday. If we dip into the 40s in Rockford, it would near the record for the date. But with the beginning of summer comes the serious heat this weekend. With high temperatures in the upper 80s and dewpoints in the 70s, heat index values will be in the 95-100° range!
On top of that, some scattered thunderstorms will be possible. Due to the 40% chance, and the fact that this far out I can’t assure that these will happen after the full daytime heating, I’m going to be a bit conservative with upper 80s. However, if the rain holds off until the afternoons or evenings, leaving the morning hours sunny, some lower to middle 90s will be possible! In other words, this is a HOT airmass! Welcome to summer 2013! -Eric
Posted under climate/climate change, heat wave, science, weather geek