Waterloo, SL Precipitation Forecast

Thunderstorms likely. Heavy downpours, frequent lightning with storms. High 86F. Winds SSE at 5 to 10 mph. Chance of rain 90%.

Tonight

Wed 10/21

Low 75°f

43% Precip. / 0.03 in

Considerable cloudiness with occasional rain showers. Low around 75F. Winds light and variable. Chance of rain 40%.

Tomorrow

Thu 10/22

High 89°f75°f

46% Precip. / 0.04 in

Cloudy skies during the morning hours followed by scattered showers and thunderstorms in the afternoon. Storms could contain frequent lightning. High 89F. Winds SSW at 5 to 10 mph. Chance of rain 50%.

Hourly Forecast

Now

77°

5AM

81%

77°

6AM

82%

76°

6:39AM

Sunrise

7AM

39%

76°

8AM

77°

9AM

79°

10AM

81°

11AM

51%

83°

12PM

43%

85°

1PM

64%

85°

2PM

76%

85°

3PM

48%

84°

4PM

42%

84°

5PM

62%

83°

6PM

41%

82°

6:33PM

Sunset

7PM

38%

80°

8PM

34%

79°

9PM

78°

10PM

78°

11PM

78°

12AM

77°

1AM

77°

2AM

44%

77°

3AM

34%

77°

4AM

24%

76°

Precipitation

82%

Storms continuing through 7 AM

Additional Conditions

Pressure 29.9 in
Visibility 5 miles
Clouds Cloudy
Dew Point76°F
Humidity 96%
Rainfall 0.27 in
Snow Depth 0 in

GFHA Station History

Almanac for October 21, 2026

Forecast Average Record
Temperature
High 86°F 86°F -°F
Low 75°F 74°F -°F
Rain/Snow Depth
Precipitation 0.29 in 0.3 in -
Snow 0 in - in -

Almanac for October 22, 2026

Forecast Average Record
Temperature
High 89°F 86°F -°F
Low 75°F 74°F -°F

Astronomy

Sun Rise Set
Actual Time 6:39 AM 6:33 PM
Civil Twilight 6:18 AM 6:55 PM
Nautical Twilight 5:54 AM 7:19PM
Astronomical Twilight 5:29 AM 7:44 PM

Length of Visible Light 12h 36m
Length of Day 11h 53m
Tomorrow will be 25 seconds shorter

Moon 3:12 PM 2:34 AM
Waxing Gibbous77% of the Moon is Illuminated

Oct 26

Full Moon

Nov 1

Waning Half Last Qtr

Nov 9

New Moon

Nov 17

Waxing Half First Qtr

Nearby Weather Stations

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