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Current weather in Dayton is clear sky.

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

Now · 4:58 PM

Dayton Weather & Hourly Forecast

United States · Montana · 59914

70°F

Sunny

Feels like: 67°F

💧 Humidity 40% 🌡 Pressure 29.91 inHg 💨 Wind 4 mph 👁 Visibility 25.1 mi ☁ Clouds 0% ☀️ UV index 3.0 · Moderate 🌅 Sunrise — 🌇 Sunset —

Hourly Forecast for Dayton

Today

5:00 PM

Sunny

70° 💧 None 💨 4 mph H 40%29.91 inHg

8:00 PM

Clear night

62° 💧 None 💨 3 mph H 58%29.88 inHg

11:00 PM

Clear night

63° 💧 None 💨 0 mph H 50%29.88 inHg

Tomorrow

2:00 AM

Clear night

62° 💧 None 💨 1 mph H 54%29.88 inHg

5:00 AM

Partly cloudy night

60° 💧 None 💨 1 mph H 64%29.88 inHg

8:00 AM

Overcast

58° 💧 None 💨 2 mph H 72%29.88 inHg

11:00 AM

Overcast

64° 💧 None 💨 3 mph H 49%29.91 inHg

2:00 PM

Overcast

68° 💧 None 💨 4 mph H 45%29.85 inHg

5:00 PM

Overcast

70° 💧 None 💨 3 mph H 43%29.83 inHg

8:00 PM

Overcast night

63° 💧 None 💨 1 mph H 62%29.85 inHg

11:00 PM

Overcast night

61° 💧 None 💨 1 mph H 58%29.88 inHg

Wednesday

2:00 AM

Clear night

58° 💧 None 💨 1 mph H 65%29.91 inHg

5:00 AM

Mostly clear night

56° 💧 None 💨 0 mph H 69%29.94 inHg

8:00 AM

Partly cloudy

52° 💧 None 💨 2 mph H 75%30.00 inHg

11:00 AM

Sunny

61° 💧 None 💨 5 mph H 56%30.06 inHg

2:00 PM

Mostly sunny

66° 💧 None 💨 8 mph H 36%30.03 inHg

Today

5:00 PM

Sunny

70° 💧 None 💨 4 mph H 40%29.91 inHg

6:00 PM

Sunny

69° 💧 None 💨 3 mph H 42%29.88 inHg

7:00 PM

Sunny

65° 💧 None 💨 2 mph H 57%29.88 inHg

8:00 PM

Clear night

62° 💧 None 💨 3 mph H 58%29.88 inHg

9:00 PM

Clear night

61° 💧 None 💨 2 mph H 57%29.88 inHg

10:00 PM

Clear night

61° 💧 None 💨 1 mph H 54%29.88 inHg

11:00 PM

Clear night

63° 💧 None 💨 0 mph H 50%29.88 inHg

Tomorrow

12:00 AM

Clear night

63° 💧 None 💨 0 mph H 49%29.88 inHg

1:00 AM

Clear night

62° 💧 None 💨 1 mph H 51%29.88 inHg

2:00 AM

Clear night

62° 💧 None 💨 1 mph H 54%29.88 inHg

3:00 AM

Clear night

61° 💧 None 💨 1 mph H 57%29.88 inHg

4:00 AM

Mostly clear night

60° 💧 None 💨 1 mph H 61%29.88 inHg

5:00 AM

Partly cloudy night

60° 💧 None 💨 1 mph H 64%29.88 inHg

6:00 AM

Mostly clear night

59° 💧 None 💨 1 mph H 69%29.88 inHg

7:00 AM

Mostly cloudy night

58° 💧 None 💨 2 mph H 74%29.88 inHg

8:00 AM

Overcast

58° 💧 None 💨 2 mph H 72%29.88 inHg

9:00 AM

Overcast

61° 💧 None 💨 2 mph H 67%29.88 inHg

10:00 AM

Overcast

63° 💧 None 💨 3 mph H 53%29.91 inHg

11:00 AM

Overcast

64° 💧 None 💨 3 mph H 49%29.91 inHg

12:00 PM

Overcast

66° 💧 None 💨 3 mph H 47%29.88 inHg

1:00 PM

Overcast

67° 💧 None 💨 3 mph H 47%29.88 inHg

2:00 PM

Overcast

68° 💧 None 💨 4 mph H 45%29.85 inHg

3:00 PM

Overcast

70° 💧 None 💨 4 mph H 44%29.85 inHg

4:00 PM

Overcast

70° 💧 None 💨 4 mph H 43%29.83 inHg

5:00 PM

Overcast

70° 💧 None 💨 3 mph H 43%29.83 inHg

6:00 PM

Overcast

69° 💧 None 💨 2 mph H 45%29.83 inHg

7:00 PM

Overcast

65° 💧 None 💨 2 mph H 60%29.85 inHg

8:00 PM

Overcast night

63° 💧 None 💨 1 mph H 62%29.85 inHg

9:00 PM

Mostly cloudy night

61° 💧 None 💨 2 mph H 60%29.88 inHg

10:00 PM

Overcast night

61° 💧 None 💨 2 mph H 57%29.88 inHg

11:00 PM

Overcast night

61° 💧 None 💨 1 mph H 58%29.88 inHg

Wednesday

12:00 AM

Partly cloudy night

61° 💧 None 💨 1 mph H 58%29.88 inHg

1:00 AM

Mostly clear night

59° 💧 None 💨 1 mph H 61%29.88 inHg

2:00 AM

Clear night

58° 💧 None 💨 1 mph H 65%29.91 inHg

3:00 AM

Clear night

57° 💧 None 💨 1 mph H 68%29.91 inHg

4:00 AM

Clear night

56° 💧 None 💨 0 mph H 68%29.94 inHg

5:00 AM

Mostly clear night

56° 💧 None 💨 0 mph H 69%29.94 inHg

6:00 AM

Mostly clear night

54° 💧 None 💨 1 mph H 71%29.97 inHg

7:00 AM

Partly cloudy night

53° 💧 None 💨 1 mph H 72%29.97 inHg

8:00 AM

Partly cloudy

52° 💧 None 💨 2 mph H 75%30.00 inHg

9:00 AM

Mostly sunny

57° 💧 None 💨 2 mph H 70%30.03 inHg

10:00 AM

Sunny

59° 💧 None 💨 3 mph H 58%30.03 inHg

11:00 AM

Sunny

61° 💧 None 💨 5 mph H 56%30.06 inHg

12:00 PM

Mostly sunny

63° 💧 None 💨 7 mph H 48%30.06 inHg

1:00 PM

Sunny

65° 💧 None 💨 8 mph H 41%30.03 inHg

2:00 PM

Mostly sunny

66° 💧 None 💨 8 mph H 36%30.03 inHg

3:00 PM

Mostly sunny

67° 💧 None 💨 7 mph H 34%30.00 inHg

4:00 PM

Mostly sunny

68° 💧 None 💨 7 mph H 32%29.97 inHg

5:00 PM

Mostly cloudy

69° 💧 None 💨 6 mph H 30%29.97 inHg

6:00 PM

Mostly cloudy

67° 💧 None 💨 4 mph H 36%29.97 inHg

7:00 PM

Mostly cloudy

63° 💧 None 💨 3 mph H 48%29.97 inHg

8:00 PM

Mostly cloudy night

59° 💧 None 💨 3 mph H 51%30.00 inHg

9:00 PM

Partly cloudy night

57° 💧 None 💨 3 mph H 58%30.00 inHg

10:00 PM

Clear night

56° 💧 None 💨 1 mph H 63%30.00 inHg

11:00 PM

Clear night

58° 💧 None 💨 1 mph H 53%30.00 inHg

Thursday

12:00 AM

Mostly clear night

59° 💧 None 💨 1 mph H 49%30.00 inHg

1:00 AM

Mostly clear night

59° 💧 None 💨 1 mph H 49%30.00 inHg

2:00 AM

Clear night

59° 💧 None 💨 1 mph H 49%30.00 inHg

3:00 AM

Clear night

58° 💧 None 💨 2 mph H 55%30.00 inHg

4:00 AM

Clear night

56° 💧 None 💨 2 mph H 63%30.00 inHg

5:00 AM

Clear night

55° 💧 None 💨 2 mph H 67%30.00 inHg

6:00 AM

Fog at night

55° 💧 None 💨 2 mph H 68%30.00 inHg

9:00 AM

Mostly sunny

60° 💧 None 💨 2 mph H 77%30.03 inHg

12:00 PM

Sunny

66° 💧 None 💨 3 mph H 52%29.97 inHg

3:00 PM

Sunny

72° 💧 None 💨 4 mph H 43%29.88 inHg

6:00 PM

Mostly sunny

72° 💧 None 💨 5 mph H 50%29.83 inHg

9:00 PM

Clear night

63° 💧 None 💨 3 mph H 73%29.77 inHg

Friday

12:00 AM

Clear night

60° 💧 None 💨 2 mph H 83%29.77 inHg

3:00 AM

Clear night

58° 💧 None 💨 2 mph H 91%29.74 inHg

6:00 AM

Clear night

58° 💧 None 💨 2 mph H 86%29.71 inHg

9:00 AM

Mostly sunny

61° 💧 None 💨 2 mph H 85%29.71 inHg

12:00 PM

Partly cloudy

72° 💧 None 💨 1 mph H 48%29.65 inHg

3:00 PM

Mostly sunny

79° 💧 None 💨 3 mph H 34%29.56 inHg

6:00 PM

Partly cloudy

76° 💧 None 💨 4 mph H 39%29.50 inHg

9:00 PM

Clear night

61° 💧 None 💨 10 mph H 77%29.62 inHg

Saturday

12:00 AM

Light rain

54° 💧 None 💨 7 mph H 84%29.83 inHg

3:00 AM

Mostly cloudy night

52° 💧 None 💨 9 mph H 78%29.85 inHg

6:00 AM

Light rain

49° 💧 None 💨 6 mph H 80%29.88 inHg

9:00 AM

Overcast

49° 💧 None 💨 13 mph H 75%29.97 inHg

12:00 PM

Overcast

51° 💧 None 💨 16 mph H 56%30.00 inHg

3:00 PM

Mostly sunny

56° 💧 None 💨 15 mph H 39%29.97 inHg

6:00 PM

Mostly sunny

57° 💧 None 💨 12 mph H 33%29.97 inHg

9:00 PM

Clear night

49° 💧 None 💨 4 mph H 50%30.00 inHg

Sunday

12:00 AM

Mostly clear night

47° 💧 None 💨 4 mph H 55%30.00 inHg

3:00 AM

Overcast night

45° 💧 None 💨 5 mph H 59%30.00 inHg

6:00 AM

Overcast night

43° 💧 None 💨 3 mph H 65%30.00 inHg

12:00 PM

Mostly cloudy

54° 💧 None 💨 5 mph H 39%29.97 inHg

6:00 PM

Sunny

60° 💧 None 💨 6 mph H 29%29.85 inHg

Monday

12:00 AM

Clear night

47° 💧 None 💨 2 mph H 59%29.94 inHg

6:00 AM

Clear night

41° 💧 None 💨 2 mph H 72%30.00 inHg

12:00 PM

Mostly cloudy

54° 💧 None 💨 6 mph H 38%29.97 inHg

6:00 PM

Mostly cloudy

59° 💧 None 💨 6 mph H 33%29.83 inHg

Tuesday

12:00 AM

Partly cloudy night

49° 💧 None 💨 3 mph H 53%29.83 inHg

6:00 AM

Mostly cloudy night

47° 💧 None 💨 2 mph H 58%29.83 inHg

12:00 PM

Mostly cloudy

59° 💧 None 💨 3 mph H 38%29.80 inHg

6:00 PM

Overcast

61° 💧 None 💨 8 mph H 37%29.71 inHg

Wednesday

12:00 AM

Light rain

52° 💧 None 💨 4 mph H 81%29.80 inHg

6:00 AM

Overcast night

49° 💧 None 💨 4 mph H 87%29.83 inHg

12:00 PM

Mostly sunny

56° 💧 None 💨 7 mph H 56%29.85 inHg

6:00 PM

Partly cloudy

59° 💧 None 💨 8 mph H 34%29.85 inHg

Thursday

12:00 AM

Clear night

46° 💧 None 💨 3 mph H 67%29.97 inHg

6:00 AM

Clear night

44° 💧 None 💨 0 mph H 68%29.97 inHg

12:00 PM

Mostly cloudy

55° 💧 None 💨 2 mph H 51%29.91 inHg

6:00 PM

Overcast

58° 💧 None 💨 3 mph H 58%29.74 inHg

Friday

12:00 AM

Overcast night

53° 💧 None 💨 4 mph H 63%29.68 inHg

6:00 AM

Light rain

44° 💧 None 💨 12 mph H 89%29.91 inHg

12:00 PM

Partly cloudy

51° 💧 None 💨 13 mph H 54%30.06 inHg

6:00 PM

Partly cloudy

53° 💧 None 💨 13 mph H 43%30.15 inHg

Saturday

12:00 AM

Mostly clear night

44° 💧 None 💨 6 mph H 66%30.33 inHg

6:00 AM

Partly cloudy night

40° 💧 None 💨 2 mph H 76%30.36 inHg

12:00 PM

Mostly sunny

51° 💧 None 💨 3 mph H 46%30.30 inHg

6:00 PM

Partly cloudy

59° 💧 None 💨 2 mph H 40%30.12 inHg

Sunday

12:00 AM

Mostly cloudy night

50° 💧 None 💨 1 mph H 46%30.06 inHg

6:00 AM

Mostly cloudy night

46° 💧 None 💨 1 mph H 54%30.03 inHg

12:00 PM

Partly cloudy

58° 💧 None 💨 2 mph H 39%29.97 inHg

6:00 PM

Light rain

59° 💧 None 💨 3 mph H 77%29.85 inHg

Monday

12:00 AM

Clear night

51° 💧 None 💨 4 mph H 63%29.85 inHg

6:00 AM

Mostly clear night

49° 💧 None 💨 6 mph H 61%29.88 inHg

12:00 PM

Overcast

61° 💧 None 💨 14 mph H 52%29.94 inHg

6:00 PM

Sunny

64° 💧 None 💨 11 mph H 43%29.94 inHg

Tuesday

12:00 AM

Mostly clear night

54° 💧 None 💨 8 mph H 65%30.12 inHg

6:00 AM

Clear night

47° 💧 None 💨 3 mph H 78%30.18 inHg

In Dayton and, more broadly, across the state of Montana: The afternoon will continue with clear skies and mild temperatures ranging from the upper 60s to around 70 degrees. Winds will be light from the north, steady at about 9 mph, with occasional gusts reaching up to 17 mph. As evening approaches, the weather is expected to remain calm and dry, with no precipitation in the forecast. Temperatures will gradually decrease, settling into the low to mid-60s overnight. The light north wind will persist through the evening, providing a gentle breeze. Overall, the night promises to be clear and comfortable, with mild temperatures and minimal wind activity.

15-Day Weather Outlook for Dayton

TomorrowTomorrow

Mostly sunny 70°/58° 💧 None 💨 4 mph

Wednesday, Sep 23Wed Sep 23

Partly cloudy 69°/52° 💧 None 💨 8 mph

Thursday, Sep 24Thu Sep 24

Mostly sunny 72°/55° 💧 0.001 in 💨 5 mph

Friday, Sep 25Fri Sep 25

Mostly sunny 79°/58° 💧 0.032 in 💨 10 mph

Saturday, Sep 26Sat Sep 26

Light rain 57°/49° 💧 0.222 in 💨 16 mph

Sunday, Sep 27Sun Sep 27

Mostly sunny 60°/43° 💧 0.001 in 💨 6 mph

Monday, Sep 28Mon Sep 28

Mostly cloudy 59°/41° 💧 None 💨 6 mph

Tuesday, Sep 29Tue Sep 29

Partly cloudy 61°/47° 💧 None 💨 8 mph

Wednesday, Sep 30Wed Sep 30

Light rain 59°/49° 💧 0.037 in 💨 8 mph

Thursday, Oct 1Thu Oct 1

Mostly cloudy 58°/44° 💧 None 💨 3 mph

Friday, Oct 2Fri Oct 2

Light rain 53°/44° 💧 0.091 in 💨 13 mph

Saturday, Oct 3Sat Oct 3

Mostly sunny 59°/40° 💧 None 💨 6 mph

Sunday, Oct 4Sun Oct 4

Light rain 59°/46° 💧 0.031 in 💨 3 mph

Monday, Oct 5Mon Oct 5

Overcast 64°/49° 💧 0.007 in 💨 14 mph

Tuesday, Oct 6Tue Oct 6

Mostly sunny 54°/47° 💧 None 💨 8 mph

TEMPERATURE OUTLOOK

Temperature & Weather Trends in Dayton

Vertical axis: °F · Color based on temperature

AIR QUALITY FORECAST

Air Quality Forecast for Dayton

Hourly forecast · Updated every 2 hours

Fair

Nearest forecast value 5:00 PM

PM2.5 Fine particles Good 1,2µg/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 1,6µg/m³

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

O₃ Ozone Fair 89,5µg/m³

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

NO₂ Nitrogen dioxide Good 0,2µg/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 Dayton

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 4,9Moderate 🙂Fair

Tomorrow UV 4,3Moderate 🙂Fair

Wednesday UV 4,3Moderate 🙂Fair

Thursday UV 4,0Moderate 😐Moderate

Friday UV 2,7Low 😐Moderate

Saturday UV 4,0Moderate —Unavailable

Sunday UV 4,0Moderate —Unavailable

Hourly UV index today

5:00 PMUV 1,6 6:00 PMUV 0,6 7:00 PMUV 0,1

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 Dayton

Vertical axis: mph · Horizontal axis: hours

Sustained wind Max gusts

NIGHT SKY · DAYTON, MONTANA

Tonight's Stargazing & Shooting Stars

Excellent observing conditions. Best local viewing window: 1:00 AM–2:00 AM.

97/100Best-hour score

BEST TIME TONIGHT 1:00 AM–2:00 AM Astronomical darkness: 9:22 PM–5:39 AM

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

☾ Moonlight 80% Waxing Gibbous · Moon about 12° above the horizon at the best viewing hour.

☄ Meteor activity September ε-Perseids Reference ZHR 8 · Radiant 50° high at the best hour.

✦ Estimated visible meteors 0–2/hour Local estimate after weather, moonlight and radiant-height adjustments.

Chance ≥1 meteor in 30 min50%

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

ACTIVE NOW

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.

DISCOVER WEATHER NEARBY Weather in other cities

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Forecast data for Dayton were last refreshed today at 4:58 PM. The current forecast period extends through 23/09/2026 at 2:00 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.