Welcome to City-Data.com Forum!
U.S. CitiesCity-Data Forum Index
Go Back   City-Data Forum > U.S. Forums > California > San Francisco - Oakland
 [Register]
Please register to participate in our discussions with 2 million other members - it's free and quick! Some forums can only be seen by registered members. After you create your account, you'll be able to customize options and access all our 15,000 new posts/day with fewer ads.
View detailed profile (Advanced) or search
site with Google Custom Search

Search Forums  (Advanced)
Reply Start New Thread
 
Old 04-13-2011, 10:53 AM
 
3,472 posts, read 5,265,479 times
Reputation: 3206

Advertisements

I would include San Rafael and Corte Madera in the warm category, as they average about the same as San Jose. And I agree about pulling back on the hot category all the way to Fairfield. It seems your dividing lines define the western start of the "warm" boundary as approximately 80 degrees and the start of the "hot" boundary as approximately 90 degrees on average. Personally, I would add a "cold" boundary that includes much of SF, Daly City, Pacifica, etc and run it right along the coast up to the 70 degree boundary. You really can't compare San Mateo and Daly CIty's summers, for example.
Reply With Quote Quick reply to this message

 
Old 04-13-2011, 10:55 AM
 
3,472 posts, read 5,265,479 times
Reputation: 3206
Whoops, just saw the redistricted map. Just fix San Rafael/Corte Madera as "warm" and you got it. although I almost think it would be a warm "island" in that microclimate, as the area between northern San Rafael and Novato is cooler than central and southern SR and CM. SR averages in the low 80s in summer.
Reply With Quote Quick reply to this message
 
Old 04-13-2011, 10:59 AM
 
Location: Madison, WI
1,044 posts, read 2,768,789 times
Reputation: 984
Nice map. I know this is supposed to cover primarily the Bay Area [then again it does reach Sacramento], but it would be great if the coverage could be extended a bit south to reach Santa Cruz. In particular, I'm interested in knowing roughly which parts of the Santa Cruz mountains are moderated by ocean air. Is it sufficient to live south/west of Summit/Skyline?
Reply With Quote Quick reply to this message
 
Old 04-13-2011, 05:22 PM
 
Location: Escondido, CA
1,504 posts, read 6,152,719 times
Reputation: 886
Sorry, but the revised map is even "wronger" north of the Bay than the original map.

Average July highs:

going north on 101 :
San Rafael: 82
Petaluma: 82
Santa Rosa: 83
Healdsburg: 89
Cloverdale: 92

going east on 80:
Napa: 82
Fairfield: 89
Vacaville: 95

elsewhere:
Concord: 88
Walnut Creek: 88
Livermore: 90

Berkeley: 70
Newark: 77
San Jose: 82

San Francisco (Richmond): 63
San Francisco (airport): 71

Santa Cruz: 74
Reply With Quote Quick reply to this message
 
Old 04-13-2011, 05:43 PM
 
Location: Los Altos Hills, CA
36,659 posts, read 67,539,821 times
Reputation: 21244
Quote:
Originally Posted by esmith143 View Post
Sorry, but the revised map is even "wronger" north of the Bay than the original map.

Average July highs:

going north on 101 :
San Rafael: 82
Petaluma: 82
Santa Rosa: 83
Healdsburg: 89
Cloverdale: 92

going east on 80:
Napa: 82
Fairfield: 89
Vacaville: 95

elsewhere:
Concord: 88
Walnut Creek: 88
Livermore: 90

Berkeley: 70
Newark: 77
San Jose: 82

San Francisco (Richmond): 63
San Francisco (airport): 71

Santa Cruz: 74


So I think I got the 'cool' and 'cold' areas right.

Its the 'warm' and 'hot' that still eludes me.

I never thought the temperature difference in July between Santa Rosa and San Jose is only 1 degree??
Reply With Quote Quick reply to this message
 
Old 04-13-2011, 05:57 PM
 
Location: Escondido, CA
1,504 posts, read 6,152,719 times
Reputation: 886
I'd draw warm/hot boundaries like this



Quote:
I never thought the temperature difference in July between Santa Rosa and San Jose is only 1 degree??
San Jose is big. There's probably a difference of 5 degrees between east and west boundaries. The 82 F figure is for the airport area. Santa Rosa is considerably cooler at night.

BTW, all numbers are from here: http://www.wrcc.dri.edu/htmlfiles/ca/ca.max.html

Last edited by esmith143; 04-13-2011 at 06:20 PM..
Reply With Quote Quick reply to this message
 
Old 04-16-2011, 12:03 AM
 
Location: Sacramento, Placerville
2,511 posts, read 6,300,029 times
Reputation: 2260
If you want a good resource for climate zones get a copy of the Western Garden Book.

Sunset climate zones: San Francisco Bay Area and inland - Sunset.com
Reply With Quote Quick reply to this message
 
Old 04-16-2011, 10:49 AM
 
Location: Madison, WI
230 posts, read 409,012 times
Reputation: 69
Quote:
Originally Posted by KC6ZLV View Post
If you want a good resource for climate zones get a copy of the Western Garden Book.

Sunset climate zones: San Francisco Bay Area and inland - Sunset.com
that's a cool map. What a variety of zones. I was disappointed to hear from an acquaintance it's mostly dry as you go east... desert-like. Is there anywhere you don't have to water all summer?
Reply With Quote Quick reply to this message
 
Old 04-16-2011, 11:29 AM
 
Location: Oakland, CA
28,226 posts, read 36,883,248 times
Reputation: 28563
Quote:
Originally Posted by dmiller91 View Post
that's a cool map. What a variety of zones. I was disappointed to hear from an acquaintance it's mostly dry as you go east... desert-like. Is there anywhere you don't have to water all summer?
No, Mediterranean climate means we do not get any rain from about May - October/November. It is dry as a bone.
Reply With Quote Quick reply to this message
 
Old 04-17-2011, 04:32 AM
 
Location: Sacramento, Placerville
2,511 posts, read 6,300,029 times
Reputation: 2260
Quote:
Originally Posted by dmiller91 View Post
that's a cool map. What a variety of zones. I was disappointed to hear from an acquaintance it's mostly dry as you go east... desert-like. Is there anywhere you don't have to water all summer?
What does he mean by dry? What people think and perceive is very different from reality. There is no shortage of people living in San Jose or Livermore who think Sacramento has a "high desert" climate. We get more rain up here than both locations. The closest desert-like is the steppe (BSh) along I-5 south of about I-580. Sacramento has a warm-summer Mediterranean climate (Csa). It is actually very similar to Walnut Creek, except it is a little warmer during the summer and a little colder in the winter. Anyway, the steppe climate is a transition to a desert climate. Southern Fresno County along I-5 and most of the low elevations of Kern County are Bsh. That is probably what he is thinking of.


Back to the map and the Bay Area. That map takes elevations into account. If you look at it closely you can see zone 14 along I-280 between about Hwy 92 and Los Altos Hills. That is the same type of climate Walnut Creek has. That section of the freeway is elevated enough to be above the inversion many times, thus it is warmer. There is a section along it where it is noticeably warmer than anywhere else where the Bay is visible.

Last edited by KC6ZLV; 04-17-2011 at 04:44 AM..
Reply With Quote Quick reply to this message
Please register to post and access all features of our very popular forum. It is free and quick. Over $68,000 in prizes has already been given out to active posters on our forum. Additional giveaways are planned.

Detailed information about all U.S. cities, counties, and zip codes on our site: City-data.com.


Reply
Please update this thread with any new information or opinions. This open thread is still read by thousands of people, so we encourage all additional points of view.

Quick Reply
Message:


Settings
X
Data:
Loading data...
Based on 2000-2020 data
Loading data...

123
Hide US histogram


Over $104,000 in prizes was already given out to active posters on our forum and additional giveaways are planned!

Go Back   City-Data Forum > U.S. Forums > California > San Francisco - Oakland
Similar Threads

All times are GMT -6. The time now is 10:13 AM.

© 2005-2024, Advameg, Inc. · Please obey Forum Rules · Terms of Use and Privacy Policy · Bug Bounty

City-Data.com - Contact Us - Archive 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20, 21, 22, 23, 24, 25, 26, 27, 28, 29, 30, 31, 32, 33, 34, 35, 36, 37 - Top