Worst Cases (UNCLASSIFIED)

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I was asked to model for the worst cases coldest and hottest. In the
continental U.S.

I'm thinking Minot North Dakota, and Shreveport Louisiana.

For hot, I was thinking hot and humid.

Any good (bad) places for a 8760 model for the two extremes?

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Jeurek's picture
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If you are meaning a weather city that displays both extremes, try
Kansas City. We are -2 db winter and 96/76 summer, with extremes that
have gone below and above that, respectively.

Obviously we are not as cold as Minot and not as hot as Shreveport, but
I wouldn't think too many places can claim a 98 degree annual range.

Good luck,

Gary Schrader

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I think you are onto something with the Dakotas. My best guess would be to
simply model a continental climate such as Bismarck ND since the summer's
are very hot/humid and winter's are very cold. The design temperatures have
a difference of around 110 degrees.

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I was looking for two different locations.

Hottest City
Coldest City

I agree about KC being the worst of both, I live in Omaha which is about the
same.

Jeurek's picture
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If you're talking dry heat, the hottest temperature ever recorded in
North America was in Death Valley, California:

http://www.ncdc.noaa.gov/oa/climate/globalextremes.html

NICK CATON, E.I.T.

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Might look by Climate Zones, then. Miami is in Climate Zone 1, and Minot
is in 7. Not sure what other cities are in 7. (that have TMY2 or TMY3
weather stations at least...)

Good luck,

Gary Schrader

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90.1-2007 Table D has a table of cites with their 1% design conditions as well as HDD65 and CDD50.
I would guess the Coldest City is International Falls, MN (-29F heating with 83F cooling for a 112F range)
In our extreme studies, we have used a hot & humid location and as well as a hot & dry location.

The ASHRAE Fundamentals CD has even more detailed info but as a table per station format it is harder to compare across stations.

Paul Riemer

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Hottest: Yuma, AZ

Reason: The annual mean temperature is above 73 deg F AND weather file available

Coldest: Duluth, MN

Reason: The annual mean temperature is below 40 deg F AND weather file available

Gaurav Mehta, LEED(r) AP BD+C

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