Summer stability map (hot, records, temp, day)

[Wildcat15]

Originally Posted by alex985

I would've guessed Lexington would have been higher than 5-10 F , though I suppose your extreme highs vary a lot year to year.

The extreme high has been from 88 in 1974 to 108 in 1936.

[Maxwell Senf]

Our summers are less stable than our winters. That makes sense. A typical summer here consists of highs in the upper 70s for a few weeks followed by a few days in the upper 90s to bring the average to 80/81. I suspect our median is lower than our mean. Basically the opposite of winters in the South.

[Adi from the Brunswicks]

Wish summers here were more unstable. I'd like more 70 F weather.

[Joe90]

A 10F difference for summer here, as well as a 10F difference for winter - a rather stable climate.

[mar89]

The same here. 10 F (6°C) both in summer and winter.

[Cambium]

Originally Posted by Joe90

A 10F difference for summer here, as well as a 10F difference for winter - a rather stable climate.

As discussing in the Winter Stability thread, you can't just use 1 extreme per year to get a result of stability. So be careful using that.

[nei]

Originally Posted by Cambium

As discussing in the Winter Stability thread, you can't just use 1 extreme per year to get a result of stability. So be careful using that.

I don't think it's a bad measure. Anyway for him for Joe90, having the coldest night of a year only 10°F below average sounds rather stable to me.

[nei]

The higher summer variability of the west coast vs much of the eastern US can be shown by this Amherst vs San Francisco graph I made a while ago. Plotted here are the number a days above a given temperature. San Francisco actually has a slightly higher record high than Amherst, but its summer high is much cooler. San Francisco has a long tail of much warmer than average day even if most days cluster around a rather mild average. Note it's for the whole year and on a log scale. But the high in the warmest month (September, so technically not summer) in San Francisco is 70°F while for Amherst it's 82°F. There are no days 20°F above average in Amherst.

[The East Frisian]

As for the maximums Summer is a bit more unstable here than winter- Average summer max is about 21°C / 70°F, highest annual summer maximum about 90°F, lowest summer maximum about 55°F (this only in early June), July and August usually don't see any temperatures below 16°C/60°F.

Minimums are quite stable though, average summer minimum is 14°C/ 58°F, highest summer minimum is about 20°C/ 68°F, lowest summer minimum about 8°C / 46°F in June but counting July and August alone its about 11°C/ 52°F.

[Mr.Sir]

Originally Posted by tommyFL

Just like the winter map, this time showing the difference between average annual extreme max temp and average high in the warmest month.

Not surprised at all, in SC (and for that matter the inland south in general) the stability has somewhat of an inverse ratio with the average temperature. If it weren't for the thunderstorms, summer would be very boring weather-wise. (although it's still much more boring than winter)