Outdoor Thermometers

11 years ago

last modified: 11 years ago

It got cold here last night with a hard frost, but just how cold I don't know. I wrapped my trees and placed Christmas lights on them to try and help. I have an Oregon Scientific wireless thermometer that always shows a higher and lower temp then what is reported by the news or even the local bank's reader board. I have read about calibrating thermometers but I don't know how to do this with the wireless sensor. The placement of the sensor is on a wooden post about 6 ft off of the ground and is shaded year round so I don't think it is due to any abnormal heating or cooling. Anyway my thermometer said it got down to 18 F last night, the bank said 23 and the news 24. As you can see the temps are all over the place with implications of a total crop loss to minimal with the wrapping on the trees. Do you guys recommend any thermometers? I will probably replace it with a large, low cost bulb thermometer and calibrate it with an ice bath, any thoughts?

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Comments (7)

Konrad..just outside of Edmonton Alberta
11 years ago
Yeah..I've been looking off and on for some kind of recording station,...but
just out at the nursery where it gets colder, couldn't find anything so far battery operated.
It's nice to have, perhaps take a couple of other cheap [regular] thermometer and compare.
The higher up your sensor, the warmer it will be, place it to the level of where the actual damage would be.
hoosierquilt USDA 10A Sunset 23 Vista CA
11 years ago
I use a Davis Weather Station that is battery powered and solar charged. For me in S. California with lots of sunshine, this works very well for me. It will transmit information to my computer, and I also have it hooked up to my wireless router to transmit data to the web. Extremely reliable, and the folks at Davis are very helpful with questions, set up, etc.

http://www.davis.com/Category/Weather_Stations/51740?referred_id=3561&mkwid=spX8zHhpn&pcrid=49924921565&kw=davis%20weather%20station&mt=e&pdv=c&gclid=CLb0uN6d3cQCFU6VfgodQL0Avw

Patty S.
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Konrad..just outside of Edmonton Alberta
11 years ago
WOW...not cheap but these still wouldn't' work for me, only goes to max.
minus 40, I get sometimes minus 45C -49F that's why I couldn't find anything!
ravenh2001
11 years ago
Konrad I rarely get below -30 f. Below that i think it is just " oh well next year". This year it was very few peaches , no apcot, few pears, but good apples,grapes some plumbs, and great blueberries, I hope the 11' of snow will make his year better.
Konrad..just outside of Edmonton Alberta
11 years ago
Sounds good Raven!
Could you please put your zone/hardiness # in your page so all of us
will know the conditions your'e dealing with. Yeah..good snow cover helps!
northshore3
11 years ago
Konrad a battery remote may not be the one you want. My springfield wireless stopped working around -4f last winter ---the several batteries I tried became to cold to function at around -4f--- this may be a problem with all batteries. Does anyone know of a battery unit that can go down to -40f?
Konrad..just outside of Edmonton Alberta
11 years ago
Yes, good for mentioning, I'm aware of that,.. on my trail cameras!
We might still be some years away with newer technology!
But...lets say to use one who runs on a 12 V car battery and solar cell, ..there should still be enough um-pf to power up a little monitor system.