Frost last night?

[Len Dennis]

We've never had frost in August but it appears we had it last night (Aug 27). But the temps right now (when I took the pic) were 10oC (~51oF) so I'm puzzled. There are forest fires on the West coast but thats 2700 miles away so I don't think it's ash.

I can't (easily) take the screens off the window.

 

[Jim Lampe]

Len, think it's time you and I move to the deep south or even Mexico...
I cringe at the very thought of this winter's forecast....
it's 56ºF (13ºC) now... and I'm FREEZING!!

 

[Bob Correll]

I'll guess ash at those temps.
The sun at sunrise this morning was the reddest I've ever seen, and apparently it's due to the wildfires.
http://www.abc17news.com/weather/smoke-from-wildfires-moving-into-midmissouri/34916482

 

[Rich Dahl]

Was 60 here at 5:30am, lovin it after all the heat and high humidity.

 

[BEWarre]

Im in Texas and its going to be hot for a while 100 today and 99 for hi's all weekend. I would gladly take 50 degrees.

 

[Len Dennis]

An hour later with the sun now in play, that frost is gone (but still in place where there is shadow). Don't think it's ash.

 

[Bob Correll]

"As the air temperature cools on a winter night and approaches the dew point, the moisture in the air will condense out of the air and on to solid objects. The surface temperature of an object must be freezing in order for frost to form."
http://www.awis.com/Misc/Fact_Sheets.htm

Turn your A/C off Len.

 

[Clint]

I've been dreaming of something deeper..................

still enjoying summer but looking forward to the winter

http://www.tetongravity.com/video/s...ne-got-skied...-in-august...-in-north-america

 

[Len Dennis]

I've been dreaming of something deeper..................

still enjoying summer but looking forward to the winter

http://www.tetongravity.com/video/s...ne-got-skied...-in-august...-in-north-america

Sure, on mountain tops that's not unusual in August. But not in Southern Ontario. Oh well, I'll worry about this later. At least I'm getting some (cayenne) peppers this year. But not habs. Lots of leaves and about half a dozen flowers but that's it.

 

[Enrico Brandizzi]

Here in Roma, Its nice 81F at 10:55 am.
Later we will shot 95F for sure.
Im tired enough about heat!

 

[T Waite]

The overnight low on Thursday for Georgetown Ontario was 12c, or 53F. That ain't frost.

I suggest those are wet spots from overnight condensation that are reflecting the sky from your angle. Note it's not on all of the shingles.