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Current weather in Roy is clear sky.

Where can I find the hourly weather forecast for Roy?

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

Is the weather forecast for Roy updated regularly?

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

Now · 12:51 AM

Roy Weather & Hourly Forecast

United States · Montana · 59471

57°F

Clear night

Feels like: 54°F

💧 Humidity 44% 🌡 Pressure 29.88 inHg 💨 Wind 10 mph 👁 Visibility 6.2 mi ☁ Clouds 7% ☀️ UV index 0.0 · Low 🌅 Sunrise 6:40 AM 🌇 Sunset 7:49 PM

Hourly Forecast for Roy

Today

1:00 AM

Clear night

57° 💧 None 💨 10 mph H 44%29.88 inHg

4:00 AM

Partly cloudy night

55° 💧 None 💨 10 mph H 43%29.91 inHg

7:00 AM

Sunny

53° 💧 None 💨 12 mph H 51%29.97 inHg

10:00 AM

Sunny

61° 💧 None 💨 12 mph H 38%29.97 inHg

1:00 PM

Sunny

71° 💧 None 💨 10 mph H 29%29.94 inHg

4:00 PM

Sunny

75° 💧 None 💨 12 mph H 26%29.91 inHg

7:00 PM

Sunny

73° 💧 None 💨 10 mph H 28%29.88 inHg

10:00 PM

Clear night

60° 💧 None 💨 5 mph H 47%29.94 inHg

Tomorrow

1:00 AM

Clear night

56° 💧 None 💨 2 mph H 56%29.94 inHg

4:00 AM

Partly cloudy night

55° 💧 None 💨 6 mph H 59%29.94 inHg

7:00 AM

Light rain

53° 💧 0.01 in 💨 7 mph H 70%29.94 inHg

10:00 AM

Sunny

62° 💧 None 💨 11 mph H 54%29.94 inHg

1:00 PM

Mostly cloudy

71° 💧 None 💨 9 mph H 45%29.88 inHg

4:00 PM

Partly cloudy

75° 💧 None 💨 6 mph H 40%29.80 inHg

7:00 PM

Light rain

74° 💧 0.03 in 💨 4 mph H 49%29.77 inHg

10:00 PM

Moderate rain

67° 💧 0.15 in 💨 5 mph H 66%29.74 inHg

Today

1:00 AM

Clear night

57° 💧 None 💨 10 mph H 44%29.88 inHg

2:00 AM

Mostly clear night

56° 💧 None 💨 10 mph H 43%29.88 inHg

3:00 AM

Partly cloudy night

56° 💧 None 💨 10 mph H 42%29.88 inHg

4:00 AM

Partly cloudy night

55° 💧 None 💨 10 mph H 43%29.91 inHg

5:00 AM

Partly cloudy night

54° 💧 None 💨 10 mph H 46%29.94 inHg

6:00 AM

Partly cloudy night

53° 💧 None 💨 12 mph H 48%29.94 inHg

7:00 AM

Sunny

53° 💧 None 💨 12 mph H 51%29.97 inHg

8:00 AM

Sunny

55° 💧 None 💨 14 mph H 48%29.97 inHg

9:00 AM

Sunny

58° 💧 None 💨 13 mph H 45%29.97 inHg

10:00 AM

Sunny

61° 💧 None 💨 12 mph H 38%29.97 inHg

11:00 AM

Sunny

63° 💧 None 💨 10 mph H 34%29.97 inHg

12:00 PM

Sunny

67° 💧 None 💨 10 mph H 31%29.97 inHg

1:00 PM

Sunny

71° 💧 None 💨 10 mph H 29%29.94 inHg

2:00 PM

Sunny

73° 💧 None 💨 11 mph H 27%29.94 inHg

3:00 PM

Sunny

74° 💧 None 💨 10 mph H 26%29.91 inHg

4:00 PM

Sunny

75° 💧 None 💨 12 mph H 26%29.91 inHg

5:00 PM

Sunny

75° 💧 None 💨 10 mph H 25%29.88 inHg

6:00 PM

Sunny

75° 💧 None 💨 11 mph H 25%29.88 inHg

7:00 PM

Sunny

73° 💧 None 💨 10 mph H 28%29.88 inHg

8:00 PM

Clear night

66° 💧 None 💨 6 mph H 37%29.91 inHg

9:00 PM

Clear night

62° 💧 None 💨 6 mph H 42%29.94 inHg

10:00 PM

Clear night

60° 💧 None 💨 5 mph H 47%29.94 inHg

11:00 PM

Clear night

59° 💧 None 💨 4 mph H 49%29.94 inHg

Tomorrow

12:00 AM

Clear night

58° 💧 None 💨 3 mph H 53%29.94 inHg

1:00 AM

Clear night

56° 💧 None 💨 2 mph H 56%29.94 inHg

2:00 AM

Clear night

56° 💧 None 💨 6 mph H 56%29.94 inHg

3:00 AM

Partly cloudy night

55° 💧 None 💨 7 mph H 59%29.94 inHg

4:00 AM

Partly cloudy night

55° 💧 None 💨 6 mph H 59%29.94 inHg

5:00 AM

Mostly cloudy night

55° 💧 None 💨 6 mph H 63%29.94 inHg

6:00 AM

Mostly cloudy night

55° 💧 None 💨 8 mph H 62%29.94 inHg

7:00 AM

Light rain

53° 💧 0.01 in 💨 7 mph H 70%29.94 inHg

8:00 AM

Sunny

57° 💧 None 💨 8 mph H 64%29.94 inHg

9:00 AM

Sunny

60° 💧 None 💨 10 mph H 58%29.94 inHg

10:00 AM

Sunny

62° 💧 None 💨 11 mph H 54%29.94 inHg

11:00 AM

Sunny

64° 💧 None 💨 11 mph H 51%29.91 inHg

12:00 PM

Mostly sunny

67° 💧 None 💨 10 mph H 48%29.91 inHg

1:00 PM

Mostly cloudy

71° 💧 None 💨 9 mph H 45%29.88 inHg

2:00 PM

Mostly cloudy

73° 💧 None 💨 8 mph H 42%29.85 inHg

3:00 PM

Partly cloudy

75° 💧 None 💨 7 mph H 41%29.83 inHg

4:00 PM

Partly cloudy

75° 💧 None 💨 6 mph H 40%29.80 inHg

5:00 PM

Mostly cloudy

76° 💧 None 💨 7 mph H 39%29.80 inHg

6:00 PM

Mostly cloudy

75° 💧 None 💨 5 mph H 42%29.77 inHg

7:00 PM

Light rain

74° 💧 0.01 in 💨 4 mph H 49%29.77 inHg

8:00 PM

Overcast night

71° 💧 None 💨 6 mph H 52%29.74 inHg

9:00 PM

Light rain

69° 💧 0.02 in 💨 7 mph H 57%29.74 inHg

10:00 PM

Moderate rain

67° 💧 0.05 in 💨 5 mph H 66%29.74 inHg

11:00 PM

Light rain

66° 💧 0.03 in 💨 7 mph H 69%29.74 inHg

Monday

12:00 AM

Moderate rain

65° 💧 0.07 in 💨 7 mph H 76%29.74 inHg

1:00 AM

Moderate rain

64° 💧 0.06 in 💨 6 mph H 81%29.71 inHg

2:00 AM

Heavy rain

61° 💧 0.41 in 💨 15 mph H 94%29.68 inHg

3:00 AM

Very heavy rain

60° 💧 0.68 in 💨 7 mph H 84%29.74 inHg

4:00 AM

Light rain

60° 💧 0.01 in 💨 11 mph H 85%29.71 inHg

5:00 AM

Light rain

60° 💧 0.03 in 💨 10 mph H 90%29.71 inHg

6:00 AM

Overcast night

60° 💧 None 💨 10 mph H 90%29.71 inHg

7:00 AM

Overcast

59° 💧 None 💨 10 mph H 89%29.71 inHg

8:00 AM

Overcast

60° 💧 None 💨 10 mph H 84%29.71 inHg

9:00 AM

Overcast

62° 💧 None 💨 12 mph H 79%29.71 inHg

10:00 AM

Mostly cloudy

64° 💧 None 💨 13 mph H 73%29.71 inHg

11:00 AM

Mostly cloudy

64° 💧 None 💨 12 mph H 69%29.71 inHg

12:00 PM

Mostly cloudy

65° 💧 None 💨 10 mph H 66%29.71 inHg

1:00 PM

Mostly cloudy

67° 💧 None 💨 9 mph H 61%29.68 inHg

2:00 PM

Partly cloudy

69° 💧 None 💨 8 mph H 56%29.65 inHg

3:00 PM

Light rain

70° 💧 0.01 in 💨 11 mph H 53%29.62 inHg

4:00 PM

Heavy rain

63° 💧 0.18 in 💨 5 mph H 78%29.68 inHg

5:00 PM

Light rain

65° 💧 0.03 in 💨 6 mph H 66%29.65 inHg

6:00 PM

Mostly cloudy

63° 💧 None 💨 14 mph H 70%29.68 inHg

7:00 PM

Overcast

60° 💧 None 💨 10 mph H 76%29.71 inHg

8:00 PM

Partly cloudy night

58° 💧 None 💨 8 mph H 69%29.71 inHg

9:00 PM

Partly cloudy night

56° 💧 None 💨 11 mph H 71%29.74 inHg

10:00 PM

Mostly cloudy night

57° 💧 None 💨 22 mph H 67%29.74 inHg

11:00 PM

Moderate rain

53° 💧 0.13 in 💨 22 mph H 86%29.77 inHg

Tuesday

12:00 AM

Moderate rain

55° 💧 0.05 in 💨 27 mph H 78%29.77 inHg

1:00 AM

Overcast night

55° 💧 None 💨 34 mph H 72%29.83 inHg

2:00 AM

Overcast night

56° 💧 None 💨 30 mph H 71%29.83 inHg

3:00 AM

Overcast night

55° 💧 None 💨 27 mph H 71%29.85 inHg

4:00 AM

Overcast night

55° 💧 None 💨 24 mph H 66%29.85 inHg

5:00 AM

Mostly cloudy night

55° 💧 None 💨 19 mph H 62%29.88 inHg

6:00 AM

Mostly cloudy night

55° 💧 None 💨 16 mph H 60%29.91 inHg

7:00 AM

Sunny

55° 💧 None 💨 22 mph H 56%29.91 inHg

8:00 AM

Sunny

57° 💧 None 💨 18 mph H 55%29.94 inHg

9:00 AM

Sunny

59° 💧 None 💨 17 mph H 53%29.94 inHg

10:00 AM

Sunny

61° 💧 None 💨 23 mph H 50%29.97 inHg

11:00 AM

Sunny

62° 💧 None 💨 27 mph H 47%29.97 inHg

12:00 PM

Sunny

63° 💧 None 💨 26 mph H 45%30.00 inHg

1:00 PM

Mostly sunny

64° 💧 None 💨 25 mph H 45%30.00 inHg

2:00 PM

Partly cloudy

65° 💧 None 💨 24 mph H 44%30.03 inHg

3:00 PM

Partly cloudy

66° 💧 None 💨 22 mph H 42%30.03 inHg

4:00 PM

Mostly sunny

67° 💧 None 💨 20 mph H 39%30.03 inHg

5:00 PM

Mostly sunny

67° 💧 None 💨 19 mph H 38%30.03 inHg

6:00 PM

Mostly sunny

66° 💧 None 💨 15 mph H 42%30.03 inHg

7:00 PM

Partly cloudy

63° 💧 None 💨 10 mph H 49%30.06 inHg

8:00 PM

Partly cloudy night

59° 💧 None 💨 7 mph H 56%30.09 inHg

9:00 PM

Partly cloudy night

58° 💧 None 💨 7 mph H 57%30.12 inHg

10:00 PM

Mostly cloudy night

57° 💧 None 💨 5 mph H 58%30.12 inHg

11:00 PM

Partly cloudy night

56° 💧 None 💨 3 mph H 60%30.12 inHg

Wednesday

12:00 AM

Partly cloudy night

56° 💧 None 💨 5 mph H 60%30.15 inHg

In Roy and, more broadly, across the state of Montana: The evening will feature a mix of sun and clouds with mild temperatures around 64 degrees. Winds will be light, coming from the north at up to 7 mph, with occasional gusts reaching 12 mph. No rain is expected during the next few hours, and skies should remain relatively dry. Temperatures are expected to stay steady throughout the evening, providing comfortable conditions as the night progresses. Overall, it looks like a calm and mild evening for outdoor activities or relaxing after a busy day.

15-Day Weather Outlook for Roy

TomorrowTomorrow

Moderate rain 76°/53° 💧 0.11 in 💨 11 mph

Monday, Sep 7Mon Sep 7

Very heavy rain 70°/53° 💧 1.62 in 💨 22 mph

Tuesday, Sep 8Tue Sep 8

Moderate rain 66°/55° 💧 0.05 in 💨 27 mph

Wednesday, Sep 9Wed Sep 9

Mostly cloudy 78°/55° 💧 None 💨 9 mph

Thursday, Sep 10Thu Sep 10

Mostly sunny 82°/58° 💧 None 💨 20 mph

Friday, Sep 11Fri Sep 11

Sunny 70°/58° 💧 None 💨 12 mph

Saturday, Sep 12Sat Sep 12

Overcast 69°/52° 💧 None 💨 20 mph

Sunday, Sep 13Sun Sep 13

Mostly sunny 65°/48° 💧 None 💨 9 mph

Monday, Sep 14Mon Sep 14

Mostly cloudy 80°/51° 💧 None 💨 14 mph

Tuesday, Sep 15Tue Sep 15

Light rain 81°/62° 💧 0.01 in 💨 25 mph

Wednesday, Sep 16Wed Sep 16

Sunny 81°/58° 💧 None 💨 12 mph

Thursday, Sep 17Thu Sep 17

Light rain 67°/54° 💧 0.16 in 💨 23 mph

Friday, Sep 18Fri Sep 18

Moderate rain 54°/44° 💧 0.63 in 💨 15 mph

Saturday, Sep 19Sat Sep 19

Moderate rain 55°/40° 💧 0.18 in 💨 17 mph

Sunday, Sep 20Sun Sep 20

Sunny 73°/45° 💧 None 💨 11 mph

TEMPERATURE OUTLOOK

Temperature & Weather Trends in Roy

Vertical axis: °F · Color based on temperature

AIR QUALITY FORECAST

Air Quality Forecast for Roy

Hourly forecast · Updated every 2 hours

Fair

Nearest forecast value 1:00 AM

PM2.5 Fine particles Good 1,7µg/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 4,2µg/m³

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

O₃ Ozone Fair 75,1µg/m³

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

NO₂ Nitrogen dioxide Good 1,2µg/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 Roy

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 6,3High 🙂Fair

Tomorrow UV 6,2High 🙂Fair

Monday UV 6,0High 🙂Fair

Tuesday UV 5,5Moderate 🙂Fair

Wednesday UV 7,0High —Unavailable

Thursday UV 7,0High —Unavailable

Friday UV 6,0High —Unavailable

Hourly UV index today

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

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 Roy

Vertical axis: mph · Horizontal axis: hours

Sustained wind Max gusts

NIGHT SKY · ROY, MONTANA

Tonight's Stargazing & Shooting Stars

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

94/100Best-hour score

BEST TIME TONIGHT 1:00 AM–2:00 AM Astronomical darkness: 9:39 PM–4:51 AM

☁ Cloud cover 7% Real hourly forecast for the best viewing hour.

☾ Moonlight 41% Last Quarter · Moon about 11° above the horizon at the best viewing hour.

☄ Meteor activity September ε-Perseids Reference ZHR 8 · Radiant 42° high at the best hour.

✦ Estimated visible meteors 1–3/hour Local estimate after weather, moonlight and radiant-height adjustments.

Chance ≥1 meteor in 30 min56%

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

AUG 28–SEP 5

AurigidsStart AUG 28 · Peak SEP 1 · End SEP 5 · ZHR 6 · 80% Moon at peak

ACTIVE NOW

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

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 Roy were last refreshed today at 12:51 AM. The current forecast period extends through 06/09/2026 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.