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Current weather in Gary is clear sky.

Where can I find the hourly weather forecast for Gary?

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

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

Now · 11:49 AM

Gary Weather & Hourly Forecast

United States · South Dakota · 57237

81°F

Sunny

Feels like: 73°F

💧 Humidity 29% 🌡 Pressure 29.97 inHg 💨 Wind 13 mph 👁 Visibility 32.7 mi ☁ Clouds 3% ☀️ UV index 3.7 · Moderate 🌅 Sunrise — 🌇 Sunset —

Hourly Forecast for Gary

Today

12:00 PM

Sunny

81° 💧 None 💨 13 mph H 29%29.97 inHg

3:00 PM

Mostly sunny

85° 💧 None 💨 15 mph H 26%29.88 inHg

6:00 PM

Partly cloudy

82° 💧 None 💨 15 mph H 32%29.83 inHg

9:00 PM

Clear night

75° 💧 None 💨 15 mph H 47%29.83 inHg

Tomorrow

12:00 AM

Clear night

71° 💧 None 💨 17 mph H 56%29.83 inHg

3:00 AM

Mostly cloudy night

70° 💧 None 💨 19 mph H 59%29.80 inHg

6:00 AM

Mostly cloudy night

69° 💧 None 💨 19 mph H 69%29.74 inHg

9:00 AM

Mostly cloudy

72° 💧 None 💨 19 mph H 72%29.71 inHg

12:00 PM

Overcast

82° 💧 None 💨 21 mph H 57%29.62 inHg

3:00 PM

Overcast

87° 💧 None 💨 24 mph H 47%29.56 inHg

6:00 PM

Sunny

83° 💧 0.001 in 💨 19 mph H 56%29.50 inHg

9:00 PM

Clear night

74° 💧 0.009 in 💨 12 mph H 75%29.59 inHg

Saturday

12:00 AM

Clear night

67° 💧 None 💨 16 mph H 76%29.77 inHg

3:00 AM

Clear night

63° 💧 None 💨 13 mph H 52%29.85 inHg

6:00 AM

Mostly clear night

58° 💧 None 💨 11 mph H 59%29.94 inHg

9:00 AM

Partly cloudy

62° 💧 None 💨 13 mph H 57%30.00 inHg

Today

12:00 PM

Sunny

81° 💧 None 💨 13 mph H 29%29.97 inHg

1:00 PM

Mostly sunny

83° 💧 None 💨 14 mph H 27%29.94 inHg

2:00 PM

Mostly sunny

84° 💧 None 💨 14 mph H 26%29.91 inHg

3:00 PM

Mostly sunny

85° 💧 None 💨 15 mph H 26%29.88 inHg

4:00 PM

Sunny

85° 💧 None 💨 16 mph H 27%29.85 inHg

5:00 PM

Mostly cloudy

84° 💧 None 💨 16 mph H 29%29.85 inHg

6:00 PM

Partly cloudy

82° 💧 None 💨 15 mph H 32%29.83 inHg

7:00 PM

Sunny

80° 💧 None 💨 15 mph H 37%29.83 inHg

8:00 PM

Clear night

76° 💧 None 💨 14 mph H 42%29.83 inHg

9:00 PM

Clear night

75° 💧 None 💨 15 mph H 47%29.83 inHg

10:00 PM

Clear night

73° 💧 None 💨 16 mph H 52%29.83 inHg

11:00 PM

Clear night

72° 💧 None 💨 16 mph H 54%29.83 inHg

Tomorrow

12:00 AM

Clear night

71° 💧 None 💨 17 mph H 56%29.83 inHg

1:00 AM

Clear night

71° 💧 None 💨 18 mph H 57%29.80 inHg

2:00 AM

Partly cloudy night

71° 💧 None 💨 19 mph H 57%29.80 inHg

3:00 AM

Mostly cloudy night

70° 💧 None 💨 19 mph H 59%29.80 inHg

4:00 AM

Mostly cloudy night

70° 💧 None 💨 19 mph H 62%29.77 inHg

5:00 AM

Partly cloudy night

69° 💧 None 💨 19 mph H 65%29.77 inHg

6:00 AM

Mostly cloudy night

69° 💧 None 💨 19 mph H 69%29.74 inHg

7:00 AM

Mostly cloudy

68° 💧 None 💨 19 mph H 74%29.74 inHg

8:00 AM

Mostly cloudy

69° 💧 None 💨 20 mph H 76%29.71 inHg

9:00 AM

Mostly cloudy

72° 💧 None 💨 19 mph H 72%29.71 inHg

10:00 AM

Mostly cloudy

75° 💧 None 💨 19 mph H 68%29.68 inHg

11:00 AM

Mostly cloudy

79° 💧 None 💨 19 mph H 62%29.68 inHg

12:00 PM

Overcast

82° 💧 None 💨 21 mph H 57%29.62 inHg

1:00 PM

Overcast

84° 💧 None 💨 21 mph H 53%29.59 inHg

2:00 PM

Overcast

86° 💧 None 💨 23 mph H 51%29.56 inHg

3:00 PM

Overcast

87° 💧 None 💨 24 mph H 47%29.56 inHg

4:00 PM

Overcast

87° 💧 None 💨 23 mph H 46%29.53 inHg

5:00 PM

Overcast

86° 💧 None 💨 24 mph H 50%29.50 inHg

6:00 PM

Sunny

83° 💧 0.001 in 💨 19 mph H 56%29.50 inHg

7:00 PM

Sunny

82° 💧 None 💨 24 mph H 59%29.47 inHg

8:00 PM

Clear night

77° 💧 None 💨 22 mph H 68%29.50 inHg

9:00 PM

Clear night

74° 💧 None 💨 12 mph H 75%29.59 inHg

10:00 PM

Light rain

69° 💧 0.009 in 💨 16 mph H 87%29.68 inHg

11:00 PM

Mostly clear night

68° 💧 0.000 in 💨 18 mph H 84%29.74 inHg

Saturday

12:00 AM

Clear night

67° 💧 None 💨 16 mph H 76%29.77 inHg

1:00 AM

Clear night

66° 💧 None 💨 13 mph H 59%29.80 inHg

2:00 AM

Clear night

64° 💧 None 💨 14 mph H 50%29.83 inHg

3:00 AM

Clear night

63° 💧 None 💨 13 mph H 52%29.85 inHg

4:00 AM

Clear night

61° 💧 None 💨 12 mph H 51%29.85 inHg

5:00 AM

Mostly clear night

59° 💧 None 💨 12 mph H 54%29.91 inHg

6:00 AM

Mostly clear night

58° 💧 None 💨 11 mph H 59%29.94 inHg

7:00 AM

Mostly sunny

58° 💧 None 💨 10 mph H 65%29.97 inHg

8:00 AM

Mostly sunny

59° 💧 None 💨 11 mph H 64%30.00 inHg

9:00 AM

Partly cloudy

62° 💧 None 💨 13 mph H 57%30.00 inHg

10:00 AM

Mostly cloudy

64° 💧 None 💨 14 mph H 51%30.00 inHg

11:00 AM

Mostly cloudy

65° 💧 None 💨 13 mph H 48%30.03 inHg

12:00 PM

Mostly cloudy

66° 💧 None 💨 12 mph H 46%30.03 inHg

1:00 PM

Sunny

69° 💧 None 💨 11 mph H 41%30.03 inHg

2:00 PM

Mostly sunny

72° 💧 None 💨 12 mph H 37%30.00 inHg

3:00 PM

Mostly cloudy

72° 💧 None 💨 12 mph H 35%30.00 inHg

4:00 PM

Mostly cloudy

72° 💧 None 💨 11 mph H 34%30.00 inHg

5:00 PM

Mostly sunny

72° 💧 None 💨 9 mph H 34%30.00 inHg

6:00 PM

Mostly sunny

71° 💧 None 💨 9 mph H 34%30.00 inHg

7:00 PM

Mostly sunny

70° 💧 None 💨 7 mph H 36%30.00 inHg

Sunday

4:00 AM

Overcast night

55° 💧 None 💨 4 mph H 69%30.09 inHg

7:00 AM

Light rain

55° 💧 None 💨 7 mph H 75%30.12 inHg

10:00 AM

Mostly cloudy

55° 💧 None 💨 10 mph H 84%30.12 inHg

1:00 PM

Overcast

63° 💧 None 💨 10 mph H 58%30.12 inHg

4:00 PM

Mostly cloudy

60° 💧 None 💨 10 mph H 70%30.06 inHg

7:00 PM

Partly cloudy

60° 💧 None 💨 11 mph H 66%30.06 inHg

10:00 PM

Clear night

57° 💧 None 💨 10 mph H 76%30.06 inHg

Monday

1:00 AM

Partly cloudy night

54° 💧 None 💨 10 mph H 86%30.06 inHg

4:00 AM

Overcast night

55° 💧 None 💨 12 mph H 85%30.00 inHg

7:00 AM

Light thunderstorms

54° 💧 None 💨 14 mph H 91%29.94 inHg

10:00 AM

Light thunderstorms

57° 💧 None 💨 14 mph H 93%29.83 inHg

1:00 PM

Overcast

69° 💧 None 💨 11 mph H 78%29.80 inHg

4:00 PM

Overcast

68° 💧 None 💨 12 mph H 80%29.77 inHg

7:00 PM

Sunny

67° 💧 None 💨 7 mph H 73%29.83 inHg

10:00 PM

Clear night

63° 💧 None 💨 12 mph H 64%29.88 inHg

Tuesday

1:00 AM

Clear night

60° 💧 None 💨 13 mph H 55%29.97 inHg

4:00 AM

Partly cloudy night

55° 💧 None 💨 11 mph H 68%30.06 inHg

7:00 AM

Mostly cloudy night

52° 💧 None 💨 8 mph H 76%30.15 inHg

10:00 AM

Overcast

58° 💧 None 💨 12 mph H 58%30.21 inHg

1:00 PM

Mostly cloudy

63° 💧 None 💨 10 mph H 51%30.24 inHg

4:00 PM

Overcast

65° 💧 None 💨 10 mph H 49%30.21 inHg

7:00 PM

Sunny

63° 💧 None 💨 5 mph H 56%30.21 inHg

10:00 PM

Mostly cloudy night

56° 💧 None 💨 2 mph H 71%30.27 inHg

Wednesday

1:00 AM

Mostly clear night

54° 💧 None 💨 2 mph H 76%30.27 inHg

7:00 AM

Mostly clear night

53° 💧 None 💨 3 mph H 75%30.27 inHg

1:00 PM

Partly cloudy

49° 💧 None 💨 4 mph H 88%30.30 inHg

7:00 PM

Overcast

64° 💧 None 💨 7 mph H 47%30.27 inHg

Thursday

1:00 AM

Light rain

62° 💧 None 💨 4 mph H 56%30.21 inHg

7:00 AM

Mostly cloudy night

53° 💧 None 💨 5 mph H 90%30.21 inHg

1:00 PM

Sunny

53° 💧 None 💨 9 mph H 89%30.24 inHg

7:00 PM

Sunny

66° 💧 None 💨 13 mph H 51%30.33 inHg

Friday

1:00 AM

Clear night

65° 💧 None 💨 5 mph H 50%30.30 inHg

7:00 AM

Clear night

54° 💧 None 💨 3 mph H 74%30.30 inHg

1:00 PM

Sunny

51° 💧 None 💨 8 mph H 81%30.27 inHg

7:00 PM

Sunny

72° 💧 None 💨 11 mph H 42%30.21 inHg

Saturday

1:00 AM

Clear night

70° 💧 None 💨 8 mph H 54%30.09 inHg

7:00 AM

Clear night

62° 💧 None 💨 15 mph H 69%30.09 inHg

1:00 PM

Sunny

58° 💧 None 💨 14 mph H 78%30.06 inHg

7:00 PM

Sunny

76° 💧 None 💨 2 mph H 49%30.06 inHg

Sunday

1:00 AM

Clear night

75° 💧 None 💨 5 mph H 57%30.03 inHg

7:00 AM

Clear night

64° 💧 None 💨 9 mph H 81%30.06 inHg

1:00 PM

Sunny

60° 💧 None 💨 11 mph H 90%30.09 inHg

7:00 PM

Sunny

79° 💧 None 💨 15 mph H 47%30.09 inHg

Monday

1:00 AM

Clear night

74° 💧 None 💨 12 mph H 48%30.06 inHg

7:00 AM

Partly cloudy night

63° 💧 None 💨 14 mph H 76%30.12 inHg

1:00 PM

Sunny

58° 💧 None 💨 14 mph H 83%30.15 inHg

7:00 PM

Partly cloudy

74° 💧 None 💨 17 mph H 45%30.12 inHg

Tuesday

1:00 AM

Partly cloudy night

71° 💧 None 💨 13 mph H 55%30.09 inHg

7:00 AM

Mostly clear night

62° 💧 None 💨 15 mph H 80%30.18 inHg

1:00 PM

Mostly cloudy

59° 💧 None 💨 14 mph H 88%30.18 inHg

7:00 PM

Mostly cloudy

77° 💧 None 💨 16 mph H 47%30.18 inHg

Wednesday

1:00 AM

Mostly cloudy night

75° 💧 None 💨 12 mph H 49%30.12 inHg

7:00 AM

Overcast night

69° 💧 None 💨 13 mph H 62%30.18 inHg

1:00 PM

Sunny

64° 💧 None 💨 8 mph H 80%30.24 inHg

7:00 PM

Sunny

77° 💧 None 💨 8 mph H 43%30.24 inHg

Thursday

1:00 AM

Clear night

75° 💧 None 💨 5 mph H 39%30.15 inHg

7:00 AM

Clear night

62° 💧 None 💨 5 mph H 61%30.15 inHg

1:00 PM

Sunny

61° 💧 None 💨 7 mph H 85%30.12 inHg

7:00 PM

Mostly sunny

81° 💧 None 💨 14 mph H 46%30.06 inHg

Friday

1:00 AM

Mostly cloudy night

77° 💧 None 💨 12 mph H 32%29.97 inHg

In Gary and, more broadly, across the state of South Dakota: The rest of the day will feature clear skies with mild to warm temperatures ranging from 70 to 81 degrees Fahrenheit. Winds are expected to be moderate, coming from the south at up to 17 mph, with gusts reaching 21 mph. No precipitation is anticipated, so outdoor plans should be quite comfortable. The weather remains stable through the afternoon, providing a pleasant day for any activities. As the temperatures stay within this range, it should be a nice, mild evening ahead.

15-Day Weather Outlook for Gary

TomorrowTomorrow

Partly cloudy 87°/68° 💧 None 💨 24 mph

Saturday, Sep 12Sat Sep 12

Mostly sunny 82°/58° 💧 None 💨 24 mph

Sunday, Sep 13Sun Sep 13

Light rain 70°/55° 💧 0.224 in 💨 10 mph

Monday, Sep 14Mon Sep 14

Light thunderstorms 69°/54° 💧 0.173 in 💨 14 mph

Tuesday, Sep 15Tue Sep 15

Partly cloudy 67°/52° 💧 0.001 in 💨 13 mph

Wednesday, Sep 16Wed Sep 16

Mostly cloudy 63°/49° 💧 None 💨 5 mph

Thursday, Sep 17Thu Sep 17

Light rain 64°/53° 💧 0.093 in 💨 9 mph

Friday, Sep 18Fri Sep 18

Sunny 66°/51° 💧 None 💨 13 mph

Saturday, Sep 19Sat Sep 19

Sunny 72°/58° 💧 None 💨 15 mph

Sunday, Sep 20Sun Sep 20

Sunny 76°/60° 💧 None 💨 11 mph

Monday, Sep 21Mon Sep 21

Partly cloudy 79°/58° 💧 None 💨 15 mph

Tuesday, Sep 22Tue Sep 22

Partly cloudy 74°/59° 💧 None 💨 17 mph

Wednesday, Sep 23Wed Sep 23

Mostly cloudy 77°/64° 💧 None 💨 16 mph

Thursday, Sep 24Thu Sep 24

Sunny 77°/61° 💧 None 💨 8 mph

Friday, Sep 25Fri Sep 25

Mostly sunny 81°/77° 💧 None 💨 14 mph

TEMPERATURE OUTLOOK

Temperature & Weather Trends in Gary

Vertical axis: °F · Color based on temperature

AIR QUALITY FORECAST

Air Quality Forecast for Gary

Hourly forecast · Updated every 2 hours

Fair

Nearest forecast value 12:00 PM

PM2.5 Fine particles Good 1,3µg/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 68,6µg/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 Gary

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 5,6Moderate 🙂Fair

Saturday UV 5,3Moderate 🙂Fair

Sunday UV 2,3Low 🙂Fair

Monday UV 4,0Moderate 🙂Fair

Tuesday UV 5,0Moderate —Unavailable

Wednesday UV 6,0High —Unavailable

Hourly UV index today

12:00 PMUV 5,2 1:00 PMUV 6,1 2:00 PMUV 6,1 3:00 PMUV 5,2 4:00 PMUV 3,6 5:00 PMUV 2,0 6:00 PMUV 0,8 7:00 PMUV 0,2

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.

Stay hydrated

Drink water regularly, especially during physical activity or prolonged sun exposure. Dry air can increase hydration needs.

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 Gary

Vertical axis: mph · Horizontal axis: hours

Sustained wind Max gusts

NIGHT SKY · GARY, SOUTH DAKOTA

Tonight's Stargazing & Shooting Stars

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

99/100Best-hour score

BEST TIME TONIGHT 1:00 AM–2:00 AM Astronomical darkness: 9:27 PM–5:19 AM

☁ Cloud cover 1% Real hourly forecast for the best viewing hour.

☾ Moonlight 0% New Moon · Moon below the horizon at the best viewing hour.

☄ Meteor activity September ε-Perseids Reference ZHR 8 · Radiant 44° 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 min68%

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 Gary were last refreshed today at 11:49 AM. The current forecast period extends through 12/09/2026 at 9:00 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.