The remote server returned an error: (400) Bad Request.The remote server returned an error: (400) Bad Request. 2025 Compare Climate & Weather: Allyn, WA vs Signal Mountain, TN

2025 Compare Climate & Weather:
Allyn, WA vs Signal Mountain, TN

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Highlights

On average, there are 209 sunny days per year in Signal Mountain. Allyn averages 136 sunny days per year. The US average is 205 sunny days.

Signal Mountain, Tennessee gets 57.2 inches of rain, on average, per year. Allyn, Washington gets 54.3 inches of rain, on average, per year. The US average is 38.1 inches of rain per year.

Signal Mountain averages 3.2 inches of snow per year. Allyn averages 2.3 inches of snow per year. The US average is 27.8 inches of snow per year.

Weather Highlights

Signal Mountain, Tennessee
Summer High: the July high is around 84.2 degrees
Winter Low: the January low is 26
Rain: averages 57.2 inches of rain a year
Snow: averages 3.2 inches of snow a year

Allyn, Washington
Summer High: the July high is around 75.8 degrees
Winter Low: the January low is 35.4
Rain: averages 54.3 inches of rain a year
Snow: averages 2.3 inches of snow a year

BestPlaces Comfort Index
Signal Mountain

The annual BestPlaces Comfort Index for Signal Mountain is 7.4 (10=best), which means it is more comfortable than most places in Tennessee.

7.4 / 10
September, May and June are the most pleasant months in Signal Mountain, while January and December are the least comfortable months.

Allyn

The annual BestPlaces Comfort Index for Allyn is 7.2 (10=best), which means it is more comfortable than most places in Washington.

7.2 / 10
August, July and September are the most pleasant months in Allyn, while December and January are the least comfortable months.

Average Monthly High / Low (°F)
MonthAllyn, WASignal Mountain, TN
January46° / 35°45° / 26°
February49° / 35°48° / 29°
March54° / 37°58° / 37°
April59° / 40°67° / 45°
May66° / 45°74° / 53°
June70° / 50°81° / 62°
July76° / 53°84° / 65°
August76° / 54°84° / 64°
September71° / 49°78° / 57°
October60° / 44°68° / 46°
November50° / 39°58° / 38°
December45° / 35°47° / 30°
Hot, Freezing, Rainy, Snowy Days: Allyn / Signal Mountain
MonthHot DaysFreezing DaysRainy DaysSnowy Days
January0 / 09 / 2219 / 90 / 1
February0 / 09 / 1715 / 90 / 1
March0 / 05 / 1118 / 100 / 0
April0 / 02 / 315 / 90 / 0
May0 / 00 / 012 / 100 / 0
June0 / 10 / 010 / 100 / 0
July1 / 30 / 05 / 100 / 0
August1 / 40 / 05 / 90 / 0
September0 / 10 / 07 / 70 / 0
October0 / 00 / 313 / 70 / 0
November0 / 04 / 820 / 90 / 0
December0 / 010 / 1918 / 101 / 0
August is the hottest month for Allyn with an average high temperature of 76.2°, which ranks it as cooler than most places in Washington. In Allyn, there are 4 comfortable months with high temperatures in the range of 70-85°. The most pleasant months of the year for Allyn are August, July and September.

July is the hottest month for Signal Mountain with an average high temperature of 84.2°, which ranks it as one of the coolest places in Tennessee. In Signal Mountain, there are 5 comfortable months with high temperatures in the range of 70-85°. The most pleasant months of the year for Signal Mountain are September, June and May.
December has the coldest nighttime temperatures for Allyn with an average of 34.6°. This is warmer than most places in Washington.

January has the coldest nighttime temperatures for Signal Mountain with an average of 26.0°. This is about average compared to other places in Tennessee.

In Allyn, there are 2.2 days annually when the high temperature is over 90°, which is cooler than most places in Washington.

In Signal Mountain, there are 7.9 days annually when the high temperature is over 90°, which is one of the coolest places in Tennessee.

In Allyn, there are 38.8 days annually when the nighttime low temperature falls below freezing, which is warmer than most places in Washington.

In Signal Mountain, there are 84.1 days annually when the nighttime low temperature falls below freezing, which is about average compared to other places in Tennessee.

In Allyn, there are 0.0 days annually when the nighttime low temperature falls below zero°, which is about average compared to other places in Washington.

In Signal Mountain, there are 0.3 days annually when the nighttime low temperature falls below zero°, which is warmer than most places in Tennessee.

December is the wettest month in Allyn with 9.1 inches of rain, and the driest month is July with 0.8 inches. The wettest season is Spring with 43% of yearly precipitation and 7% occurs in Autumn, which is the driest season. The annual rainfall of 54.3 inches in Allyn means that it is wetter than most places in Washington.


December is the wettest month in Signal Mountain with 5.9 inches of rain, and the driest month is October with 3.5 inches. The wettest season is Spring with 28% of yearly precipitation and 22% occurs in Autumn, which is the driest season. The annual rainfall of 57.2 inches in Signal Mountain means that it is wetter than most places in Tennessee.

November is the rainiest month in Allyn with 19.8 days of rain, and August is the driest month with only 5.0 rainy days. There are 156.6 rainy days annually in Allyn, which is about average compared to other places in Washington. The rainiest season is Spring when it rains 33% of the time and the driest is Autumn with only a 13% chance of a rainy day.

July is the rainiest month in Signal Mountain with 10.1 days of rain, and October is the driest month with only 6.7 rainy days. There are 105.9 rainy days annually in Signal Mountain, which is less rainy than most places in Tennessee. The rainiest season is Autumn when it rains 27% of the time and the driest is Winter with only a 21% chance of a rainy day.

An annual snowfall of 2.3 inches in Allyn means that it is less snowy than most places in Washington.

An annual snowfall of 3.2 inches in Signal Mountain means that it is less snowy than most places in Tennessee.
December is the snowiest month in Allyn with 0.9 inches of snow, and 3 months of the year have significant snowfall.

January is the snowiest month in Signal Mountain with 1.0 inches of snow, and 4 months of the year have significant snowfall.

DID YOU KNOW?

Many people confuse Weather and Climate, but they are different. Weather refers to the conditions of the atmosphere over a short period of time, while Climate refers to the conditions of the atmosphere over a long period of time.

Weather, more specifically, refers to how the atmosphere behaves and its effects on life and human activities. Most people think of Weather in terms of what can be observed: temperature, humidity, precipitation, and cloudy/sunny conditions. Weather conditions constantly change on a minute-to-minute basis.

Climate is a record of the average weather conditions for a given place over a long period of time, often referred to as Climate Normals. A 30-year period of record is a common requirement to be considered a Climate Normal.

Reviews for Allyn    2 Reviews
Jill · Sherman Oaks, CA
re:
Over 16 years ago

Hi. I'd like to know if you still feel the same way about living in Broomfield. I went there this past July to check it out (along with Lafayette, Boulder (can't  More

   |    Reply
NC For Me · Apex, NC
re:
Over 16 years ago

Apex is perfect for what you are looking for. It's close enough to Raleigh, Durham, Chapel Hill to find a job and Cary the next town over, is a little more expensive but  More

   |    Reply

Start Your Review of Allyn

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Reviews for Signal Mountain    2 Reviews
Jill · Sherman Oaks, CA
re:
Over 16 years ago

Hi. I'd like to know if you still feel the same way about living in Broomfield. I went there this past July to check it out (along with Lafayette, Boulder (can't  More

   |    Reply
NC For Me · Apex, NC
re:
Over 16 years ago

Apex is perfect for what you are looking for. It's close enough to Raleigh, Durham, Chapel Hill to find a job and Cary the next town over, is a little more expensive but  More

   |    Reply

Start Your Review of Signal Mountain

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Zips In Allyn, Washington
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