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Current weather in Mason is clear sky.

Where can I find the hourly weather forecast for Mason?

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

Is the weather forecast for Mason updated regularly?

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

Now · 5:46 PM

Mason Weather & Hourly Forecast

United States · Illinois · 62443

81°F

Sunny

Feels like: 78°F

💧 Humidity 43% 🌡 Pressure 30.06 inHg 💨 Wind 8 mph 👁 Visibility 24.5 mi ☁ Clouds 0% ☀️ UV index 1.6 · Low 🌅 Sunrise — 🌇 Sunset —

Hourly Forecast for Mason

Today

6:00 PM

Sunny

81° 💧 None 💨 8 mph H 43%30.06 inHg

9:00 PM

Clear night

73° 💧 None 💨 7 mph H 59%30.09 inHg

Tomorrow

12:00 AM

Clear night

69° 💧 None 💨 5 mph H 72%30.09 inHg

3:00 AM

Clear night

66° 💧 None 💨 3 mph H 84%30.09 inHg

6:00 AM

Mostly cloudy night

64° 💧 None 💨 3 mph H 89%30.12 inHg

9:00 AM

Overcast

74° 💧 None 💨 3 mph H 69%30.12 inHg

12:00 PM

Overcast

86° 💧 None 💨 5 mph H 49%30.12 inHg

3:00 PM

Mostly sunny

89° 💧 None 💨 5 mph H 41%30.06 inHg

6:00 PM

Sunny

88° 💧 None 💨 3 mph H 46%30.03 inHg

9:00 PM

Clear night

78° 💧 None 💨 2 mph H 68%30.06 inHg

Wednesday

12:00 AM

Clear night

77° 💧 None 💨 7 mph H 75%30.06 inHg

3:00 AM

Clear night

75° 💧 None 💨 6 mph H 78%30.03 inHg

6:00 AM

Clear night

74° 💧 None 💨 8 mph H 82%30.06 inHg

9:00 AM

Sunny

82° 💧 None 💨 9 mph H 67%30.06 inHg

12:00 PM

Sunny

93° 💧 0.125 in 💨 11 mph H 45%30.03 inHg

3:00 PM

Light rain

88° 💧 0.073 in 💨 4 mph H 61%29.97 inHg

Today

6:00 PM

Sunny

81° 💧 None 💨 8 mph H 43%30.06 inHg

7:00 PM

Sunny

77° 💧 None 💨 5 mph H 51%30.06 inHg

8:00 PM

Clear night

74° 💧 None 💨 7 mph H 56%30.06 inHg

9:00 PM

Clear night

73° 💧 None 💨 7 mph H 59%30.09 inHg

10:00 PM

Clear night

72° 💧 None 💨 6 mph H 62%30.09 inHg

11:00 PM

Clear night

71° 💧 None 💨 6 mph H 67%30.09 inHg

Tomorrow

12:00 AM

Clear night

69° 💧 None 💨 5 mph H 72%30.09 inHg

1:00 AM

Clear night

68° 💧 None 💨 5 mph H 77%30.09 inHg

2:00 AM

Clear night

67° 💧 None 💨 4 mph H 81%30.06 inHg

3:00 AM

Clear night

66° 💧 None 💨 3 mph H 84%30.09 inHg

4:00 AM

Mostly clear night

65° 💧 None 💨 4 mph H 86%30.09 inHg

5:00 AM

Mostly cloudy night

65° 💧 None 💨 4 mph H 88%30.09 inHg

6:00 AM

Mostly cloudy night

64° 💧 None 💨 3 mph H 89%30.12 inHg

7:00 AM

Overcast

65° 💧 None 💨 4 mph H 88%30.12 inHg

8:00 AM

Overcast

70° 💧 None 💨 4 mph H 79%30.12 inHg

9:00 AM

Overcast

74° 💧 None 💨 3 mph H 69%30.12 inHg

10:00 AM

Overcast

79° 💧 None 💨 4 mph H 61%30.12 inHg

11:00 AM

Overcast

83° 💧 None 💨 4 mph H 54%30.12 inHg

12:00 PM

Overcast

86° 💧 None 💨 5 mph H 49%30.12 inHg

1:00 PM

Overcast

87° 💧 None 💨 5 mph H 47%30.09 inHg

2:00 PM

Mostly cloudy

88° 💧 None 💨 5 mph H 44%30.06 inHg

3:00 PM

Mostly sunny

89° 💧 None 💨 5 mph H 41%30.06 inHg

4:00 PM

Mostly sunny

90° 💧 None 💨 4 mph H 41%30.03 inHg

5:00 PM

Sunny

89° 💧 None 💨 4 mph H 43%30.03 inHg

6:00 PM

Sunny

88° 💧 None 💨 3 mph H 46%30.03 inHg

7:00 PM

Sunny

84° 💧 None 💨 1 mph H 58%30.03 inHg

8:00 PM

Clear night

80° 💧 None 💨 1 mph H 65%30.03 inHg

9:00 PM

Clear night

78° 💧 None 💨 2 mph H 68%30.06 inHg

10:00 PM

Clear night

78° 💧 None 💨 5 mph H 70%30.09 inHg

11:00 PM

Clear night

77° 💧 None 💨 6 mph H 73%30.09 inHg

Wednesday

12:00 AM

Clear night

77° 💧 None 💨 7 mph H 75%30.06 inHg

1:00 AM

Clear night

76° 💧 None 💨 6 mph H 75%30.06 inHg

2:00 AM

Clear night

75° 💧 None 💨 7 mph H 75%30.03 inHg

3:00 AM

Clear night

75° 💧 None 💨 6 mph H 78%30.03 inHg

4:00 AM

Clear night

74° 💧 None 💨 6 mph H 81%30.06 inHg

5:00 AM

Clear night

74° 💧 None 💨 6 mph H 83%30.06 inHg

6:00 AM

Clear night

74° 💧 None 💨 8 mph H 82%30.06 inHg

7:00 AM

Sunny

75° 💧 None 💨 8 mph H 81%30.06 inHg

8:00 AM

Sunny

78° 💧 None 💨 7 mph H 75%30.06 inHg

9:00 AM

Sunny

82° 💧 None 💨 9 mph H 67%30.06 inHg

10:00 AM

Sunny

86° 💧 None 💨 10 mph H 59%30.06 inHg

11:00 AM

Sunny

90° 💧 None 💨 10 mph H 52%30.03 inHg

12:00 PM

Sunny

93° 💧 None 💨 11 mph H 45%30.03 inHg

1:00 PM

Light thunderstorms

84° 💧 0.068 in 💨 9 mph H 72%30.06 inHg

2:00 PM

Light thunderstorms

81° 💧 0.057 in 💨 8 mph H 81%30.03 inHg

3:00 PM

Light rain

88° 💧 0.017 in 💨 4 mph H 61%29.97 inHg

4:00 PM

Light rain

85° 💧 0.029 in 💨 11 mph H 69%29.97 inHg

5:00 PM

Light rain

81° 💧 0.026 in 💨 5 mph H 82%29.97 inHg

6:00 PM

Partly cloudy

83° 💧 0.000 in 💨 5 mph H 79%29.94 inHg

7:00 PM

Mostly sunny

80° 💧 None 💨 6 mph H 84%29.94 inHg

8:00 PM

Mostly clear night

78° 💧 None 💨 5 mph H 88%29.94 inHg

9:00 PM

Mostly clear night

78° 💧 None 💨 5 mph H 89%29.97 inHg

10:00 PM

Mostly clear night

78° 💧 None 💨 5 mph H 88%29.97 inHg

11:00 PM

Mostly cloudy night

78° 💧 0.002 in 💨 8 mph H 85%29.97 inHg

Thursday

12:00 AM

Mostly cloudy night

77° 💧 0.001 in 💨 8 mph H 86%29.97 inHg

1:00 AM

Mostly cloudy night

76° 💧 0.000 in 💨 6 mph H 90%29.94 inHg

2:00 AM

Mostly cloudy night

75° 💧 None 💨 5 mph H 93%29.94 inHg

3:00 AM

Mostly cloudy night

74° 💧 0.000 in 💨 3 mph H 96%29.94 inHg

4:00 AM

Light thunderstorms

74° 💧 0.045 in 💨 5 mph H 98%29.97 inHg

5:00 AM

Light rain

74° 💧 0.034 in 💨 5 mph H 99%29.94 inHg

6:00 AM

Light thunderstorms

73° 💧 0.059 in 💨 5 mph H 99%29.97 inHg

7:00 AM

Thunderstorms

73° 💧 0.204 in 💨 4 mph H 99%29.97 inHg

10:00 AM

Overcast

74° 💧 None 💨 5 mph H 95%30.00 inHg

1:00 PM

Light rain

79° 💧 None 💨 3 mph H 81%29.97 inHg

4:00 PM

Light rain

80° 💧 None 💨 6 mph H 75%29.91 inHg

7:00 PM

Overcast

77° 💧 None 💨 6 mph H 71%29.91 inHg

10:00 PM

Overcast night

72° 💧 None 💨 6 mph H 77%29.97 inHg

Friday

1:00 AM

Overcast night

68° 💧 None 💨 6 mph H 82%30.00 inHg

4:00 AM

Clear night

65° 💧 None 💨 6 mph H 85%29.97 inHg

7:00 AM

Sunny

63° 💧 None 💨 6 mph H 89%30.00 inHg

10:00 AM

Sunny

73° 💧 None 💨 6 mph H 68%30.00 inHg

1:00 PM

Mostly cloudy

80° 💧 None 💨 6 mph H 62%29.94 inHg

4:00 PM

Mostly sunny

82° 💧 None 💨 4 mph H 56%29.88 inHg

7:00 PM

Mostly sunny

77° 💧 None 💨 4 mph H 71%29.85 inHg

10:00 PM

Clear night

74° 💧 None 💨 5 mph H 76%29.91 inHg

Saturday

1:00 AM

Clear night

70° 💧 None 💨 5 mph H 96%29.88 inHg

4:00 AM

Clear night

69° 💧 None 💨 3 mph H 98%29.91 inHg

7:00 AM

Sunny

69° 💧 None 💨 3 mph H 100%29.94 inHg

10:00 AM

Mostly cloudy

80° 💧 None 💨 6 mph H 77%29.94 inHg

1:00 PM

Mostly sunny

85° 💧 None 💨 3 mph H 63%29.94 inHg

4:00 PM

Mostly sunny

87° 💧 None 💨 4 mph H 57%29.91 inHg

7:00 PM

Mostly cloudy

81° 💧 None 💨 2 mph H 75%29.94 inHg

10:00 PM

Mostly clear night

76° 💧 None 💨 5 mph H 87%30.00 inHg

Sunday

1:00 AM

Clear night

73° 💧 None 💨 3 mph H 97%30.00 inHg

4:00 AM

Overcast night

71° 💧 None 💨 1 mph H 100%30.03 inHg

7:00 AM

Overcast

72° 💧 None 💨 3 mph H 100%30.03 inHg

1:00 PM

Light rain

86° 💧 None 💨 7 mph H 64%30.03 inHg

7:00 PM

Sunny

82° 💧 None 💨 5 mph H 76%29.97 inHg

Monday

1:00 AM

Clear night

76° 💧 None 💨 6 mph H 92%30.00 inHg

7:00 AM

Mostly cloudy

73° 💧 None 💨 5 mph H 95%30.03 inHg

1:00 PM

Mostly sunny

89° 💧 None 💨 10 mph H 57%29.97 inHg

7:00 PM

Sunny

84° 💧 None 💨 10 mph H 65%29.85 inHg

Tuesday

1:00 AM

Mostly clear night

79° 💧 None 💨 9 mph H 83%29.94 inHg

7:00 AM

Mostly sunny

74° 💧 None 💨 7 mph H 92%30.00 inHg

1:00 PM

Mostly sunny

79° 💧 None 💨 9 mph H 49%30.09 inHg

7:00 PM

Mostly sunny

74° 💧 None 💨 6 mph H 49%30.12 inHg

Wednesday

1:00 AM

Clear night

65° 💧 None 💨 7 mph H 71%30.24 inHg

7:00 AM

Sunny

60° 💧 None 💨 7 mph H 85%30.30 inHg

1:00 PM

Sunny

78° 💧 None 💨 8 mph H 46%30.33 inHg

7:00 PM

Sunny

73° 💧 None 💨 6 mph H 53%30.27 inHg

Thursday

1:00 AM

Clear night

63° 💧 None 💨 5 mph H 73%30.30 inHg

7:00 AM

Sunny

59° 💧 None 💨 6 mph H 82%30.36 inHg

1:00 PM

Sunny

78° 💧 None 💨 8 mph H 38%30.30 inHg

7:00 PM

Sunny

71° 💧 None 💨 3 mph H 52%30.18 inHg

Friday

1:00 AM

Mostly cloudy night

61° 💧 None 💨 4 mph H 78%30.18 inHg

7:00 AM

Overcast

58° 💧 None 💨 3 mph H 88%30.15 inHg

1:00 PM

Overcast

79° 💧 None 💨 2 mph H 45%30.12 inHg

7:00 PM

Partly cloudy night

73° 💧 None 💨 2 mph H 59%30.03 inHg

Saturday

1:00 AM

Mostly cloudy night

65° 💧 None 💨 4 mph H 74%30.03 inHg

7:00 AM

Overcast

65° 💧 None 💨 7 mph H 84%30.03 inHg

1:00 PM

Overcast

78° 💧 None 💨 7 mph H 57%30.00 inHg

7:00 PM

Moderate rain

67° 💧 None 💨 10 mph H 97%29.97 inHg

Sunday

1:00 AM

Heavy rain

65° 💧 None 💨 6 mph H 98%29.97 inHg

7:00 AM

Overcast

63° 💧 None 💨 7 mph H 96%30.00 inHg

1:00 PM

Partly cloudy

77° 💧 None 💨 7 mph H 63%30.00 inHg

7:00 PM

Clear night

73° 💧 None 💨 1 mph H 76%29.97 inHg

Monday

1:00 AM

Mostly clear night

64° 💧 None 💨 4 mph H 86%30.03 inHg

7:00 AM

Overcast

63° 💧 None 💨 6 mph H 70%30.06 inHg

1:00 PM

Moderate rain

67° 💧 None 💨 6 mph H 95%30.03 inHg

7:00 PM

Moderate rain

68° 💧 None 💨 10 mph H 96%29.91 inHg

Tuesday

1:00 AM

Light thunderstorms

67° 💧 None 💨 4 mph H 100%29.85 inHg

7:00 AM

Overcast

69° 💧 None 💨 6 mph H 99%29.88 inHg

In Mason and, more broadly, across the state of Illinois: The afternoon will remain mostly sunny with a few clouds drifting through. Temperatures are expected to stay mild to warm, ranging from the mid-60s to low 80s. Winds will be moderate from the east at around 10 mph, with occasional gusts reaching 22 mph. As evening approaches, skies will stay mostly clear with little change in temperature or wind conditions. No precipitation is anticipated, making for a dry and pleasant evening. Temperatures will gradually cool into the upper 60s to low 70s, providing a comfortable end to the day. Overall, residents can expect a calm and clear evening with mild temperatures and gentle breezes.

15-Day Weather Outlook for Mason

TomorrowTomorrow

Mostly sunny 90°/64° 💧 None 💨 7 mph

Wednesday, Sep 9Wed Sep 9

Light thunderstorms 93°/74° 💧 None 💨 11 mph

Thursday, Sep 10Thu Sep 10

Light thunderstorms 80°/73° 💧 0.820 in 💨 8 mph

Friday, Sep 11Fri Sep 11

Overcast 82°/63° 💧 0.014 in 💨 6 mph

Saturday, Sep 12Sat Sep 12

Mostly sunny 87°/69° 💧 0.006 in 💨 6 mph

Sunday, Sep 13Sun Sep 13

Light rain 86°/71° 💧 0.014 in 💨 7 mph

Monday, Sep 14Mon Sep 14

Mostly sunny 89°/73° 💧 0.023 in 💨 10 mph

Tuesday, Sep 15Tue Sep 15

Mostly sunny 84°/74° 💧 0.025 in 💨 10 mph

Wednesday, Sep 16Wed Sep 16

Mostly sunny 78°/60° 💧 None 💨 8 mph

Thursday, Sep 17Thu Sep 17

Sunny 78°/59° 💧 None 💨 8 mph

Friday, Sep 18Fri Sep 18

Mostly cloudy 79°/58° 💧 None 💨 4 mph

Saturday, Sep 19Sat Sep 19

Mostly cloudy 78°/65° 💧 0.004 in 💨 7 mph

Sunday, Sep 20Sun Sep 20

Heavy rain 77°/63° 💧 1.538 in 💨 10 mph

Monday, Sep 21Mon Sep 21

Moderate rain 73°/63° 💧 0.459 in 💨 6 mph

Tuesday, Sep 22Tue Sep 22

Light thunderstorms 69°/67° 💧 2.375 in 💨 10 mph

TEMPERATURE OUTLOOK

Temperature & Weather Trends in Mason

Vertical axis: °F · Color based on temperature

AIR QUALITY FORECAST

Air Quality Forecast for Mason

Hourly forecast · Updated every 2 hours

Moderate

Nearest forecast value 6:00 PM

PM2.5 Fine particles Good 7,5µg/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 8,1µg/m³

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

O₃ Ozone Moderate 102,8µg/m³

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

NO₂ Nitrogen dioxide Good 1,6µg/m³

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

Sensitive people should reduce strenuous and prolonged outdoor exertion.

UV & HEALTH

UV, Sun & Health Outlook in Mason

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 7,9High 😐Moderate

Tomorrow UV 7,9High 😐Moderate

Wednesday UV 7,9High 🙂Fair

Thursday UV 4,0Moderate 🙂Fair

Friday UV 6,3High 🙂Fair

Saturday UV 6,0High —Unavailable

Sunday UV 8,0Very high —Unavailable

Hourly UV index today

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

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.

Caution for sensitive people

People with respiratory or cardiovascular conditions should reduce prolonged outdoor exertion.

Stay hydrated

Drink water regularly, especially during physical activity or prolonged sun exposure.

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 Mason

Vertical axis: mph · Horizontal axis: hours

Sustained wind Max gusts

NIGHT SKY · MASON, ILLINOIS

Tonight's Stargazing & Shooting Stars

Excellent observing conditions. Best local viewing window: 2:00 AM–3:00 AM.

100/100Best-hour score

BEST TIME TONIGHT 2:00 AM–3:00 AM Astronomical darkness: 8:47 PM–4:58 AM

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

☾ Moonlight 14% Waning Crescent · Moon below the horizon at the best viewing hour.

☄ Meteor activity September ε-Perseids Reference ZHR 8 · Radiant 56° high at the best hour.

✦ Estimated visible meteors 1–4/hour Local estimate after weather, moonlight and radiant-height adjustments.

Chance ≥1 meteor in 30 min75%

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 Mason were last refreshed today at 5:46 PM. The current forecast period extends through 09/09/2026 at 3:00 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.