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Olive Branch, IL Weather Forecast

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Clear

81°F

Updated	10:25 am
Feels Like	86°F
Humidity	74%
Wind	ENE 5 mph
Barometer	30.03 in
Dew Point	72°F

Clear

27°C

Updated	10:25 am
Feels Like	30°C
Humidity	74%
Wind	ENE 8 km/h
Barometer	101.6 kPa
Dew Point	22°C

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Cloud Cover	87%
uv UV Index	8
Sunrise	6:37 AM
Sunset	7:07 PM
Moonrise	9:17 AM
Moonset	8:12 PM

Civil Twilight
6:09 AM to 6:35 AM
7:08 PM to 7:34 PM
Olive Branch IL Weather - Waxing Crescent Moon

Waxing Crescent Moon

Olive Branch Weather Forecast

TODAY	TONIGHT	MONDAY	MONDAY NIGHT	TUESDAY	TUESDAY NIGHT	WEDNESDAY	THURSDAY	FRIDAY	FRIDAY NIGHT	SATURDAY

Patchy Fog	Partly Cloudy	Mostly Sunny	Mostly Clear	Sunny	Mostly Clear	Mostly Clear	Mostly Clear	Mostly Clear	Partly Cloudy	Partly Cloudy
Hi: 91°FHi: 33°C	Lo: 69°FLo: 21°C	Hi: 90°FHi: 32°C	Lo: 71°FLo: 22°C	Hi: 95°FHi: 35°C	Hi: 91°FHi: 33°C Lo: 71°FLo: 22°C	Hi: 91°FHi: 33°C Lo: 71°FLo: 22°C	Hi: 91°FHi: 33°C Lo: 71°FLo: 22°C	Hi: 91°FHi: 33°C Lo: 71°FLo: 22°C	Hi: 89°FHi: 32°C Lo: 69°FLo: 21°C	Hi: 89°FHi: 32°C Lo: 69°FLo: 21°C

POP = Probability of Precipitation.

Weather Outlook Updated: 912 AM CDT Sun Sep 13 2026 Olive Branch, IL Weather - WeatherWorld.com

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Issued: 600 AM CDT Sun Sep 13 2026

Key Messages

Very warm conditions with small rain chances in parts of southeast Missouri and north of Interstate 64 are forecast today and Monday.
A major late season heat wave is forecast Tuesday through Thursday. High temperatures will reach the middle to upper 90s with daily peak heat index values around 105 degrees or higher. A Heat Advisory will very likely be needed.
Slightly cooler and less humid conditions arrive by the end of the week, along with low-end 15 to 25% chances of thunderstorm...

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Weather 101: Term of the Day

Tides

The periodic (occurring at regular intervals) variations in the surface water level of the oceans, bays, gulfs, and inlets. Tides are the result of the gravitiational attraction of the sun and the moon on the earth. The attraction of the moon is far greater than the attraction of the sun due to the close proximity of the earth and the moon. The sun is 360 times further from the earth than the moon. Therefore, the moon plays a larger role than the sun in producing tides. Every 27.3 days, the earth and the moon revolve around a common point. This means that the oceans and other water bodies which are affected by the earth-moon system experience a new tidal cycle every 27.3 days. Because of the physical processes which occur to produce the tidal system, there are two high tides and two low tides each day. Because of the angle of the moon with respect to the earth, the two high tides each day do not have to be of equal height. The same holds true for the two low tides each day. Tides also differ in height on a daily basis. The daily differences between tidal heights is due to the changing distance between the earth and the moon. Scientists use measurements of the height of the water level to examine tides and the various phenomena which influence tides, such as hurricanes and winter storms.