What is the weather in Great Falls right now?

Current weather in Great Falls is moderate rain.

Where can I find the hourly weather forecast for Great Falls?

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

Is the weather forecast for Great Falls updated regularly?

Weather data for Great Falls is updated regularly with the latest available observations and forecasts.

Now · 12:32 AM

Great Falls Weather & Hourly Forecast

United States · Virginia · 22066

71°F

Moderate rain

Feels like: 72°F

💧 Humidity 91% 🌡 Pressure 29.97 inHg 💨 Wind 12 mph 👁 Visibility 6.2 mi ☁ Clouds 89% ☀️ UV index 0.0 · Low 🌅 Sunrise 6:40 AM 🌇 Sunset 7:36 PM

Hourly Forecast for Great Falls

Today

1:00 AM

Moderate rain

71° 💧 0.15 in 💨 12 mph H 91%29.97 inHg

4:00 AM

Light rain

72° 💧 0.02 in 💨 3 mph H 93%29.94 inHg

7:00 AM

Mostly cloudy

72° 💧 None 💨 4 mph H 93%29.94 inHg

10:00 AM

Sunny

78° 💧 None 💨 7 mph H 70%29.94 inHg

1:00 PM

Sunny

80° 💧 None 💨 9 mph H 49%29.91 inHg

4:00 PM

Light rain

84° 💧 0.01 in 💨 5 mph H 56%29.85 inHg

7:00 PM

Overcast

79° 💧 None 💨 8 mph H 58%29.83 inHg

10:00 PM

Overcast night

77° 💧 None 💨 5 mph H 72%29.91 inHg

Tomorrow

1:00 AM

Overcast night

75° 💧 None 💨 4 mph H 79%29.88 inHg

4:00 AM

Partly cloudy night

72° 💧 None 💨 3 mph H 84%29.85 inHg

7:00 AM

Mostly cloudy

72° 💧 None 💨 5 mph H 88%29.85 inHg

10:00 AM

Overcast

75° 💧 0.02 in 💨 4 mph H 69%29.88 inHg

1:00 PM

Light rain

68° 💧 0.01 in 💨 7 mph H 72%29.88 inHg

4:00 PM

Overcast

84° 💧 None 💨 9 mph H 58%29.80 inHg

7:00 PM

Light rain

77° 💧 0.09 in 💨 5 mph H 80%29.80 inHg

10:00 PM

Light rain

73° 💧 0.07 in 💨 3 mph H 91%29.83 inHg

Today

1:00 AM

Moderate rain

71° 💧 0.12 in 💨 12 mph H 91%29.97 inHg

2:00 AM

Light rain

71° 💧 0.02 in 💨 4 mph H 92%29.97 inHg

3:00 AM

Light rain

72° 💧 0.02 in 💨 3 mph H 92%29.97 inHg

4:00 AM

Light rain

72° 💧 0.02 in 💨 3 mph H 93%29.94 inHg

5:00 AM

Light rain

72° 💧 0.01 in 💨 4 mph H 94%29.94 inHg

6:00 AM

Overcast night

72° 💧 None 💨 3 mph H 93%29.91 inHg

7:00 AM

Mostly cloudy

72° 💧 None 💨 4 mph H 93%29.94 inHg

8:00 AM

Mostly cloudy

73° 💧 None 💨 4 mph H 89%29.94 inHg

9:00 AM

Sunny

75° 💧 None 💨 6 mph H 82%29.97 inHg

10:00 AM

Sunny

78° 💧 None 💨 7 mph H 70%29.94 inHg

11:00 AM

Sunny

80° 💧 None 💨 8 mph H 61%29.97 inHg

12:00 PM

Sunny

79° 💧 None 💨 8 mph H 54%29.94 inHg

1:00 PM

Sunny

80° 💧 None 💨 9 mph H 49%29.91 inHg

2:00 PM

Sunny

76° 💧 None 💨 10 mph H 44%29.91 inHg

3:00 PM

Partly cloudy

87° 💧 None 💨 9 mph H 40%29.88 inHg

4:00 PM

Light rain

84° 💧 0.01 in 💨 5 mph H 56%29.85 inHg

5:00 PM

Mostly cloudy

84° 💧 None 💨 10 mph H 44%29.83 inHg

6:00 PM

Mostly cloudy

82° 💧 None 💨 7 mph H 53%29.85 inHg

7:00 PM

Overcast

79° 💧 None 💨 8 mph H 58%29.83 inHg

8:00 PM

Overcast night

79° 💧 None 💨 8 mph H 59%29.88 inHg

9:00 PM

Overcast night

78° 💧 None 💨 7 mph H 68%29.88 inHg

10:00 PM

Overcast night

77° 💧 None 💨 5 mph H 72%29.91 inHg

11:00 PM

Overcast night

76° 💧 None 💨 4 mph H 77%29.91 inHg

Tomorrow

12:00 AM

Overcast night

76° 💧 None 💨 4 mph H 78%29.91 inHg

1:00 AM

Overcast night

75° 💧 None 💨 4 mph H 79%29.88 inHg

2:00 AM

Mostly cloudy night

75° 💧 None 💨 4 mph H 81%29.88 inHg

3:00 AM

Mostly clear night

73° 💧 None 💨 4 mph H 83%29.88 inHg

4:00 AM

Partly cloudy night

72° 💧 None 💨 3 mph H 84%29.85 inHg

5:00 AM

Partly cloudy night

72° 💧 None 💨 3 mph H 86%29.88 inHg

6:00 AM

Mostly cloudy night

72° 💧 None 💨 4 mph H 87%29.85 inHg

7:00 AM

Mostly cloudy

72° 💧 None 💨 5 mph H 88%29.85 inHg

8:00 AM

Mostly cloudy

73° 💧 None 💨 5 mph H 82%29.88 inHg

9:00 AM

Overcast

74° 💧 None 💨 5 mph H 73%29.88 inHg

10:00 AM

Overcast

75° 💧 None 💨 4 mph H 69%29.88 inHg

11:00 AM

Light rain

72° 💧 0.01 in 💨 4 mph H 73%29.88 inHg

12:00 PM

Light rain

68° 💧 0.01 in 💨 4 mph H 76%29.88 inHg

1:00 PM

Light rain

68° 💧 0.01 in 💨 7 mph H 72%29.88 inHg

2:00 PM

Overcast

63° 💧 None 💨 10 mph H 57%29.85 inHg

3:00 PM

Overcast

84° 💧 None 💨 8 mph H 56%29.83 inHg

4:00 PM

Overcast

84° 💧 None 💨 9 mph H 58%29.80 inHg

5:00 PM

Overcast

81° 💧 None 💨 7 mph H 68%29.80 inHg

6:00 PM

Overcast

81° 💧 None 💨 6 mph H 67%29.80 inHg

7:00 PM

Light rain

77° 💧 0.02 in 💨 5 mph H 80%29.80 inHg

8:00 PM

Light rain

73° 💧 0.04 in 💨 5 mph H 90%29.80 inHg

9:00 PM

Light rain

72° 💧 0.03 in 💨 5 mph H 91%29.83 inHg

10:00 PM

Light rain

73° 💧 0.01 in 💨 3 mph H 91%29.83 inHg

11:00 PM

Light rain

72° 💧 0.02 in 💨 3 mph H 91%29.83 inHg

Sunday

12:00 AM

Light rain

71° 💧 0.04 in 💨 5 mph H 92%29.83 inHg

1:00 AM

Overcast night

71° 💧 None 💨 4 mph H 92%29.85 inHg

2:00 AM

Overcast night

71° 💧 None 💨 4 mph H 92%29.85 inHg

3:00 AM

Overcast night

71° 💧 None 💨 4 mph H 92%29.83 inHg

4:00 AM

Overcast night

70° 💧 None 💨 4 mph H 93%29.83 inHg

5:00 AM

Overcast night

69° 💧 None 💨 5 mph H 93%29.83 inHg

6:00 AM

Overcast night

67° 💧 None 💨 6 mph H 90%29.85 inHg

7:00 AM

Overcast

66° 💧 None 💨 6 mph H 87%29.85 inHg

8:00 AM

Overcast

65° 💧 None 💨 6 mph H 85%29.88 inHg

9:00 AM

Overcast

66° 💧 None 💨 7 mph H 82%29.91 inHg

10:00 AM

Overcast

68° 💧 None 💨 7 mph H 79%29.94 inHg

11:00 AM

Overcast

71° 💧 None 💨 8 mph H 71%29.94 inHg

12:00 PM

Overcast

75° 💧 None 💨 9 mph H 65%29.94 inHg

1:00 PM

Light rain

75° 💧 0.01 in 💨 10 mph H 66%29.94 inHg

2:00 PM

Light rain

76° 💧 0.01 in 💨 9 mph H 63%29.94 inHg

3:00 PM

Light rain

78° 💧 0.01 in 💨 8 mph H 59%29.94 inHg

4:00 PM

Mostly cloudy

79° 💧 None 💨 8 mph H 53%29.94 inHg

5:00 PM

Mostly cloudy

78° 💧 None 💨 9 mph H 52%29.97 inHg

6:00 PM

Mostly cloudy

75° 💧 None 💨 7 mph H 62%29.97 inHg

7:00 PM

Light rain

72° 💧 0.00 in 💨 8 mph H 69%30.00 inHg

8:00 PM

Light rain

71° 💧 0.01 in 💨 7 mph H 77%30.03 inHg

9:00 PM

Light rain

69° 💧 0.01 in 💨 7 mph H 81%30.03 inHg

10:00 PM

Mostly cloudy night

67° 💧 None 💨 6 mph H 85%30.06 inHg

11:00 PM

Partly cloudy night

67° 💧 None 💨 5 mph H 85%30.06 inHg

Monday

12:00 AM

Partly cloudy night

66° 💧 None 💨 5 mph H 87%30.06 inHg

1:00 AM

Partly cloudy night

65° 💧 None 💨 4 mph H 88%30.09 inHg

2:00 AM

Mostly clear night

64° 💧 None 💨 3 mph H 89%30.09 inHg

3:00 AM

Partly cloudy night

64° 💧 None 💨 2 mph H 89%30.09 inHg

4:00 AM

Partly cloudy night

64° 💧 None 💨 1 mph H 88%30.09 inHg

5:00 AM

Mostly cloudy night

64° 💧 None 💨 1 mph H 88%30.12 inHg

6:00 AM

Partly cloudy night

63° 💧 None 💨 3 mph H 90%30.12 inHg

7:00 AM

Partly cloudy

62° 💧 None 💨 3 mph H 91%30.15 inHg

8:00 AM

Partly cloudy

65° 💧 None 💨 3 mph H 86%30.18 inHg

9:00 AM

Sunny

68° 💧 None 💨 4 mph H 77%30.18 inHg

10:00 AM

Sunny

72° 💧 None 💨 4 mph H 66%30.18 inHg

11:00 AM

Sunny

75° 💧 None 💨 3 mph H 57%30.18 inHg

12:00 PM

Sunny

78° 💧 None 💨 3 mph H 50%30.18 inHg

1:00 PM

Sunny

80° 💧 None 💨 3 mph H 44%30.15 inHg

2:00 PM

Mostly sunny

81° 💧 None 💨 4 mph H 41%30.12 inHg

3:00 PM

Overcast

81° 💧 None 💨 5 mph H 39%30.12 inHg

4:00 PM

Overcast

80° 💧 None 💨 6 mph H 41%30.12 inHg

5:00 PM

Overcast

79° 💧 None 💨 4 mph H 42%30.12 inHg

6:00 PM

Overcast

78° 💧 None 💨 3 mph H 47%30.12 inHg

7:00 PM

Overcast

74° 💧 None 💨 5 mph H 55%30.15 inHg

8:00 PM

Overcast night

71° 💧 None 💨 4 mph H 59%30.15 inHg

9:00 PM

Overcast night

69° 💧 None 💨 2 mph H 63%30.15 inHg

10:00 PM

Overcast night

68° 💧 None 💨 1 mph H 66%30.18 inHg

11:00 PM

Mostly cloudy night

67° 💧 None 💨 1 mph H 68%30.18 inHg

Tuesday

12:00 AM

Mostly cloudy night

66° 💧 None 💨 2 mph H 70%30.18 inHg

In Great Falls and, more broadly, across the state of Virginia: The evening will feature a mix of sun and clouds, with temperatures remaining warm, ranging from around 80 to 86 degrees Fahrenheit. Light south winds will prevail, blowing at up to 5 mph, with gusts reaching 10 mph. There is a possibility of some light rain, with an estimated accumulation of about 0.02 inches and a maximum probability of 57%. Overall, expect a warm night with mild breezes and occasional cloud cover. Brief periods of rain could occur, but significant rainfall is unlikely. The atmospheric conditions suggest a relatively stable evening, with temperatures staying comfortably warm through the next few hours.

15-Day Weather Outlook for Great Falls

Friday, Sep 4Fri Sep 4

Moderate rain 87°/72° 💧 0.21 in 💨 12 mph

TomorrowTomorrow

Light rain 84°/63° 💧 0.15 in 💨 10 mph

Sunday, Sep 6Sun Sep 6

Light rain 79°/65° 💧 0.08 in 💨 10 mph

Monday, Sep 7Mon Sep 7

Mostly sunny 81°/64° 💧 None 💨 4 mph

Tuesday, Sep 8Tue Sep 8

Mostly cloudy 84°/62° 💧 None 💨 5 mph

Wednesday, Sep 9Wed Sep 9

Partly cloudy 90°/68° 💧 None 💨 8 mph

Thursday, Sep 10Thu Sep 10

Light rain 91°/70° 💧 0.13 in 💨 11 mph

Friday, Sep 11Fri Sep 11

Overcast 77°/65° 💧 None 💨 12 mph

Saturday, Sep 12Sat Sep 12

Sunny 74°/54° 💧 None 💨 9 mph

Sunday, Sep 13Sun Sep 13

Partly cloudy 78°/55° 💧 None 💨 7 mph

Monday, Sep 14Mon Sep 14

Partly cloudy 88°/61° 💧 None 💨 9 mph

Tuesday, Sep 15Tue Sep 15

Moderate rain 93°/68° 💧 0.33 in 💨 9 mph

Wednesday, Sep 16Wed Sep 16

Light rain 96°/73° 💧 0.02 in 💨 9 mph

Thursday, Sep 17Thu Sep 17

Partly cloudy 90°/70° 💧 None 💨 7 mph

Friday, Sep 18Fri Sep 18

Light rain 87°/72° 💧 0.16 in 💨 7 mph

TEMPERATURE OUTLOOK

Temperature & Weather Trends in Great Falls

Vertical axis: °F · Color based on temperature

AIR QUALITY FORECAST

Air Quality Forecast for Great Falls

Hourly forecast · Updated every 2 hours

Good

Nearest forecast value 1:00 AM

PM2.5 Fine particles Good 6,8µg/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 8,0µg/m³

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

O₃ Ozone Good 22,6µg/m³

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

NO₂ Nitrogen dioxide Good 3,5µg/m³

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

Air quality is favorable for outdoor activities.

UV & HEALTH

UV, Sun & Health Outlook in Great Falls

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 6,7High 😊Good

Tomorrow UV 5,0Moderate 🙂Fair

Sunday UV 7,2High 🙂Fair

Monday UV 6,0High 🙂Fair

Tuesday UV 6,0High —Unavailable

Wednesday UV 7,0High —Unavailable

Thursday UV 7,0High —Unavailable

Hourly UV index today

7:00 AMUV 0,0 8:00 AMUV 0,5 9:00 AMUV 1,4 10:00 AMUV 3,3 11:00 AMUV 4,8 12:00 PMUV 6,1 1:00 PMUV 6,7 2:00 PMUV 6,3 3:00 PMUV 5,6 4:00 PMUV 2,6 5:00 PMUV 1,2 6:00 PMUV 0,7

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

Strong UV exposure

Protect exposed skin with SPF 30+ sunscreen, wear sunglasses, and try to limit direct midday sun.

Good air quality

Air quality is good and outdoor activities can be enjoyed normally.

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 Great Falls

Vertical axis: mph · Horizontal axis: hours

Sustained wind Max gusts

Internal PR simulation: 4.48 Population: 15,228

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Forecast data for Great Falls were last refreshed today at 12:32 AM. The current forecast period extends through 05/09/2026 at 10:00 PM. 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.