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Current weather in Coulee Dam is overcast clouds.

Where can I find the hourly weather forecast for Coulee Dam?

This page shows hourly weather forecast for Coulee Dam, including temperature, wind, precipitation, humidity and cloud cover.

Is the weather forecast for Coulee Dam updated regularly?

Weather data for Coulee Dam is updated regularly with the latest available observations and forecasts.

Now · 11:11 AM

Coulee Dam Weather & Hourly Forecast

United States · Washington · 99116

71°F

Overcast

Feels like: 70°F

💧 Humidity 40% 🌡 Pressure 29.71 inHg 💨 Wind 5 mph 👁 Visibility 6.2 mi ☁ Clouds 98% ☀️ UV index 3.7 · Moderate 🌅 Sunrise 6:14 AM 🌇 Sunset 7:37 PM

Hourly Forecast for Coulee Dam

Today

12:00 PM

Overcast

71° 💧 None 💨 5 mph H 40%29.71 inHg

3:00 PM

Overcast

79° 💧 None 💨 14 mph H 24%29.62 inHg

6:00 PM

Overcast

80° 💧 None 💨 13 mph H 18%29.59 inHg

9:00 PM

Partly cloudy night

66° 💧 None 💨 7 mph H 28%29.62 inHg

Tomorrow

12:00 AM

Overcast night

60° 💧 None 💨 5 mph H 35%29.65 inHg

3:00 AM

Overcast night

56° 💧 None 💨 6 mph H 53%29.65 inHg

6:00 AM

Light rain

52° 💧 0.02 in 💨 10 mph H 72%29.68 inHg

9:00 AM

Overcast

59° 💧 0.01 in 💨 14 mph H 59%29.74 inHg

12:00 PM

Overcast

64° 💧 None 💨 14 mph H 52%29.74 inHg

3:00 PM

Overcast

70° 💧 None 💨 18 mph H 27%29.65 inHg

6:00 PM

Overcast

70° 💧 None 💨 18 mph H 26%29.65 inHg

9:00 PM

Overcast night

59° 💧 0.02 in 💨 13 mph H 53%29.71 inHg

Thursday

12:00 AM

Moderate rain

57° 💧 0.30 in 💨 5 mph H 88%29.74 inHg

3:00 AM

Light rain

56° 💧 0.04 in 💨 9 mph H 80%29.74 inHg

6:00 AM

Overcast night

56° 💧 None 💨 6 mph H 79%29.74 inHg

9:00 AM

Mostly cloudy

60° 💧 None 💨 9 mph H 63%29.77 inHg

Today

12:00 PM

Overcast

71° 💧 None 💨 5 mph H 40%29.71 inHg

1:00 PM

Overcast

73° 💧 None 💨 6 mph H 36%29.71 inHg

2:00 PM

Overcast

77° 💧 None 💨 9 mph H 31%29.68 inHg

3:00 PM

Overcast

79° 💧 None 💨 14 mph H 24%29.62 inHg

4:00 PM

Overcast

81° 💧 None 💨 15 mph H 20%29.59 inHg

5:00 PM

Overcast

82° 💧 None 💨 13 mph H 18%29.59 inHg

6:00 PM

Overcast

80° 💧 None 💨 13 mph H 18%29.59 inHg

7:00 PM

Mostly cloudy

75° 💧 None 💨 11 mph H 20%29.59 inHg

8:00 PM

Partly cloudy night

70° 💧 None 💨 9 mph H 26%29.59 inHg

9:00 PM

Partly cloudy night

66° 💧 None 💨 7 mph H 28%29.62 inHg

10:00 PM

Mostly cloudy night

63° 💧 None 💨 5 mph H 30%29.62 inHg

11:00 PM

Mostly cloudy night

62° 💧 None 💨 6 mph H 31%29.62 inHg

Tomorrow

12:00 AM

Overcast night

60° 💧 None 💨 5 mph H 35%29.65 inHg

1:00 AM

Overcast night

59° 💧 None 💨 6 mph H 37%29.65 inHg

2:00 AM

Overcast night

58° 💧 None 💨 7 mph H 44%29.65 inHg

3:00 AM

Overcast night

56° 💧 None 💨 6 mph H 53%29.65 inHg

4:00 AM

Overcast night

54° 💧 None 💨 9 mph H 56%29.65 inHg

5:00 AM

Overcast night

53° 💧 None 💨 10 mph H 61%29.68 inHg

6:00 AM

Light rain

52° 💧 0.01 in 💨 10 mph H 72%29.68 inHg

7:00 AM

Light rain

53° 💧 0.01 in 💨 8 mph H 70%29.68 inHg

8:00 AM

Overcast

56° 💧 None 💨 13 mph H 64%29.71 inHg

9:00 AM

Overcast

59° 💧 None 💨 14 mph H 59%29.74 inHg

10:00 AM

Overcast

62° 💧 None 💨 13 mph H 58%29.74 inHg

11:00 AM

Light rain

63° 💧 0.01 in 💨 13 mph H 59%29.77 inHg

12:00 PM

Overcast

64° 💧 None 💨 14 mph H 52%29.74 inHg

1:00 PM

Overcast

67° 💧 None 💨 14 mph H 39%29.74 inHg

2:00 PM

Overcast

69° 💧 None 💨 16 mph H 30%29.68 inHg

3:00 PM

Overcast

70° 💧 None 💨 18 mph H 27%29.65 inHg

4:00 PM

Overcast

71° 💧 None 💨 18 mph H 26%29.65 inHg

5:00 PM

Overcast

71° 💧 None 💨 17 mph H 27%29.62 inHg

6:00 PM

Overcast

70° 💧 None 💨 18 mph H 26%29.65 inHg

7:00 PM

Overcast

66° 💧 None 💨 18 mph H 37%29.65 inHg

8:00 PM

Overcast night

63° 💧 None 💨 7 mph H 42%29.68 inHg

9:00 PM

Overcast night

59° 💧 None 💨 13 mph H 53%29.71 inHg

10:00 PM

Overcast night

57° 💧 None 💨 2 mph H 57%29.68 inHg

11:00 PM

Light rain

55° 💧 0.02 in 💨 6 mph H 66%29.71 inHg

Thursday

12:00 AM

Moderate rain

57° 💧 0.14 in 💨 5 mph H 88%29.74 inHg

1:00 AM

Moderate rain

57° 💧 0.09 in 💨 6 mph H 86%29.74 inHg

2:00 AM

Moderate rain

56° 💧 0.06 in 💨 9 mph H 84%29.74 inHg

3:00 AM

Light rain

56° 💧 0.03 in 💨 9 mph H 80%29.74 inHg

4:00 AM

Light rain

56° 💧 0.01 in 💨 6 mph H 74%29.74 inHg

5:00 AM

Overcast night

55° 💧 None 💨 6 mph H 78%29.74 inHg

6:00 AM

Overcast night

56° 💧 None 💨 6 mph H 79%29.74 inHg

7:00 AM

Overcast

55° 💧 None 💨 5 mph H 81%29.74 inHg

8:00 AM

Mostly cloudy

57° 💧 None 💨 6 mph H 73%29.74 inHg

9:00 AM

Mostly cloudy

60° 💧 None 💨 9 mph H 63%29.77 inHg

10:00 AM

Mostly cloudy

61° 💧 None 💨 10 mph H 58%29.77 inHg

11:00 AM

Mostly cloudy

62° 💧 None 💨 12 mph H 54%29.77 inHg

12:00 PM

Overcast

63° 💧 None 💨 11 mph H 51%29.77 inHg

1:00 PM

Light rain

63° 💧 0.00 in 💨 14 mph H 51%29.77 inHg

2:00 PM

Overcast

64° 💧 None 💨 11 mph H 46%29.77 inHg

3:00 PM

Light rain

64° 💧 0.01 in 💨 8 mph H 46%29.77 inHg

4:00 PM

Overcast

67° 💧 None 💨 7 mph H 41%29.74 inHg

5:00 PM

Overcast

67° 💧 None 💨 8 mph H 38%29.74 inHg

6:00 PM

Partly cloudy

67° 💧 None 💨 7 mph H 37%29.74 inHg

7:00 PM

Partly cloudy

65° 💧 None 💨 6 mph H 41%29.74 inHg

8:00 PM

Mostly cloudy night

62° 💧 None 💨 5 mph H 48%29.74 inHg

9:00 PM

Mostly cloudy night

60° 💧 None 💨 6 mph H 55%29.77 inHg

10:00 PM

Mostly cloudy night

60° 💧 None 💨 5 mph H 59%29.77 inHg

11:00 PM

Mostly cloudy night

58° 💧 None 💨 4 mph H 65%29.80 inHg

Friday

12:00 AM

Light rain

57° 💧 0.01 in 💨 3 mph H 69%29.80 inHg

1:00 AM

Light rain

56° 💧 0.02 in 💨 4 mph H 74%29.80 inHg

2:00 AM

Light rain

56° 💧 0.02 in 💨 4 mph H 76%29.80 inHg

3:00 AM

Light rain

55° 💧 0.00 in 💨 3 mph H 77%29.80 inHg

4:00 AM

Overcast night

55° 💧 None 💨 3 mph H 78%29.83 inHg

5:00 AM

Light rain

55° 💧 0.01 in 💨 3 mph H 80%29.83 inHg

6:00 AM

Light rain

55° 💧 0.01 in 💨 4 mph H 80%29.85 inHg

7:00 AM

Light rain

55° 💧 0.01 in 💨 4 mph H 82%29.88 inHg

8:00 AM

Light rain

56° 💧 0.01 in 💨 4 mph H 80%29.91 inHg

9:00 AM

Light rain

56° 💧 0.01 in 💨 6 mph H 76%29.91 inHg

10:00 AM

Light rain

58° 💧 0.00 in 💨 5 mph H 69%29.94 inHg

11:00 AM

Overcast

60° 💧 None 💨 5 mph H 62%29.94 inHg

12:00 PM

Overcast

62° 💧 None 💨 2 mph H 54%29.94 inHg

1:00 PM

Overcast

64° 💧 None 💨 1 mph H 46%29.94 inHg

2:00 PM

Mostly cloudy

66° 💧 None 💨 3 mph H 43%29.91 inHg

3:00 PM

Mostly cloudy

67° 💧 None 💨 5 mph H 42%29.91 inHg

4:00 PM

Mostly cloudy

66° 💧 None 💨 5 mph H 41%29.94 inHg

5:00 PM

Overcast

66° 💧 None 💨 5 mph H 40%29.94 inHg

6:00 PM

Overcast

66° 💧 None 💨 4 mph H 41%29.94 inHg

7:00 PM

Mostly cloudy

65° 💧 None 💨 3 mph H 44%29.94 inHg

8:00 PM

Mostly cloudy night

62° 💧 None 💨 2 mph H 49%29.97 inHg

9:00 PM

Mostly cloudy night

63° 💧 None 💨 0 mph H 48%29.97 inHg

10:00 PM

Mostly cloudy night

63° 💧 None 💨 3 mph H 47%30.00 inHg

11:00 PM

Mostly cloudy night

61° 💧 None 💨 4 mph H 51%30.00 inHg

Saturday

12:00 AM

Clear night

59° 💧 None 💨 5 mph H 54%30.00 inHg

1:00 AM

Clear night

58° 💧 None 💨 5 mph H 57%30.00 inHg

2:00 AM

Clear night

57° 💧 None 💨 5 mph H 60%30.00 inHg

3:00 AM

Clear night

55° 💧 None 💨 5 mph H 63%30.00 inHg

4:00 AM

Clear night

55° 💧 None 💨 5 mph H 66%30.00 inHg

5:00 AM

Clear night

53° 💧 None 💨 5 mph H 68%30.03 inHg

6:00 AM

Clear night

53° 💧 None 💨 6 mph H 71%30.03 inHg

7:00 AM

Sunny

53° 💧 None 💨 5 mph H 71%30.03 inHg

8:00 AM

Sunny

56° 💧 None 💨 5 mph H 63%30.03 inHg

9:00 AM

Sunny

60° 💧 None 💨 6 mph H 55%30.00 inHg

10:00 AM

Sunny

65° 💧 None 💨 7 mph H 46%30.00 inHg

11:00 AM

Sunny

69° 💧 None 💨 7 mph H 37%29.97 inHg

In Coulee Dam and, more broadly, across the state of Washington: The rest of the day will see mostly cloudy skies with mild temperatures ranging from 54 to 66 degrees Fahrenheit. There is a high likelihood of rain, with an estimated accumulation of around 0.06 inches. Winds will be light, coming from the west at a maximum of 8 mph, with gusts reaching up to 11 mph. Folks should be prepared for the possibility of rain during the afternoon hours, so carrying an umbrella or rain gear is advisable. Overall, it will be a relatively cool and damp day with occasional light breezes.

15-Day Weather Outlook for Coulee Dam

TomorrowTomorrow

Light rain 71°/52° 💧 0.04 in 💨 18 mph

Thursday, Sep 3Thu Sep 3

Moderate rain 67°/55° 💧 0.34 in 💨 14 mph

Friday, Sep 4Fri Sep 4

Light rain 66°/55° 💧 0.10 in 💨 6 mph

Saturday, Sep 5Sat Sep 5

Sunny 74°/53° 💧 None 💨 7 mph

Sunday, Sep 6Sun Sep 6

Mostly cloudy 80°/58° 💧 None 💨 5 mph

Monday, Sep 7Mon Sep 7

Light rain 69°/60° 💧 0.05 in 💨 9 mph

Tuesday, Sep 8Tue Sep 8

Mostly cloudy 76°/55° 💧 None 💨 7 mph

Wednesday, Sep 9Wed Sep 9

Partly cloudy 75°/56° 💧 None 💨 9 mph

Thursday, Sep 10Thu Sep 10

Partly cloudy 72°/53° 💧 None 💨 11 mph

Friday, Sep 11Fri Sep 11

Sunny 72°/52° 💧 None 💨 6 mph

Saturday, Sep 12Sat Sep 12

Sunny 76°/53° 💧 None 💨 7 mph

Sunday, Sep 13Sun Sep 13

Partly cloudy 76°/55° 💧 None 💨 5 mph

Monday, Sep 14Mon Sep 14

Partly cloudy 79°/57° 💧 None 💨 6 mph

Tuesday, Sep 15Tue Sep 15

Overcast 79°/59° 💧 None 💨 5 mph

Wednesday, Sep 16Wed Sep 16

Overcast 82°/59° 💧 None 💨 10 mph

TEMPERATURE OUTLOOK

Temperature & Weather Trends in Coulee Dam

Vertical axis: °F · Color based on temperature

AIR QUALITY FORECAST

Air Quality Forecast for Coulee Dam

Hourly forecast · Updated every 2 hours

Fair

Nearest forecast value 12:00 PM

PM2.5 Fine particles Good 2,5µg/m³

Microscopic particles that can penetrate deep into the lungs. Elevated concentrations can especially affect children, older adults and people with respiratory conditions.

PM10 Particulate matter Good 4,6µg/m³

Includes dust, pollen and other airborne particles. High concentrations may irritate the respiratory system.

O₃ Ozone Fair 71,3µg/m³

Ground-level ozone can irritate the eyes and respiratory system when concentrations are elevated.

NO₂ Nitrogen dioxide Good 1,9µg/m³

A gas emitted mainly by traffic and some industrial activity. High exposure can affect respiratory health.

Air quality is acceptable for most people.

UV & HEALTH

UV, Sun & Health Outlook in Coulee Dam

Maximum daily UV Today, tomorrow and the following day show the maximum UV index forecast for each day.

0–2 Low 3–5 Moderate 6–7 High 8–10 Very high 11+ Extreme

Today UV 5,4Moderate 🙂Fair

Tomorrow UV 4,3Moderate 🙂Fair

Thursday UV 4,1Moderate 🙂Fair

Friday UV 4,7Moderate 😐Moderate

Saturday UV 6,0High 🙂Fair

Sunday UV 6,0High —Unavailable

Monday UV 4,0Moderate —Unavailable

Hourly UV index today

12:00 PMUV 4,7 1:00 PMUV 5,4 2:00 PMUV 4,6 3:00 PMUV 3,5 4:00 PMUV 2,2 5:00 PMUV 1,2 6:00 PMUV 0,5 7:00 PMUV 0,0

Today's weather health advice Open today's recommendations.

Moderate UV risk

Sunglasses and sun protection are recommended for prolonged exposure.

Acceptable air quality

Air quality is acceptable for most people. Very sensitive people may want to reduce prolonged exertion.

Comfortable temperature conditions

Temperatures should feel comfortable for most people, with no particular heat or cold precautions needed.

Good conditions for outdoor activities

Outdoor activities can generally be enjoyed normally, with sun protection adjusted to the UV level.

WIND OUTLOOK

Hourly Wind Forecast for Coulee Dam

Vertical axis: mph · Horizontal axis: hours

Sustained wind Max gusts

Internal PR simulation: 3.54 Population: 1,595

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Forecast data for Coulee Dam were last refreshed today at 11:11 AM. The current forecast period extends through 03/09/2026 at 9:00 AM. Weather, air-quality and UV-index data are provided through WEATHER-INFO.COM. Forecasts are produced automatically from the latest available data and are subject to periodic technical checks. This service is intended for general weather information.