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Current weather in American Falls is clear sky.

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

Is the weather forecast for American Falls updated regularly?

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

Now · 2:28 AM

American Falls Weather & Hourly Forecast

United States · Idaho · 83211

54°F

Clear night

Feels like: 44°F

💧 Humidity 36% 🌡 Pressure 29.97 inHg 💨 Wind 12 mph 👁 Visibility 28.6 mi ☁ Clouds 0% ☀️ UV index 0.0 · Low 🌅 Sunrise — 🌇 Sunset —

Hourly Forecast for American Falls

Today

3:00 AM

Clear night

52° 💧 None 💨 14 mph H 40%30.00 inHg

6:00 AM

Clear night

49° 💧 None 💨 13 mph H 51%30.06 inHg

9:00 AM

Sunny

52° 💧 None 💨 15 mph H 46%30.09 inHg

12:00 PM

Sunny

58° 💧 None 💨 14 mph H 40%30.09 inHg

3:00 PM

Sunny

64° 💧 None 💨 11 mph H 29%30.00 inHg

6:00 PM

Sunny

65° 💧 None 💨 8 mph H 26%29.94 inHg

9:00 PM

Clear night

57° 💧 None 💨 4 mph H 38%30.00 inHg

Tomorrow

12:00 AM

Clear night

52° 💧 None 💨 4 mph H 50%30.03 inHg

3:00 AM

Clear night

49° 💧 0.000 in 💨 2 mph H 58%30.03 inHg

6:00 AM

Clear night

44° 💧 None 💨 1 mph H 76%30.03 inHg

9:00 AM

Partly cloudy

52° 💧 None 💨 4 mph H 63%30.06 inHg

12:00 PM

Overcast

64° 💧 None 💨 7 mph H 30%29.97 inHg

3:00 PM

Partly cloudy

72° 💧 None 💨 6 mph H 20%29.85 inHg

6:00 PM

Sunny

75° 💧 None 💨 4 mph H 18%29.77 inHg

9:00 PM

Clear night

65° 💧 None 💨 4 mph H 29%29.80 inHg

Wednesday

12:00 AM

Clear night

59° 💧 None 💨 2 mph H 43%29.83 inHg

Today

3:00 AM

Clear night

52° 💧 None 💨 14 mph H 40%30.00 inHg

4:00 AM

Clear night

51° 💧 None 💨 13 mph H 44%30.03 inHg

5:00 AM

Clear night

49° 💧 None 💨 12 mph H 49%30.03 inHg

6:00 AM

Clear night

49° 💧 None 💨 13 mph H 51%30.06 inHg

7:00 AM

Clear night

48° 💧 None 💨 13 mph H 53%30.09 inHg

8:00 AM

Sunny

49° 💧 None 💨 13 mph H 51%30.09 inHg

9:00 AM

Sunny

52° 💧 None 💨 15 mph H 46%30.09 inHg

10:00 AM

Sunny

54° 💧 None 💨 16 mph H 44%30.12 inHg

11:00 AM

Sunny

56° 💧 None 💨 15 mph H 42%30.12 inHg

12:00 PM

Sunny

58° 💧 None 💨 14 mph H 40%30.09 inHg

1:00 PM

Sunny

60° 💧 None 💨 12 mph H 36%30.06 inHg

2:00 PM

Sunny

63° 💧 None 💨 12 mph H 32%30.03 inHg

3:00 PM

Sunny

64° 💧 None 💨 11 mph H 29%30.00 inHg

4:00 PM

Sunny

65° 💧 None 💨 10 mph H 27%29.97 inHg

5:00 PM

Sunny

65° 💧 None 💨 9 mph H 26%29.94 inHg

6:00 PM

Sunny

65° 💧 None 💨 8 mph H 26%29.94 inHg

7:00 PM

Sunny

63° 💧 None 💨 7 mph H 28%29.94 inHg

8:00 PM

Clear night

59° 💧 None 💨 4 mph H 34%29.97 inHg

9:00 PM

Clear night

57° 💧 None 💨 4 mph H 38%30.00 inHg

10:00 PM

Clear night

55° 💧 None 💨 4 mph H 41%30.00 inHg

11:00 PM

Clear night

54° 💧 None 💨 4 mph H 45%30.03 inHg

Tomorrow

12:00 AM

Clear night

52° 💧 None 💨 4 mph H 50%30.03 inHg

1:00 AM

Clear night

51° 💧 None 💨 4 mph H 52%30.03 inHg

2:00 AM

Clear night

50° 💧 None 💨 4 mph H 53%30.03 inHg

3:00 AM

Clear night

49° 💧 0.000 in 💨 2 mph H 58%30.03 inHg

4:00 AM

Clear night

47° 💧 None 💨 1 mph H 64%30.03 inHg

5:00 AM

Clear night

46° 💧 None 💨 0 mph H 70%30.03 inHg

6:00 AM

Clear night

44° 💧 None 💨 1 mph H 76%30.03 inHg

7:00 AM

Mostly clear night

44° 💧 None 💨 2 mph H 81%30.03 inHg

8:00 AM

Partly cloudy

47° 💧 None 💨 3 mph H 75%30.03 inHg

9:00 AM

Partly cloudy

52° 💧 None 💨 4 mph H 63%30.06 inHg

10:00 AM

Overcast

57° 💧 None 💨 6 mph H 48%30.03 inHg

11:00 AM

Overcast

60° 💧 None 💨 7 mph H 38%30.00 inHg

12:00 PM

Overcast

64° 💧 None 💨 7 mph H 30%29.97 inHg

1:00 PM

Mostly cloudy

68° 💧 None 💨 6 mph H 24%29.94 inHg

2:00 PM

Mostly cloudy

71° 💧 None 💨 6 mph H 21%29.88 inHg

3:00 PM

Partly cloudy

72° 💧 None 💨 6 mph H 20%29.85 inHg

4:00 PM

Sunny

74° 💧 None 💨 5 mph H 19%29.80 inHg

5:00 PM

Sunny

75° 💧 None 💨 4 mph H 18%29.77 inHg

6:00 PM

Sunny

75° 💧 None 💨 4 mph H 18%29.77 inHg

7:00 PM

Sunny

72° 💧 None 💨 3 mph H 20%29.77 inHg

8:00 PM

Clear night

67° 💧 None 💨 4 mph H 25%29.77 inHg

9:00 PM

Clear night

65° 💧 None 💨 4 mph H 29%29.80 inHg

10:00 PM

Clear night

63° 💧 None 💨 2 mph H 32%29.83 inHg

11:00 PM

Clear night

61° 💧 None 💨 4 mph H 39%29.83 inHg

Wednesday

12:00 AM

Clear night

59° 💧 None 💨 2 mph H 43%29.83 inHg

1:00 AM

Mostly clear night

57° 💧 None 💨 3 mph H 47%29.83 inHg

2:00 AM

Mostly clear night

56° 💧 None 💨 2 mph H 49%29.83 inHg

3:00 AM

Mostly clear night

54° 💧 None 💨 1 mph H 56%29.83 inHg

4:00 AM

Clear night

52° 💧 None 💨 1 mph H 61%29.85 inHg

5:00 AM

Clear night

51° 💧 None 💨 2 mph H 65%29.88 inHg

6:00 AM

Clear night

51° 💧 None 💨 4 mph H 67%29.88 inHg

7:00 AM

Clear night

51° 💧 None 💨 4 mph H 70%29.91 inHg

8:00 AM

Sunny

53° 💧 None 💨 6 mph H 65%29.94 inHg

9:00 AM

Sunny

57° 💧 None 💨 6 mph H 53%29.97 inHg

10:00 AM

Sunny

63° 💧 None 💨 7 mph H 41%29.97 inHg

11:00 AM

Sunny

71° 💧 None 💨 4 mph H 32%29.94 inHg

12:00 PM

Sunny

77° 💧 None 💨 5 mph H 33%29.91 inHg

1:00 PM

Mostly sunny

80° 💧 None 💨 11 mph H 27%29.88 inHg

2:00 PM

Light rain

79° 💧 0.005 in 💨 16 mph H 28%29.88 inHg

3:00 PM

Light thunderstorms

79° 💧 0.006 in 💨 15 mph H 27%29.88 inHg

4:00 PM

Light thunderstorms

78° 💧 0.012 in 💨 9 mph H 33%29.88 inHg

5:00 PM

Partly cloudy

79° 💧 0.000 in 💨 8 mph H 32%29.85 inHg

6:00 PM

Mostly cloudy

78° 💧 None 💨 9 mph H 32%29.85 inHg

9:00 PM

Partly cloudy night

68° 💧 None 💨 3 mph H 52%29.91 inHg

Thursday

12:00 AM

Mostly clear night

61° 💧 None 💨 5 mph H 72%29.94 inHg

3:00 AM

Partly cloudy night

59° 💧 None 💨 4 mph H 69%29.91 inHg

6:00 AM

Partly cloudy night

58° 💧 None 💨 3 mph H 75%29.97 inHg

9:00 AM

Mostly sunny

63° 💧 None 💨 2 mph H 66%30.00 inHg

12:00 PM

Mostly sunny

75° 💧 None 💨 13 mph H 43%29.94 inHg

3:00 PM

Mostly sunny

77° 💧 None 💨 12 mph H 38%29.88 inHg

6:00 PM

Mostly sunny

78° 💧 None 💨 14 mph H 27%29.83 inHg

9:00 PM

Mostly clear night

67° 💧 None 💨 3 mph H 48%29.88 inHg

Friday

12:00 AM

Mostly clear night

60° 💧 None 💨 6 mph H 57%29.97 inHg

3:00 AM

Mostly clear night

57° 💧 None 💨 6 mph H 58%30.00 inHg

6:00 AM

Mostly clear night

53° 💧 None 💨 4 mph H 59%30.06 inHg

9:00 AM

Mostly sunny

57° 💧 None 💨 8 mph H 55%30.09 inHg

12:00 PM

Sunny

66° 💧 None 💨 9 mph H 38%30.06 inHg

3:00 PM

Sunny

71° 💧 None 💨 12 mph H 23%30.00 inHg

6:00 PM

Sunny

68° 💧 None 💨 13 mph H 27%30.00 inHg

9:00 PM

Clear night

60° 💧 None 💨 6 mph H 44%30.03 inHg

Saturday

12:00 AM

Clear night

56° 💧 None 💨 8 mph H 54%30.09 inHg

3:00 AM

Clear night

52° 💧 None 💨 6 mph H 62%30.12 inHg

6:00 AM

Clear night

49° 💧 None 💨 5 mph H 68%30.12 inHg

9:00 AM

Sunny

55° 💧 None 💨 6 mph H 52%30.15 inHg

12:00 PM

Sunny

64° 💧 None 💨 4 mph H 35%30.12 inHg

3:00 PM

Sunny

69° 💧 None 💨 5 mph H 25%30.06 inHg

6:00 PM

Sunny

69° 💧 None 💨 2 mph H 23%30.00 inHg

Sunday

12:00 AM

Mostly clear night

54° 💧 None 💨 4 mph H 42%30.06 inHg

6:00 AM

Clear night

51° 💧 None 💨 2 mph H 44%30.09 inHg

12:00 PM

Sunny

70° 💧 None 💨 3 mph H 23%30.12 inHg

6:00 PM

Sunny

74° 💧 None 💨 6 mph H 16%30.00 inHg

Monday

12:00 AM

Clear night

59° 💧 None 💨 2 mph H 33%30.03 inHg

6:00 AM

Clear night

50° 💧 None 💨 2 mph H 49%30.03 inHg

12:00 PM

Sunny

76° 💧 None 💨 2 mph H 19%30.00 inHg

6:00 PM

Sunny

80° 💧 None 💨 7 mph H 13%29.85 inHg

Tuesday

12:00 AM

Clear night

61° 💧 None 💨 5 mph H 25%29.91 inHg

6:00 AM

Clear night

54° 💧 None 💨 3 mph H 34%29.88 inHg

12:00 PM

Sunny

80° 💧 None 💨 5 mph H 13%29.85 inHg

6:00 PM

Mostly sunny

82° 💧 None 💨 8 mph H 10%29.74 inHg

Wednesday

12:00 AM

Partly cloudy night

64° 💧 None 💨 9 mph H 21%29.85 inHg

6:00 AM

Clear night

54° 💧 None 💨 6 mph H 51%29.97 inHg

12:00 PM

Partly cloudy

64° 💧 None 💨 8 mph H 32%30.03 inHg

6:00 PM

Mostly cloudy

69° 💧 None 💨 6 mph H 24%29.94 inHg

Thursday

12:00 AM

Overcast night

59° 💧 None 💨 2 mph H 37%29.97 inHg

6:00 AM

Light rain

52° 💧 None 💨 5 mph H 92%30.03 inHg

12:00 PM

Partly cloudy

65° 💧 None 💨 2 mph H 65%30.03 inHg

6:00 PM

Partly cloudy

64° 💧 None 💨 1 mph H 62%30.00 inHg

Friday

12:00 AM

Mostly clear night

53° 💧 None 💨 1 mph H 88%30.03 inHg

6:00 AM

Partly cloudy night

50° 💧 None 💨 2 mph H 92%30.06 inHg

12:00 PM

Overcast

64° 💧 None 💨 3 mph H 61%30.06 inHg

6:00 PM

Light rain

63° 💧 None 💨 5 mph H 67%30.03 inHg

Saturday

12:00 AM

Light rain

51° 💧 None 💨 4 mph H 92%30.06 inHg

6:00 AM

Clear night

50° 💧 None 💨 2 mph H 86%30.09 inHg

12:00 PM

Partly cloudy

66° 💧 None 💨 3 mph H 55%30.09 inHg

6:00 PM

Light rain

66° 💧 None 💨 4 mph H 51%30.03 inHg

Sunday

12:00 AM

Mostly clear night

54° 💧 None 💨 4 mph H 79%30.09 inHg

6:00 AM

Clear night

48° 💧 None 💨 4 mph H 88%30.09 inHg

12:00 PM

Sunny

65° 💧 None 💨 8 mph H 52%30.09 inHg

6:00 PM

Mostly sunny

67° 💧 None 💨 7 mph H 42%29.97 inHg

Monday

12:00 AM

Clear night

53° 💧 None 💨 4 mph H 64%30.00 inHg

6:00 AM

Mostly clear night

49° 💧 None 💨 1 mph H 76%30.00 inHg

12:00 PM

Mostly cloudy

68° 💧 None 💨 2 mph H 40%29.97 inHg

6:00 PM

Mostly sunny

69° 💧 None 💨 3 mph H 32%29.85 inHg

In American Falls and, more broadly, across the state of Idaho: The evening will be mostly sunny with just a few clouds passing through. Temperatures are expected to remain cool, holding steady around 48 degrees Fahrenheit. Light southwest winds will prevail, blowing at up to 5 mph with occasional gusts reaching 8 mph. No precipitation is expected during the evening hours, so conditions should stay dry and comfortable. As the night progresses, temperatures will stay steady, and winds will remain gentle. Overall, it looks like a clear and calm evening to wind down.

15-Day Weather Outlook for American Falls

TomorrowTomorrow

Mostly sunny 75°/44° 💧 None 💨 7 mph

Wednesday, Sep 16Wed Sep 16

Light thunderstorms 80°/51° 💧 0.037 in 💨 16 mph

Thursday, Sep 17Thu Sep 17

Mostly sunny 78°/58° 💧 0.044 in 💨 14 mph

Friday, Sep 18Fri Sep 18

Mostly sunny 71°/53° 💧 0.012 in 💨 13 mph

Saturday, Sep 19Sat Sep 19

Sunny 69°/49° 💧 None 💨 8 mph

Sunday, Sep 20Sun Sep 20

Mostly sunny 74°/51° 💧 None 💨 6 mph

Monday, Sep 21Mon Sep 21

Sunny 80°/50° 💧 None 💨 7 mph

Tuesday, Sep 22Tue Sep 22

Mostly sunny 82°/54° 💧 None 💨 8 mph

Wednesday, Sep 23Wed Sep 23

Partly cloudy 69°/54° 💧 None 💨 9 mph

Thursday, Sep 24Thu Sep 24

Light rain 65°/52° 💧 0.680 in 💨 5 mph

Friday, Sep 25Fri Sep 25

Light rain 64°/50° 💧 0.097 in 💨 5 mph

Saturday, Sep 26Sat Sep 26

Light rain 66°/50° 💧 0.031 in 💨 4 mph

Sunday, Sep 27Sun Sep 27

Mostly sunny 67°/48° 💧 0.011 in 💨 8 mph

Monday, Sep 28Mon Sep 28

Mostly sunny 69°/49° 💧 0.007 in 💨 4 mph

TEMPERATURE OUTLOOK

Temperature & Weather Trends in American Falls

Vertical axis: °F · Color based on temperature

AIR QUALITY FORECAST

Air Quality Forecast for American Falls

Hourly forecast · Updated every 2 hours

Fair

Nearest forecast value 3:00 AM

PM2.5 Fine particles Good 0,6µg/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 2,2µg/m³

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

O₃ Ozone Fair 78,6µg/m³

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

NO₂ Nitrogen dioxide Good 0,4µg/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 American 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 6,1High 🙂Fair

Tomorrow UV 5,8Moderate 🙂Fair

Wednesday UV 5,5Moderate 🙂Fair

Thursday UV 8,0Very high 🙂Fair

Friday UV 7,0High 🙂Fair

Saturday UV 7,0High —Unavailable

Sunday UV 6,0High —Unavailable

Hourly UV index today

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

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.

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 American Falls

Vertical axis: mph · Horizontal axis: hours

Sustained wind Max gusts

NIGHT SKY · AMERICAN FALLS, IDAHO

Tonight's Stargazing & Shooting Stars

Excellent observing conditions. Best local viewing window: 5:00 AM–6:00 AM.

100/100Best-hour score

BEST TIME TONIGHT 5:00 AM–6:00 AM Astronomical darkness: 9:21 PM–5:33 AM

☁ Cloud cover 0% Real hourly forecast for the best viewing hour.

☾ Moonlight 7% Waxing Crescent · Moon below the horizon at the best viewing hour.

☄ Meteor activity September ε-Perseids Reference ZHR 8 · Radiant 87° high at the best hour.

✦ Estimated visible meteors 2–5/hour Local estimate after weather, moonlight and radiant-height adjustments.

Chance ≥1 meteor in 30 min81%

UPCOMING METEOR PERIODSStart, peak and end dates · weather should be checked closer to the peak.

SEP 5–SEP 21

September ε-PerseidsStart SEP 5 · Peak SEP 9 · End SEP 21 · ZHR 8 · 6% Moon at peak

ACTIVE NOW

SEP 20–NOV 20

Southern TauridsStart SEP 20 · Peak NOV 5 · End NOV 20 · ZHR 7 · 20% Moon at peak

UPCOMING

OCT 2–NOV 7

OrionidsStart OCT 2 · Peak OCT 21 · End NOV 7 · ZHR 20 · 77% Moon at peak

UPCOMING

OCT 20–DEC 10

Northern TauridsStart OCT 20 · Peak NOV 12 · End DEC 10 · ZHR 5 · 7% Moon at peak

UPCOMING

Experimental local observing estimate. Weather values come from the hourly forecast already used on this page. Moon position and astronomical darkness are calculated locally from time and coordinates. Meteor-shower ZHR describes ideal conditions and is not the number of meteors a person should expect to see locally.

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Forecast data for American Falls were last refreshed today at 2:28 AM. The current forecast period extends through 16/09/2026 at 12:00 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.