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Old 12-06-2011, 02:02 AM
 
Location: The western periphery of Terra Australis
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I think especially in areas where the vegetation is primarily evergreen, the difference between spring and autumn/fall can be kind of marginal. They are both merely the transitions between summer and winter. I do think there is a bit of a difference here in Perth: the fronts tend to appear with regularity at the start of May, so most of Autumn is characterised by stable, high-pressure anti-cyclonic systems. 'Wintry' weather seems to drag on a bit longer here in the SW than in the SE. Stats show that I think believe September is cooler in Perth than Adelaide. Spring is a bit stormier and wetter, about equally cloudy but more unstable and cooler than autumn, but there's not a huge difference.
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Old 12-06-2011, 02:25 AM
 
Location: In transition
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Autumn and winter seem almost the same here.. spring seems a bit warmer but that could just be because I'm used to winter temperatures.. most of the vegetation is evergreen here but you do notice the autumn colours on the deciduous trees although not to the extent as you would in a place like Ontario or New England.
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Old 12-06-2011, 03:48 AM
 
Location: Yorkshire, England
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Spring and autumn are quite different here.
Spring = sunny spells and showers, long evenings, relatively big diurnal ranges, sunshine feeling relatively strong, higher chance of frosts/snow.

Autumn = more likely to be overcast, sun with little strength, early sunsets, long periods of rain possible, chance of gales, nights often not much cooler than days, fog possible.
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Old 12-06-2011, 04:53 AM
 
Location: Eastern Sydney, Australia
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In terms of rainfall/cloudiness, yes. Autumn is usually the best season for it whereas spring is the opposite though the last couple of spring seasons has put paid to that
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Old 12-06-2011, 08:49 AM
 
Location: The western periphery of Terra Australis
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I notice Mediterranean climates in particular tend to have more of a 'temperature lag', where summer starts a bit later and ends later, and winter drags on a little bit.
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Old 12-06-2011, 08:52 AM
 
Location: Leeds, UK
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Nope.

But, Spring is far more prone to snowy and cold outbreaks as well as heatwaves.

BTW, I consider spring as March, April and May and Autumn as September, October and November, it's easier that way.

Last edited by dunno what to put here; 12-06-2011 at 09:06 AM..
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Old 12-06-2011, 08:59 AM
 
Location: New York City
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Depends how you define 'spring' and 'fall', whether you use the astronomical definition or something else.

In general, in the Northeast, there is not a whole lot of difference. There is a bit of a seasonal lag (October is usually warmer than April, for example). Also temperatures fluctuate more wildly in the spring, usually. There are more rainy days in the spring although the total precipitation figures are almost the same. Fall days seem a bit sunnier although there spring days have more total sunshine due to longer days.
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Old 12-06-2011, 09:01 AM
 
Location: Waterloo, ON
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It depends. If you're talking about meteorological spring (March-May) and autumn (September-November), then Autumn is (much) warmer, mostly due to the lags. The last three November's barely saw any snow (probably less than 4 inches in total for the three years), while March tends to still be a very active month. For the last 10 years, September has been consistently warmer than the previous 30 year-average (1971-2000) for pretty much every year but one or two, while May tends to be below average.

If we're talking about the astronomical definition (solstices, equinoxes etc), then spring is actually warmer, since you exclude the first 21 days of March, and include the first 21 days of June in Spring. Likewise, you include most of December (which is usually still colder than March most of the years), and exclude most of September from Fall, so temperature dropped by quite a bit. Things vary from year to year, though it seems that, recently, autumn has been getting warmer and warmer while the reverse is true for spring >_<
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Old 12-06-2011, 09:02 AM
 
Location: Winterpeg
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Autumn is drier, spring has less uv index... spring is colder.
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Old 12-06-2011, 09:41 AM
 
Location: Vancouver, Canada
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The fall cool-down is notably more rapid than the spring warm-up, but otherwise the two are very similar. Actually even summer and winter are only marginally different in terms of appearances.

The seasons here are best marked by fruit. Winter is strawberry season, spring stone fruits like peaches and cherries, summer is watermelon and mango, fall is dates and pomegranetes.

Back in Victoria BC, springs and falls were rather distinct. Spring was cooler, cloudier, and drier, but greener than the fall. Victoria can be quite dry in summer, so often things weren't green again until the leaves were off the oaks. Fall was sunnier, warmer, but also wetter than spring.

Though I appreciated the early blossoms of Victoria, spring's cool often outstayed its welcome. On the other hand, pleasantly warm days happened as late as early November. There was a big lag.
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