What is today's weather forecast for Union, WA?

Today's forecast for Union shows a low of 44 degrees Fahrenheit. Rain, mainly before 4am.

What is the 7-day weather forecast for Union, WA?

The 7-day forecast for Union shows highs from 41 to 52 degrees and lows from 36 to 44 degrees Fahrenheit. Expect precipitation on 8 days with chances of 20% or higher.

Will it rain in Union, WA this week?

Yes, rain is possible in Union this week. Precipitation chances: Monday (80% chance), Tuesday (100% chance), Wednesday (90% chance), Thursday (100% chance), Friday (50% chance), Saturday (50% chance), Sunday (50% chance), Monday (50% chance).

How accurate is the Union weather forecast?

WeatherForYou provides highly accurate Union 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.

Union, WA Weather Forecast and Current Conditions

WEATHER ALERTS - Special Weather Statement - Wind Advisory

Current Conditions From Nearby Station

Switch to Metric Units

45°F
Feels Like 45°F

Humidity 88% Dew Point 42°F Wind S 1 MPH Gusts 3 Barometer 30.04 in.

Report from a MADIS/MESONET weather station 5.3 mi. SSE of central Union
at 2:15 AM Tue, Dec 16, 2025

Point Forecast at a Glance

MonDec 15

80%

TueDec 16

100%

WedDec 17

90%

ThuDec 18

100%

FriDec 19

50%

SatDec 20

50%

SunDec 21

50%

Jump to detailed forecast ↓

7-Day Temperature Trend

Week Ahead Summary

High temperatures remain relatively stable through the week, ranging from 41°F to 52°F. Unsettled weather expected with rain on most days, including one day with snow.

Climate Context

Temperatures are expected to be near normal for this time of year, with highs around 45°F and lows around 34°F.

This Date in Weather History

1941 - Only two women were employed by the Weather Bureau. By 1945, more than 900 women are employed by the Weather Bureau as observers and forecasters, as a result of filling positions of men during World War II. Eleven days after Pearl Harbor, the Army requested that all weather broadcasts be discontinued. The fear was that the enemy would use this information to plan an attack on the United States.

Union, WA 7 Day Weather Forecast Details

Monday Dec 15

Night: Rain, mainly before 4am. Low around 44. South southwest wind around 9 mph, with gusts as high as 20 mph. Chance of precipitation is 80%. New precipitation amounts of less than a tenth of an inch possible.

Tuesday Dec 16

Day: Rain. Patchy fog before 10am, then patchy fog after 11am. High near 52. Breezy, with a south southwest wind 15 to 24 mph, with gusts as high as 32 mph. Chance of precipitation is 100%. New precipitation amounts between three quarters and one inch possible.

Night: Rain and possibly a thunderstorm before midnight, then showers likely and possibly a thunderstorm between midnight and 1am, then a chance of rain after 1am. Patchy fog before 11pm. Low around 40. Windy, with a west southwest wind 30 to 36 mph, with gusts as high as 46 mph. Chance of precipitation is 100%. New rainfall amounts between three quarters and one inch possible.

Wednesday Dec 17

Day: Rain. High near 45. West southwest wind 11 to 20 mph, with gusts as high as 26 mph. Chance of precipitation is 90%. New precipitation amounts between a tenth and quarter of an inch possible.

Night: Rain. Low around 39. South wind around 10 mph. Chance of precipitation is 90%. New precipitation amounts between a quarter and half of an inch possible.

Thursday Dec 18

Day: Rain. High near 47. Chance of precipitation is 100%. New precipitation amounts between three quarters and one inch possible.

Night: Rain. Low around 36. Chance of precipitation is 90%.

Friday Dec 19

Day: Rain. Cloudy, with a high near 42.

Night: Rain. Cloudy, with a low around 36.

Saturday Dec 20

Day: Rain. Cloudy, with a high near 41.

Night: Rain likely, possibly mixed with snow. Mostly cloudy, with a low around 36.

Sunday Dec 21

Day: Rain likely, possibly mixed with snow. Mostly cloudy, with a high near 42.

Night: Rain, possibly mixed with snow. Mostly cloudy, with a low around 38.

Monday Dec 22

Day: Rain likely, possibly mixed with snow. Mostly cloudy, with a high near 43.

About Union, WA

Union or Union City is a small census-designated place in Mason County, Washington, United States. The community lies along the southern shore of the Great Bend of the Hood Canal, near the mouth of the Skokomish River, which flows from the nearby Olympic Mountains. The U.S. Census reported a population of 631 inhabitants in the 2010 census. The ZIP Code for Union is 98592. State Route 106 is the main route through Union, leading to Belfair farther north, and Potlatch and US Highway 101 to the south.

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