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Current weather in Fort Thompson is overcast clouds.

Where can I find the hourly weather forecast for Fort Thompson?

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

Is the weather forecast for Fort Thompson updated regularly?

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

Now · 8:55 AM

Fort Thompson Weather & Hourly Forecast

United States · South Dakota · 57339

54°F

Overcast

Feels like: 51°F

💧 Humidity 91% 🌡 Pressure 30.27 inHg 💨 Wind 6 mph 👁 Visibility 19.9 mi ☁ Clouds 96% ☀️ UV index 0.0 · Low 🌅 Sunrise 7:23 AM 🌇 Sunset 7:36 PM

Hourly Forecast for Fort Thompson

Today

9:00 AM

Overcast

54° 💧 None 💨 6 mph H 91%30.27 inHg

12:00 PM

Overcast

62° 💧 0.000 in 💨 12 mph H 62%30.24 inHg

3:00 PM

Overcast

66° 💧 0.000 in 💨 14 mph H 57%30.18 inHg

6:00 PM

Mostly cloudy

66° 💧 None 💨 14 mph H 59%30.15 inHg

9:00 PM

Mostly cloudy night

60° 💧 0.000 in 💨 15 mph H 79%30.18 inHg

Tomorrow

12:00 AM

Overcast night

59° 💧 0.009 in 💨 15 mph H 83%30.18 inHg

3:00 AM

Overcast night

57° 💧 0.003 in 💨 14 mph H 89%30.18 inHg

6:00 AM

Overcast night

58° 💧 0.002 in 💨 14 mph H 90%30.18 inHg

9:00 AM

Overcast

59° 💧 None 💨 14 mph H 90%30.18 inHg

12:00 PM

Overcast

64° 💧 0.001 in 💨 21 mph H 77%30.15 inHg

3:00 PM

Overcast

67° 💧 0.002 in 💨 20 mph H 74%30.09 inHg

6:00 PM

Overcast

67° 💧 None 💨 17 mph H 74%30.06 inHg

9:00 PM

Overcast night

66° 💧 0.003 in 💨 17 mph H 77%30.06 inHg

Thursday

12:00 AM

Overcast night

65° 💧 0.073 in 💨 15 mph H 79%30.09 inHg

3:00 AM

Mostly clear night

63° 💧 0.004 in 💨 14 mph H 90%30.06 inHg

6:00 AM

Clear night

61° 💧 None 💨 4 mph H 94%30.06 inHg

Today

9:00 AM

Overcast

54° 💧 None 💨 6 mph H 91%30.27 inHg

10:00 AM

Mostly cloudy

57° 💧 None 💨 9 mph H 76%30.27 inHg

11:00 AM

Mostly cloudy

59° 💧 None 💨 10 mph H 68%30.24 inHg

12:00 PM

Overcast

62° 💧 0.000 in 💨 12 mph H 62%30.24 inHg

1:00 PM

Overcast

63° 💧 None 💨 13 mph H 61%30.24 inHg

2:00 PM

Mostly cloudy

65° 💧 None 💨 13 mph H 57%30.21 inHg

3:00 PM

Overcast

66° 💧 None 💨 14 mph H 57%30.18 inHg

4:00 PM

Mostly cloudy

66° 💧 0.000 in 💨 14 mph H 57%30.15 inHg

5:00 PM

Overcast

66° 💧 None 💨 14 mph H 56%30.15 inHg

6:00 PM

Mostly cloudy

66° 💧 None 💨 14 mph H 59%30.15 inHg

7:00 PM

Overcast

64° 💧 None 💨 13 mph H 66%30.15 inHg

8:00 PM

Overcast night

62° 💧 None 💨 14 mph H 74%30.15 inHg

9:00 PM

Mostly cloudy night

60° 💧 None 💨 15 mph H 79%30.18 inHg

10:00 PM

Mostly cloudy night

59° 💧 0.000 in 💨 15 mph H 81%30.18 inHg

11:00 PM

Overcast night

59° 💧 0.000 in 💨 16 mph H 82%30.18 inHg

Tomorrow

12:00 AM

Overcast night

59° 💧 0.002 in 💨 15 mph H 83%30.18 inHg

1:00 AM

Partly cloudy night

58° 💧 0.002 in 💨 15 mph H 85%30.18 inHg

2:00 AM

Light rain

58° 💧 0.005 in 💨 14 mph H 87%30.18 inHg

3:00 AM

Overcast night

57° 💧 0.002 in 💨 14 mph H 89%30.18 inHg

4:00 AM

Overcast night

58° 💧 None 💨 14 mph H 89%30.18 inHg

5:00 AM

Overcast night

58° 💧 0.001 in 💨 14 mph H 88%30.18 inHg

6:00 AM

Overcast night

58° 💧 0.001 in 💨 14 mph H 90%30.18 inHg

7:00 AM

Overcast night

58° 💧 0.001 in 💨 14 mph H 91%30.18 inHg

8:00 AM

Overcast

58° 💧 0.001 in 💨 15 mph H 91%30.18 inHg

9:00 AM

Overcast

59° 💧 None 💨 14 mph H 90%30.18 inHg

10:00 AM

Overcast

60° 💧 None 💨 16 mph H 87%30.18 inHg

11:00 AM

Overcast

62° 💧 None 💨 20 mph H 83%30.18 inHg

12:00 PM

Overcast

64° 💧 None 💨 21 mph H 77%30.15 inHg

1:00 PM

Overcast

65° 💧 0.001 in 💨 21 mph H 75%30.15 inHg

2:00 PM

Overcast

66° 💧 0.001 in 💨 20 mph H 75%30.12 inHg

3:00 PM

Overcast

67° 💧 0.001 in 💨 20 mph H 74%30.09 inHg

4:00 PM

Overcast

68° 💧 0.001 in 💨 19 mph H 72%30.09 inHg

5:00 PM

Overcast

68° 💧 None 💨 19 mph H 72%30.06 inHg

6:00 PM

Overcast

67° 💧 None 💨 17 mph H 74%30.06 inHg

7:00 PM

Overcast

66° 💧 None 💨 17 mph H 77%30.06 inHg

8:00 PM

Overcast night

66° 💧 None 💨 18 mph H 76%30.06 inHg

9:00 PM

Overcast night

66° 💧 0.001 in 💨 17 mph H 77%30.06 inHg

10:00 PM

Overcast night

65° 💧 0.001 in 💨 16 mph H 78%30.09 inHg

11:00 PM

Overcast night

65° 💧 0.001 in 💨 16 mph H 78%30.09 inHg

Thursday

12:00 AM

Overcast night

65° 💧 None 💨 15 mph H 79%30.09 inHg

1:00 AM

Light thunderstorms

63° 💧 0.036 in 💨 9 mph H 90%30.12 inHg

2:00 AM

Light rain

63° 💧 0.037 in 💨 16 mph H 90%30.06 inHg

3:00 AM

Mostly clear night

63° 💧 0.004 in 💨 14 mph H 90%30.06 inHg

4:00 AM

Clear night

62° 💧 None 💨 9 mph H 91%30.06 inHg

5:00 AM

Clear night

62° 💧 None 💨 5 mph H 93%30.06 inHg

6:00 AM

Clear night

61° 💧 None 💨 4 mph H 94%30.06 inHg

7:00 AM

Clear night

60° 💧 None 💨 3 mph H 96%30.09 inHg

8:00 AM

Mostly sunny

59° 💧 None 💨 4 mph H 98%30.09 inHg

9:00 AM

Mostly cloudy

62° 💧 None 💨 4 mph H 96%30.09 inHg

10:00 AM

Overcast

65° 💧 None 💨 4 mph H 91%30.12 inHg

11:00 AM

Overcast

68° 💧 None 💨 6 mph H 81%30.12 inHg

12:00 PM

Mostly cloudy

70° 💧 None 💨 5 mph H 75%30.12 inHg

1:00 PM

Mostly sunny

72° 💧 None 💨 4 mph H 72%30.12 inHg

2:00 PM

Mostly sunny

74° 💧 None 💨 4 mph H 68%30.09 inHg

3:00 PM

Mostly cloudy

75° 💧 None 💨 4 mph H 64%30.09 inHg

4:00 PM

Overcast

75° 💧 None 💨 4 mph H 61%30.09 inHg

5:00 PM

Overcast

75° 💧 None 💨 6 mph H 62%30.09 inHg

6:00 PM

Overcast

73° 💧 None 💨 7 mph H 65%30.09 inHg

7:00 PM

Overcast

70° 💧 None 💨 7 mph H 72%30.09 inHg

Friday

4:00 AM

Overcast night

62° 💧 None 💨 9 mph H 96%30.09 inHg

7:00 AM

Overcast night

62° 💧 None 💨 10 mph H 94%30.09 inHg

10:00 AM

Overcast

61° 💧 None 💨 11 mph H 96%30.06 inHg

1:00 PM

Light rain

63° 💧 None 💨 16 mph H 87%30.03 inHg

4:00 PM

Light rain

63° 💧 None 💨 15 mph H 93%29.94 inHg

7:00 PM

Overcast

63° 💧 None 💨 14 mph H 92%29.88 inHg

10:00 PM

Overcast night

63° 💧 None 💨 15 mph H 95%29.88 inHg

Saturday

1:00 AM

Partly cloudy night

64° 💧 None 💨 11 mph H 97%29.83 inHg

4:00 AM

Mostly clear night

64° 💧 None 💨 8 mph H 99%29.80 inHg

7:00 AM

Clear night

63° 💧 None 💨 10 mph H 97%29.80 inHg

10:00 AM

Mostly sunny

68° 💧 None 💨 13 mph H 86%29.80 inHg

1:00 PM

Sunny

77° 💧 None 💨 9 mph H 68%29.77 inHg

4:00 PM

Sunny

81° 💧 None 💨 7 mph H 57%29.74 inHg

7:00 PM

Sunny

75° 💧 None 💨 4 mph H 75%29.77 inHg

10:00 PM

Clear night

67° 💧 None 💨 3 mph H 91%29.83 inHg

Sunday

1:00 AM

Partly cloudy night

64° 💧 None 💨 3 mph H 99%29.85 inHg

4:00 AM

Overcast night

62° 💧 None 💨 4 mph H 100%29.85 inHg

7:00 AM

Overcast night

63° 💧 None 💨 6 mph H 99%29.91 inHg

10:00 AM

Overcast

65° 💧 None 💨 8 mph H 99%29.91 inHg

1:00 PM

Overcast

70° 💧 None 💨 7 mph H 87%29.91 inHg

4:00 PM

Sunny

77° 💧 None 💨 6 mph H 68%29.85 inHg

7:00 PM

Mostly sunny

74° 💧 None 💨 1 mph H 78%29.83 inHg

10:00 PM

Clear night

67° 💧 None 💨 2 mph H 92%29.83 inHg

Monday

1:00 AM

Partly cloudy night

63° 💧 None 💨 2 mph H 98%29.80 inHg

7:00 AM

Mostly cloudy night

64° 💧 None 💨 3 mph H 96%29.85 inHg

1:00 PM

Overcast

65° 💧 None 💨 7 mph H 98%29.83 inHg

7:00 PM

Overcast

74° 💧 None 💨 3 mph H 72%29.85 inHg

Tuesday

1:00 AM

Overcast night

73° 💧 None 💨 4 mph H 71%29.80 inHg

7:00 AM

Overcast night

64° 💧 None 💨 8 mph H 97%29.83 inHg

1:00 PM

Light rain

63° 💧 None 💨 9 mph H 97%29.83 inHg

7:00 PM

Light rain

68° 💧 None 💨 9 mph H 85%29.83 inHg

Wednesday

1:00 AM

Mostly cloudy night

66° 💧 None 💨 10 mph H 88%29.83 inHg

7:00 AM

Overcast night

62° 💧 None 💨 6 mph H 95%29.88 inHg

1:00 PM

Overcast

61° 💧 None 💨 9 mph H 95%29.91 inHg

7:00 PM

Overcast

65° 💧 None 💨 7 mph H 82%29.91 inHg

Thursday

1:00 AM

Overcast night

65° 💧 None 💨 7 mph H 82%29.88 inHg

7:00 AM

Mostly cloudy night

61° 💧 None 💨 4 mph H 94%29.91 inHg

1:00 PM

Overcast

61° 💧 None 💨 4 mph H 97%29.91 inHg

7:00 PM

Overcast

69° 💧 None 💨 6 mph H 77%29.91 inHg

Friday

1:00 AM

Overcast night

68° 💧 None 💨 5 mph H 79%29.85 inHg

7:00 AM

Clear night

63° 💧 None 💨 7 mph H 95%29.88 inHg

1:00 PM

Sunny

61° 💧 None 💨 9 mph H 96%29.88 inHg

7:00 PM

Sunny

76° 💧 None 💨 14 mph H 70%29.85 inHg

Saturday

1:00 AM

Clear night

73° 💧 None 💨 11 mph H 69%29.77 inHg

7:00 AM

Clear night

67° 💧 None 💨 12 mph H 91%29.80 inHg

1:00 PM

Mostly sunny

65° 💧 None 💨 13 mph H 93%29.74 inHg

7:00 PM

Partly cloudy

78° 💧 None 💨 13 mph H 59%29.74 inHg

Sunday

1:00 AM

Partly cloudy night

71° 💧 None 💨 18 mph H 63%29.85 inHg

7:00 AM

Clear night

62° 💧 None 💨 17 mph H 53%30.09 inHg

1:00 PM

Mostly sunny

49° 💧 None 💨 13 mph H 65%30.30 inHg

7:00 PM

Sunny

58° 💧 None 💨 13 mph H 53%30.33 inHg

Monday

1:00 AM

Clear night

56° 💧 None 💨 2 mph H 60%30.27 inHg

7:00 AM

Clear night

49° 💧 None 💨 4 mph H 83%30.30 inHg

1:00 PM

Sunny

46° 💧 None 💨 7 mph H 89%30.27 inHg

7:00 PM

Mostly sunny

61° 💧 None 💨 14 mph H 52%30.18 inHg

Tuesday

1:00 AM

Clear night

59° 💧 None 💨 8 mph H 59%30.06 inHg

7:00 AM

Clear night

52° 💧 None 💨 6 mph H 80%30.06 inHg

1:00 PM

Mostly sunny

48° 💧 None 💨 3 mph H 93%30.09 inHg

7:00 PM

Sunny

66° 💧 None 💨 9 mph H 61%30.15 inHg

Wednesday

1:00 AM

Clear night

63° 💧 None 💨 4 mph H 68%30.12 inHg

In Fort Thompson and, more broadly, across the state of South Dakota: This morning will start with mostly cloudy skies and cool temperatures around 52 to 56 degrees Fahrenheit. Winds will be coming from the east at about 10 mph, with gusts reaching up to 17 mph. There is a possibility of light rain throughout the day, with total accumulation around 0.16 inches. As the afternoon progresses, the cloudy conditions are expected to persist, and the chance of rain remains high. Temperatures are likely to stay in the same cool range, and breezes from the east will continue at similar speeds. Overall, it will be a damp, breezy day with limited sunshine. Be prepared for possible showers if you're heading outdoors.

15-Day Weather Outlook for Fort Thompson

TomorrowTomorrow

Overcast 68°/57° 💧 None 💨 21 mph

Thursday, Sep 24Thu Sep 24

Light thunderstorms 75°/59° 💧 None 💨 16 mph

Friday, Sep 25Fri Sep 25

Light rain 63°/61° 💧 0.183 in 💨 16 mph

Saturday, Sep 26Sat Sep 26

Partly cloudy 81°/63° 💧 None 💨 13 mph

Sunday, Sep 27Sun Sep 27

Overcast 77°/62° 💧 0.013 in 💨 8 mph

Monday, Sep 28Mon Sep 28

Overcast 74°/63° 💧 0.717 in 💨 7 mph

Tuesday, Sep 29Tue Sep 29

Light rain 73°/63° 💧 0.560 in 💨 9 mph

Wednesday, Sep 30Wed Sep 30

Overcast 66°/61° 💧 0.108 in 💨 10 mph

Thursday, Oct 1Thu Oct 1

Overcast 69°/61° 💧 0.013 in 💨 7 mph

Friday, Oct 2Fri Oct 2

Overcast 76°/61° 💧 0.002 in 💨 14 mph

Saturday, Oct 3Sat Oct 3

Mostly sunny 78°/65° 💧 None 💨 13 mph

Sunday, Oct 4Sun Oct 4

Partly cloudy 71°/49° 💧 0.005 in 💨 18 mph

Monday, Oct 5Mon Oct 5

Mostly sunny 61°/46° 💧 None 💨 14 mph

Tuesday, Oct 6Tue Oct 6

Mostly sunny 66°/48° 💧 None 💨 9 mph

Wednesday, Oct 7Wed Oct 7

Sunny 63°/63° 💧 None 💨 4 mph

TEMPERATURE OUTLOOK

Temperature & Weather Trends in Fort Thompson

Vertical axis: °F · Color based on temperature

AIR QUALITY FORECAST

Air Quality Forecast for Fort Thompson

Hourly forecast · Updated every 2 hours

Good

Nearest forecast value 9:00 AM

PM2.5 Fine particles Good 0,6µg/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 0,6µg/m³

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

O₃ Ozone Good 39,8µg/m³

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

NO₂ Nitrogen dioxide Good 1,5µg/m³

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

Air quality is favorable for outdoor activities.

UV & HEALTH

UV, Sun & Health Outlook in Fort Thompson

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 4,2Moderate 😊Good

Tomorrow UV 3,7Moderate 🙂Fair

Thursday UV 2,9Low 🙂Fair

Friday UV 2,7Low 🙂Fair

Saturday UV 7,0High 🙂Fair

Sunday UV 6,0High —Unavailable

Monday UV 7,0High —Unavailable

Hourly UV index today

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

Good air quality

Air quality is good and outdoor activities can be enjoyed normally.

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 Fort Thompson

Vertical axis: mph · Horizontal axis: hours

Sustained wind Max gusts

NIGHT SKY · FORT THOMPSON, SOUTH DAKOTA

Tonight's Stargazing & Shooting Stars

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

61/100Best-hour score

BEST TIME TONIGHT 1:00 AM–2:00 AM Astronomical darkness: 9:12 PM–5:49 AM

☁ Cloud cover 44% Real hourly forecast for the best viewing hour.

☾ Moonlight 88% Waxing Gibbous · Moon about 23° above the horizon at the best viewing hour.

☄ Meteor activity Southern Taurids Reference ZHR 7 · Radiant 32° high at the best hour.

✦ Estimated visible meteors 0–1/hour Local estimate after weather, moonlight and radiant-height adjustments.

Chance ≥1 meteor in 30 min22%

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

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

NOV 6–NOV 30

LeonidsStart NOV 6 · Peak NOV 17 · End NOV 30 · ZHR 15 · 52% 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 Fort Thompson were last refreshed today at 8:55 AM. The current forecast period extends through 24/09/2026 at 6:00 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.