What is the weather in Sinai right now?

Current weather in Sinai is overcast clouds.

Where can I find the hourly weather forecast for Sinai?

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

Is the weather forecast for Sinai updated regularly?

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

Now · 11:10 AM

Sinai Weather & Hourly Forecast

United States · South Dakota · 57061

75°F

Overcast

Feels like: 71°F

💧 Humidity 79% 🌡 Pressure 29.91 inHg 💨 Wind 18 mph 👁 Visibility 17.5 mi ☁ Clouds 100% ☀️ UV index 3.1 · Moderate 🌅 Sunrise — 🌇 Sunset —

Hourly Forecast for Sinai

Today

12:00 PM

Overcast

76° 💧 0.012 in 💨 18 mph H 76%29.91 inHg

3:00 PM

Light thunderstorms

74° 💧 0.059 in 💨 15 mph H 90%29.85 inHg

6:00 PM

Mostly cloudy

80° 💧 0.002 in 💨 17 mph H 76%29.77 inHg

9:00 PM

Light thunderstorms

76° 💧 0.058 in 💨 16 mph H 89%29.80 inHg

Tomorrow

12:00 AM

Mostly cloudy night

75° 💧 0.003 in 💨 15 mph H 88%29.80 inHg

3:00 AM

Mostly cloudy night

75° 💧 None 💨 15 mph H 84%29.80 inHg

6:00 AM

Overcast night

73° 💧 None 💨 10 mph H 80%29.83 inHg

9:00 AM

Overcast

75° 💧 None 💨 10 mph H 74%29.85 inHg

12:00 PM

Overcast

82° 💧 None 💨 9 mph H 66%29.85 inHg

3:00 PM

Mostly sunny

85° 💧 None 💨 6 mph H 60%29.85 inHg

6:00 PM

Mostly sunny

80° 💧 None 💨 12 mph H 47%29.88 inHg

9:00 PM

Clear night

73° 💧 None 💨 3 mph H 54%29.91 inHg

Wednesday

12:00 AM

Clear night

68° 💧 None 💨 7 mph H 62%29.97 inHg

3:00 AM

Clear night

68° 💧 None 💨 10 mph H 47%29.97 inHg

6:00 AM

Clear night

62° 💧 None 💨 5 mph H 64%30.03 inHg

9:00 AM

Sunny

68° 💧 None 💨 10 mph H 60%30.09 inHg

Today

12:00 PM

Overcast

76° 💧 0.000 in 💨 18 mph H 76%29.91 inHg

1:00 PM

Overcast

78° 💧 0.000 in 💨 17 mph H 72%29.88 inHg

2:00 PM

Light thunderstorms

78° 💧 0.011 in 💨 9 mph H 74%29.91 inHg

3:00 PM

Light thunderstorms

74° 💧 0.056 in 💨 15 mph H 90%29.85 inHg

4:00 PM

Partly cloudy

79° 💧 0.004 in 💨 15 mph H 76%29.83 inHg

5:00 PM

Mostly cloudy

80° 💧 None 💨 18 mph H 73%29.80 inHg

6:00 PM

Mostly cloudy

80° 💧 None 💨 17 mph H 76%29.77 inHg

7:00 PM

Mostly cloudy

79° 💧 None 💨 16 mph H 79%29.77 inHg

8:00 PM

Overcast night

77° 💧 0.002 in 💨 17 mph H 82%29.80 inHg

9:00 PM

Light thunderstorms

76° 💧 0.042 in 💨 16 mph H 89%29.80 inHg

10:00 PM

Light rain

75° 💧 0.016 in 💨 17 mph H 90%29.83 inHg

11:00 PM

Mostly cloudy night

75° 💧 0.001 in 💨 17 mph H 89%29.80 inHg

Tomorrow

12:00 AM

Mostly cloudy night

75° 💧 0.003 in 💨 15 mph H 88%29.80 inHg

1:00 AM

Mostly cloudy night

75° 💧 None 💨 15 mph H 87%29.80 inHg

2:00 AM

Overcast night

75° 💧 None 💨 15 mph H 85%29.80 inHg

3:00 AM

Mostly cloudy night

75° 💧 None 💨 15 mph H 84%29.80 inHg

4:00 AM

Mostly cloudy night

75° 💧 None 💨 13 mph H 82%29.80 inHg

5:00 AM

Overcast night

74° 💧 None 💨 11 mph H 80%29.80 inHg

6:00 AM

Overcast night

73° 💧 None 💨 10 mph H 80%29.83 inHg

7:00 AM

Overcast

73° 💧 None 💨 10 mph H 79%29.83 inHg

8:00 AM

Overcast

74° 💧 None 💨 9 mph H 77%29.85 inHg

9:00 AM

Overcast

75° 💧 None 💨 10 mph H 74%29.85 inHg

10:00 AM

Mostly cloudy

77° 💧 None 💨 10 mph H 75%29.85 inHg

11:00 AM

Mostly cloudy

79° 💧 None 💨 11 mph H 70%29.85 inHg

12:00 PM

Overcast

82° 💧 None 💨 9 mph H 66%29.85 inHg

1:00 PM

Mostly cloudy

82° 💧 None 💨 7 mph H 67%29.85 inHg

2:00 PM

Mostly sunny

84° 💧 None 💨 6 mph H 65%29.85 inHg

3:00 PM

Mostly sunny

85° 💧 None 💨 6 mph H 60%29.85 inHg

4:00 PM

Partly cloudy

85° 💧 None 💨 8 mph H 59%29.85 inHg

5:00 PM

Partly cloudy

83° 💧 None 💨 12 mph H 54%29.85 inHg

6:00 PM

Mostly sunny

80° 💧 None 💨 12 mph H 47%29.88 inHg

7:00 PM

Partly cloudy

78° 💧 None 💨 8 mph H 49%29.88 inHg

8:00 PM

Clear night

74° 💧 None 💨 5 mph H 49%29.91 inHg

9:00 PM

Clear night

73° 💧 None 💨 3 mph H 54%29.91 inHg

10:00 PM

Clear night

71° 💧 None 💨 1 mph H 56%29.94 inHg

11:00 PM

Clear night

68° 💧 None 💨 2 mph H 64%29.97 inHg

Wednesday

12:00 AM

Clear night

68° 💧 None 💨 7 mph H 62%29.97 inHg

1:00 AM

Clear night

70° 💧 None 💨 10 mph H 51%29.97 inHg

2:00 AM

Clear night

68° 💧 None 💨 9 mph H 47%29.94 inHg

3:00 AM

Clear night

68° 💧 None 💨 10 mph H 47%29.97 inHg

4:00 AM

Clear night

67° 💧 None 💨 11 mph H 48%30.00 inHg

5:00 AM

Clear night

65° 💧 None 💨 8 mph H 53%30.00 inHg

6:00 AM

Clear night

62° 💧 None 💨 5 mph H 64%30.03 inHg

7:00 AM

Sunny

61° 💧 None 💨 4 mph H 72%30.03 inHg

8:00 AM

Sunny

64° 💧 None 💨 6 mph H 69%30.06 inHg

9:00 AM

Sunny

68° 💧 None 💨 10 mph H 60%30.09 inHg

10:00 AM

Sunny

69° 💧 None 💨 14 mph H 51%30.09 inHg

11:00 AM

Sunny

70° 💧 None 💨 13 mph H 50%30.12 inHg

12:00 PM

Sunny

71° 💧 None 💨 13 mph H 49%30.12 inHg

1:00 PM

Sunny

72° 💧 None 💨 12 mph H 48%30.09 inHg

2:00 PM

Sunny

73° 💧 None 💨 12 mph H 48%30.09 inHg

3:00 PM

Sunny

74° 💧 None 💨 12 mph H 47%30.06 inHg

4:00 PM

Sunny

75° 💧 None 💨 12 mph H 45%30.06 inHg

5:00 PM

Sunny

74° 💧 None 💨 12 mph H 44%30.06 inHg

6:00 PM

Sunny

74° 💧 None 💨 11 mph H 44%30.03 inHg

7:00 PM

Sunny

72° 💧 None 💨 7 mph H 50%30.03 inHg

Thursday

4:00 AM

Clear night

61° 💧 None 💨 0 mph H 87%30.03 inHg

7:00 AM

Sunny

57° 💧 None 💨 5 mph H 87%30.03 inHg

10:00 AM

Sunny

71° 💧 None 💨 6 mph H 54%30.03 inHg

1:00 PM

Sunny

79° 💧 None 💨 11 mph H 34%29.97 inHg

4:00 PM

Sunny

82° 💧 None 💨 12 mph H 32%29.88 inHg

7:00 PM

Sunny

78° 💧 None 💨 11 mph H 37%29.85 inHg

10:00 PM

Clear night

71° 💧 None 💨 13 mph H 54%29.85 inHg

Friday

1:00 AM

Clear night

69° 💧 None 💨 14 mph H 64%29.83 inHg

4:00 AM

Clear night

67° 💧 None 💨 14 mph H 68%29.80 inHg

7:00 AM

Partly cloudy night

66° 💧 None 💨 16 mph H 68%29.74 inHg

10:00 AM

Partly cloudy

73° 💧 None 💨 19 mph H 62%29.65 inHg

1:00 PM

Mostly cloudy

84° 💧 None 💨 22 mph H 53%29.56 inHg

4:00 PM

Overcast

86° 💧 None 💨 24 mph H 50%29.53 inHg

7:00 PM

Mostly sunny

83° 💧 None 💨 16 mph H 56%29.56 inHg

10:00 PM

Clear night

67° 💧 None 💨 15 mph H 52%29.80 inHg

Saturday

1:00 AM

Clear night

61° 💧 None 💨 13 mph H 56%29.91 inHg

4:00 AM

Clear night

56° 💧 None 💨 5 mph H 71%29.97 inHg

7:00 AM

Clear night

56° 💧 None 💨 9 mph H 71%30.03 inHg

10:00 AM

Sunny

63° 💧 None 💨 12 mph H 47%30.06 inHg

1:00 PM

Sunny

70° 💧 None 💨 11 mph H 35%30.09 inHg

4:00 PM

Sunny

73° 💧 None 💨 10 mph H 30%30.06 inHg

7:00 PM

Mostly sunny

70° 💧 None 💨 5 mph H 34%30.03 inHg

10:00 PM

Partly cloudy night

63° 💧 None 💨 1 mph H 62%30.09 inHg

Sunday

1:00 AM

Mostly cloudy night

58° 💧 None 💨 5 mph H 57%30.09 inHg

7:00 AM

Mostly clear night

58° 💧 None 💨 5 mph H 65%30.09 inHg

1:00 PM

Overcast

56° 💧 None 💨 9 mph H 75%30.15 inHg

7:00 PM

Light rain

66° 💧 None 💨 14 mph H 53%30.12 inHg

Monday

1:00 AM

Overcast night

64° 💧 None 💨 12 mph H 63%30.03 inHg

7:00 AM

Overcast night

60° 💧 None 💨 14 mph H 78%29.94 inHg

1:00 PM

Light rain

58° 💧 None 💨 11 mph H 96%29.77 inHg

7:00 PM

Overcast

67° 💧 None 💨 14 mph H 81%29.74 inHg

Tuesday

1:00 AM

Clear night

66° 💧 None 💨 19 mph H 65%29.83 inHg

7:00 AM

Mostly clear night

56° 💧 None 💨 18 mph H 75%30.00 inHg

1:00 PM

Sunny

51° 💧 None 💨 10 mph H 91%30.18 inHg

7:00 PM

Sunny

65° 💧 None 💨 11 mph H 51%30.24 inHg

Wednesday

1:00 AM

Clear night

65° 💧 None 💨 3 mph H 57%30.21 inHg

7:00 AM

Clear night

55° 💧 None 💨 2 mph H 80%30.30 inHg

1:00 PM

Sunny

52° 💧 None 💨 5 mph H 85%30.39 inHg

7:00 PM

Sunny

67° 💧 None 💨 7 mph H 50%30.45 inHg

Thursday

1:00 AM

Mostly cloudy night

63° 💧 None 💨 8 mph H 59%30.42 inHg

7:00 AM

Overcast night

54° 💧 None 💨 6 mph H 79%30.50 inHg

1:00 PM

Overcast

53° 💧 None 💨 6 mph H 86%30.50 inHg

7:00 PM

Overcast

61° 💧 None 💨 4 mph H 57%30.47 inHg

Friday

1:00 AM

Mostly cloudy night

65° 💧 None 💨 3 mph H 58%30.36 inHg

7:00 AM

Mostly cloudy night

55° 💧 None 💨 5 mph H 90%30.36 inHg

1:00 PM

Mostly cloudy

54° 💧 None 💨 3 mph H 92%30.33 inHg

7:00 PM

Light rain

71° 💧 None 💨 7 mph H 50%30.30 inHg

Saturday

1:00 AM

Mostly clear night

69° 💧 None 💨 5 mph H 54%30.18 inHg

7:00 AM

Clear night

57° 💧 None 💨 1 mph H 83%30.21 inHg

1:00 PM

Sunny

53° 💧 None 💨 1 mph H 90%30.18 inHg

7:00 PM

Mostly sunny

74° 💧 None 💨 5 mph H 43%30.15 inHg

Sunday

1:00 AM

Clear night

72° 💧 None 💨 4 mph H 49%30.00 inHg

7:00 AM

Mostly clear night

62° 💧 None 💨 9 mph H 69%29.97 inHg

1:00 PM

Overcast

61° 💧 None 💨 9 mph H 80%29.91 inHg

7:00 PM

Mostly cloudy

75° 💧 None 💨 6 mph H 58%29.88 inHg

Monday

1:00 AM

Clear night

66° 💧 None 💨 7 mph H 88%29.88 inHg

7:00 AM

Clear night

59° 💧 None 💨 9 mph H 79%30.03 inHg

1:00 PM

Sunny

50° 💧 None 💨 6 mph H 85%30.12 inHg

7:00 PM

Sunny

66° 💧 None 💨 8 mph H 38%30.12 inHg

Tuesday

1:00 AM

Partly cloudy night

63° 💧 None 💨 7 mph H 46%30.03 inHg

In Sinai and, more broadly, across the state of South Dakota: The rest of the day will bring mostly cloudy skies with hot temperatures ranging from 71 to 87 degrees Fahrenheit. There is a high chance of rain, with some areas expecting around 0.04 inches of accumulation, and the probability of precipitation reaching up to 95%. Winds from the south will be noticeable, with sustained speeds up to 19 mph and gusts reaching 32 mph. Be prepared for brief, scattered showers and gusty winds as the day progresses. Conditions will gradually cool off toward evening, but humidity may remain elevated. Outdoor activities should account for the possibility of rain and gusty winds, especially during late afternoon hours.

15-Day Weather Outlook for Sinai

TomorrowTomorrow

Light thunderstorms 85°/73° 💧 None 💨 17 mph

Wednesday, Sep 9Wed Sep 9

Partly cloudy 78°/61° 💧 None 💨 14 mph

Thursday, Sep 10Thu Sep 10

Sunny 82°/57° 💧 0.062 in 💨 12 mph

Friday, Sep 11Fri Sep 11

Overcast 86°/66° 💧 None 💨 24 mph

Saturday, Sep 12Sat Sep 12

Mostly sunny 83°/56° 💧 0.008 in 💨 16 mph

Sunday, Sep 13Sun Sep 13

Overcast 70°/56° 💧 0.096 in 💨 9 mph

Monday, Sep 14Mon Sep 14

Light rain 66°/58° 💧 0.280 in 💨 14 mph

Tuesday, Sep 15Tue Sep 15

Overcast 67°/51° 💧 0.025 in 💨 19 mph

Wednesday, Sep 16Wed Sep 16

Sunny 65°/52° 💧 None 💨 11 mph

Thursday, Sep 17Thu Sep 17

Overcast 67°/53° 💧 0.034 in 💨 8 mph

Friday, Sep 18Fri Sep 18

Overcast 65°/54° 💧 None 💨 5 mph

Saturday, Sep 19Sat Sep 19

Mostly sunny 71°/53° 💧 0.002 in 💨 7 mph

Sunday, Sep 20Sun Sep 20

Mostly sunny 74°/61° 💧 None 💨 9 mph

Monday, Sep 21Mon Sep 21

Mostly cloudy 75°/50° 💧 0.077 in 💨 9 mph

Tuesday, Sep 22Tue Sep 22

Partly cloudy 66°/63° 💧 None 💨 8 mph

TEMPERATURE OUTLOOK

Temperature & Weather Trends in Sinai

Vertical axis: °F · Color based on temperature

AIR QUALITY FORECAST

Air Quality Forecast for Sinai

Hourly forecast · Updated every 2 hours

Fair

Nearest forecast value 12:00 PM

PM2.5 Fine particles Good 4,1µg/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 62,4µg/m³

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

NO₂ Nitrogen dioxide Good 0,9µg/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 Sinai

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 6,6High 🙂Fair

Tomorrow UV 6,0High 🙂Fair

Wednesday UV 6,1High 🙂Fair

Thursday UV 6,2High 🙂Fair

Friday UV 7,0High 🙂Fair

Saturday UV 6,0High —Unavailable

Sunday UV 7,0High —Unavailable

Hourly UV index today

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

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 Sinai

Vertical axis: mph · Horizontal axis: hours

Sustained wind Max gusts

NIGHT SKY · SINAI, SOUTH DAKOTA

Tonight's Stargazing & Shooting Stars

Fair observing conditions. Best local viewing window: 12:00 AM–1:00 AM.

50/100Best-hour score

BEST TIME TONIGHT 12:00 AM–1:00 AM Astronomical darkness: 9:35 PM–5:18 AM

☁ Cloud cover 65% 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 31° 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 min35%

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 Sinai were last refreshed today at 11:10 AM. The current forecast period extends through 09/09/2026 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.