What is today's weather forecast for Waterloo, OR?

Today's forecast for Waterloo shows a low of 42 degrees Fahrenheit. Partly cloudy, with a low around 42.

What is the 7-day weather forecast for Waterloo, OR?

The 7-day forecast for Waterloo shows highs from 48 to 59 degrees and lows from 38 to 48 degrees Fahrenheit. Expect precipitation on 5 days with chances of 20% or higher.

Will it rain in Waterloo, OR this week?

Yes, rain is possible in Waterloo this week. Precipitation chances: Sunday (40% chance), Monday (50% chance), Tuesday (50% chance), Wednesday (50% chance), Thursday (50% chance).

How accurate is the Waterloo weather forecast?

WeatherForYou provides highly accurate Waterloo forecasts using National Weather Service data and current conditions from the nearest available weather stations, often miles closer than regional airports, for the most precise local forecasts.

Waterloo, OR Weather Forecast and Current Conditions

Current Conditions From Nearby Local Station

Switch to Metric Units

46°F
Feels Like 46°F

Humidity 99% Dew Point 46°F Wind Calm Barometer 30.01 in.

Report from a personal weather station 4.2 mi. WSW of central Waterloo
at 1:49 AM Fri, Dec 12, 2025

Point Forecast at a Glance

ThuDec 11

FriDec 12

SatDec 13

SunDec 14

40%

MonDec 15

50%

TueDec 16

50%

WedDec 17

50%

Jump to detailed forecast ↓

7-Day Temperature Trend

Week Ahead Summary

High temperatures remain relatively stable through the week, ranging from 48°F to 59°F. Unsettled weather expected with rain likely on at least 4 days.

Climate Context

This week's forecast shows temperatures running 9°F above the historical average for December. Normal highs for this period are around 46°F with lows around 34°F.

This Date in Weather History

1960 - The first of three Middle Atlantic snowstorms produced a foot of snow at Baltimore MD. A pre-winter blizzard struck the northeastern U.S. producing wind gusts as high as 51 mph, along with 16 inches of snow at Nantucket MA, and 20 inches at Newark NJ.

Waterloo, OR 7 Day Weather Forecast Details

Thursday Dec 11

Night: Partly cloudy, with a low around 42. Calm wind.

Friday Dec 12

Day: Patchy fog before 11am. Otherwise, partly sunny, with a high near 55. Calm wind.

Night: Partly cloudy, with a low around 38. Calm wind.

Saturday Dec 13

Day: Mostly sunny, with a high near 56. Calm wind.

Night: Partly cloudy, with a low around 41. Light south southeast wind.

Sunday Dec 14

Day: A 40 percent chance of rain before 4pm. Mostly cloudy, with a high near 57.

Night: A 30 percent chance of rain after 10pm. Mostly cloudy, with a low around 46.

Monday Dec 15

Day: Rain. Cloudy, with a high near 59.

Night: Rain. Cloudy, with a low around 48.

Tuesday Dec 16

Day: Rain. Cloudy, with a high near 56.

Night: Rain. Cloudy, with a low around 39.

Wednesday Dec 17

Day: Rain. Cloudy, with a high near 48.

Night: Rain. Cloudy, with a low around 39.

Thursday Dec 18

Day: Rain. Cloudy, with a high near 51.

About Waterloo, OR

Waterloo is a city in Linn County, Oregon, United States. The population was 229 at the 2010 census. The city's name, a joking reference to the Battle of Waterloo, stemmed from a 19th-century court decision that settled a land dispute at Kees Mill along the South Santiam River. After the dispute ended, Kees Mill became known as Waterloo. The federal government established a post office at Waterloo on January 5, 1875. S. D. Granger was its first postmaster. The post office closed in 1974.

Content from Wikipedia, licensed under CC BY-SA 3.0.

How We Provide Better Local Weather

Current conditions: We use the nearest available station to your location - including professional MESONET/MADIS and local weather stations - often miles closer than regional airports.

Forecasts: National Weather Service point forecasts predict for your specific area, not broad regional zones, making them far more relevant to your location.

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