2025 Compare Climate & Weather:
Mendon, UT vs Happy Valley, OR

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Highlights

On average, there are 142 sunny days per year in Happy Valley. Mendon averages 218 sunny days per year. The US average is 205 sunny days.

Happy Valley, Oregon gets 48.1 inches of rain, on average, per year. Mendon, Utah gets 17.8 inches of rain, on average, per year. The US average is 38.1 inches of rain per year.

Happy Valley averages 1.8 inches of snow per year. Mendon averages 52.7 inches of snow per year. The US average is 27.8 inches of snow per year.

Weather Highlights

Happy Valley, Oregon
Summer High: the July high is around 81.1 degrees
Winter Low: the January low is 36.5
Rain: averages 48.1 inches of rain a year
Snow: averages 1.8 inches of snow a year

Mendon, Utah
Summer High: the July high is around 88.6 degrees
Winter Low: the January low is 11.8
Rain: averages 17.8 inches of rain a year
Snow: averages 52.7 inches of snow a year

BestPlaces Comfort Index
Happy Valley

The annual BestPlaces Comfort Index for Happy Valley is 7.5 (10=best), which means it is more comfortable than most places in Oregon.

7.5 / 10
August, July and September are the most pleasant months in Happy Valley, while December and January are the least comfortable months.

Mendon

The annual BestPlaces Comfort Index for Mendon is 6.6 (10=best), which means it is less comfortable than most places in Utah.

6.6 / 10
June, September and August are the most pleasant months in Mendon, while January and December are the least comfortable months.

Today's Weather - Mendon, UT

6 AM PST

Sunny

39°F

DAYDESCRIPTIONHIGH / LOWWIND
TodaySunny66° / 40°N 2 to 6 mph
FridaySunny72° / 44°WNW 5 mph
SaturdaySunny77° / 50°SE 3 to 7 mph
SundayShowers And Thunderstorms Likely71° / 46°SSE 3 to 7 mph
MondayShowers And Thunderstorms Likely66° / 46°N 6 to 10 mph
TuesdayChance Rain Showers66° / 45°ENE 7 mph
WednesdayMostly Sunny then Slight Chance Showers And Thunderstorms70° / 46°NNE 2 to 6 mph
Today's Weather - Happy Valley, OR

6 AM PST

Sunny

45°F

DAYDESCRIPTIONHIGH / LOWWIND
TodaySunny80° / 50°NE 3 to 7 mph
FridaySunny then Rain Showers Likely70° / 49°SW 7 to 10 mph
SaturdayChance Rain Showers58° / 41°WNW 13 mph
SundayMostly Sunny65° / 41°NW 6 to 12 mph
MondaySunny73° / 47°NNE 3 to 10 mph
TuesdayMostly Sunny77° / 49°NNE 3 to 8 mph
WednesdayMostly Sunny then Slight Chance Rain Showers76° / 50°W 5 to 9 mph
Average Monthly High / Low (°F)
MonthMendon, UTHappy Valley, OR
January31° / 12°48° / 37°
February36° / 15°52° / 37°
March49° / 26°57° / 40°
April59° / 34°62° / 43°
May68° / 40°69° / 48°
June78° / 47°74° / 52°
July89° / 53°81° / 56°
August87° / 52°82° / 56°
September76° / 42°76° / 52°
October62° / 32°64° / 46°
November46° / 24°53° / 40°
December33° / 14°46° / 36°
Hot, Freezing, Rainy, Snowy Days: Mendon / Happy Valley
MonthHot DaysFreezing DaysRainy DaysSnowy Days
January0 / 030 / 810 / 198 / 0
February0 / 027 / 69 / 155 / 0
March0 / 024 / 29 / 184 / 0
April0 / 012 / 010 / 162 / 0
May0 / 14 / 010 / 130 / 0
June2 / 20 / 06 / 90 / 0
July14 / 50 / 05 / 40 / 0
August12 / 50 / 05 / 40 / 0
September1 / 22 / 06 / 70 / 0
October0 / 016 / 08 / 121 / 0
November0 / 025 / 39 / 194 / 0
December0 / 030 / 910 / 197 / 0
July is the hottest month for Mendon with an average high temperature of 88.6°, which ranks it as cooler than most places in Utah. In Mendon, there are 2 comfortable months with high temperatures in the range of 70-85°. The most pleasant months of the year for Mendon are June, September and August.

August is the hottest month for Happy Valley with an average high temperature of 81.6°, which ranks it as cooler than most places in Oregon. In Happy Valley, there are 4 comfortable months with high temperatures in the range of 70-85°. The most pleasant months of the year for Happy Valley are September, July and August.
January has the coldest nighttime temperatures for Mendon with an average of 11.8°. This is colder than most places in Utah.

December has the coldest nighttime temperatures for Happy Valley with an average of 35.5°. This is warmer than most places in Oregon.

In Mendon, there are 28.6 days annually when the high temperature is over 90°, which is cooler than most places in Utah.

In Happy Valley, there are 13.7 days annually when the high temperature is over 90°, which is about average compared to other places in Oregon.

In Mendon, there are 169.8 days annually when the nighttime low temperature falls below freezing, which is colder than most places in Utah.

In Happy Valley, there are 28.0 days annually when the nighttime low temperature falls below freezing, which is warmer than most places in Oregon.

In Mendon, there are 15.4 days annually when the nighttime low temperature falls below zero°, which is one of the coldest places in Utah.

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

May is the wettest month in Mendon with 2.2 inches of rain, and the driest month is July with 0.7 inches. The wettest season is Summer with 33% of yearly precipitation and 16% occurs in Autumn, which is the driest season. The annual rainfall of 17.8 inches in Mendon means that it is wetter than most places in Utah.


December is the wettest month in Happy Valley with 7.5 inches of rain, and the driest month is July with 0.7 inches. The wettest season is Spring with 41% of yearly precipitation and 7% occurs in Autumn, which is the driest season. The annual rainfall of 48.1 inches in Happy Valley means that it is wetter than most places in Oregon.

December is the rainiest month in Mendon with 10.4 days of rain, and July is the driest month with only 4.5 rainy days. There are 98.4 rainy days annually in Mendon, which is one of the rainiest places in Utah. The rainiest season is Spring when it rains 30% of the time and the driest is Autumn with only a 16% chance of a rainy day.

November is the rainiest month in Happy Valley with 19.0 days of rain, and August is the driest month with only 3.7 rainy days. There are 156.3 rainy days annually in Happy Valley, which is rainier than most places in Oregon. The rainiest season is Spring when it rains 34% of the time and the driest is Autumn with only a 11% chance of a rainy day.

An annual snowfall of 52.7 inches in Mendon means that it is snowier than most places in Utah.

An annual snowfall of 1.8 inches in Happy Valley means that it is less snowy than most places in Oregon.
December is the snowiest month in Mendon with 14.3 inches of snow, and 7 months of the year have significant snowfall.

December is the snowiest month in Happy Valley with 0.6 inches of snow, and 3 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 Mendon    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 Mendon

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Reviews for Happy Valley    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 Happy Valley

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Zips In Mendon, Utah
84325
Zips In HAPPY VALLEY, OREGON
97086, 97015
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