Historic Average temperatures and snow fall amounts

[tawa]

Getting back on the trail At Pen Mar State Park on March 29th and heading north one state at a time.
Could someone please advise on how I might find the historic average temps and snow fall amounts for PA and state heading north?
Would it also be broken down into the pass 5 and 10 yrs as well.
Here in IN the temps are all over the board this yr.
Today it was 31 and snowing hard and by mid week it is suppose to be in the mid 70's!! Crazy stuff!
Thanks for your help.

[Hatchet_1697]

Try this. https://www.wunderground.com/history/


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[Hatchet_1697]

No historical WX, but also useful: https://www.atweather.org


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[Hatchet_1697]

NOAA is a good source too: https://www.climate.gov/maps-data/da...ode-data-table


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[Hatchet_1697]

One more thing, you lose an average of 3.5 degrees Fahrenheit for every 1,000 feet of elevation you gain. So when looking at historical WX for a town near the trail that is at a lower altitude, you’ll need to figure out the altitude difference between it and the trail and subtract 3.5 degrees per 1000’ of difference (if you want a more accurate estimate).


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[peakbagger]

The prior posters observation is important to factor in. On much of the AT, the weather stations are at airportsand towns down in valleys along the ridge line so the weather records do not really reflect the actual conditions a hiker may encounter on the ridgeline. Winds are also going to be higher. A fairly interesting (but extreme) example of the drop in temps with elevation in the on the Mt Washigton Observatory website https://www.mountwashington.org/expe...onditions.aspx

The days are still short in March so overnight radiational cooling factors in, it get gets cold quick once the sun sets.

This was quite noticeable one year in April when we hiked the Blue Ridge Parkway, spring down below late winter up high.

[Slo-go'en]

Plus averages are deceiving. It's possible to get lows much, much lower then the average. On the bright side, those lows don't last more than a night or two.

NOAA is predicting higher then normal temps for this spring and spring will likely start early this year, but March and early April has volatile weather. The only question is how rainy will it be and that we won't know until be it gets closer to the end of March.

Another factor is there have been some bad storms this winter which knocked down a lot of trees. Starting early before the trail can be cleaned up adds a level of difficultly. Might be a good idea to bring a small folding saw along to help clean up some of the mess.