Johnston, MS Weather Forecast and Current Conditions

WEATHER ALERTS - Cold Weather Advisory

Current Conditions From Nearby Station

Clear 24°F
Feels Like 18°F  
Humidity 68% Dew Point 15°F Wind N 5 MPH Gusts 9 Barometer N/A
Report from a MADIS/MESONET weather station 6.9 mi. NE of central Johnston
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Point Forecast at a Glance

SunDec 14
Sun Dec 14: Mostly Clear, Low 21F
 
21
MonDec 15
Mon Dec 15: Sunny, High 40F, Low 28F
40
28
TueDec 16
Tue Dec 16: Widespread , Mainly Before 8am, High 52F, Low 40F
52
40
WedDec 17
Wed Dec 17: Showers, High 60F, Low 53F
30%
60
53
ThuDec 18
Thu Dec 18: Thunderstorms, High 68F, Low 36F
60%
68
36
FriDec 19
Fri Dec 19: Sunny, High 53F, Low 41F
53
41
SatDec 20
Sat Dec 20: Partly Sunny, High 67F, Low 56F
67
56

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7-Day Temperature Trend

Week Ahead Summary

High temperatures climb from 40°F to a high of 68°F by week's end. Unsettled weather expected with rain likely on at least 4 days.

Climate Context

This week's forecast shows temperatures running 2°F above the historical average for December. Normal highs for this period are around 56°F with lows around 37°F.

This Date in Weather History

1924 - The temperature at Helena, MT, plunged 79 degrees in 24 hours, and 88 degrees in 34 hours. The mercury plummeted from 63 above to 25 below zero. At Fairfield MT the temperature plunged 84 degrees in just 12 hours, from 63 at Noon to 21 below zero at midnight.

More on this and other weather history

Johnston, MS 7 Day Weather Forecast Details

Sunday Dec 14

Mostly Clear

Night: Mostly clear, with a low around 21. North northeast wind 5 to 10 mph.

Monday Dec 15

Sunny

Day: Sunny, with a high near 40. North northeast wind around 5 mph becoming calm in the morning.

Widespread After 11pm

Night: Widespread frost after 11pm. Otherwise, mostly clear, with a low around 28. Calm wind.

Tuesday Dec 16

Widespread , Mainly Before 8am

Day: Widespread frost, mainly before 8am. Otherwise, mostly sunny, with a high near 52. Light south wind increasing to 5 to 10 mph in the morning.

Showers

Night: A 20 percent chance of showers after midnight. Mostly cloudy, with a low around 40. South wind around 5 mph.

Wednesday Dec 17

Showers

Day: A 30 percent chance of showers. Mostly cloudy, with a high near 60. South wind around 5 mph.

Thunderstorms

Night: A slight chance of showers, then a chance of showers and thunderstorms after midnight. Mostly cloudy, with a low around 53. South wind 5 to 10 mph, with gusts as high as 20 mph. Chance of precipitation is 30%.

Thursday Dec 18

Thunderstorms

Day: A chance of showers and thunderstorms, then showers likely and possibly a thunderstorm after noon. Partly sunny, with a high near 68. South wind 10 to 15 mph becoming northwest in the afternoon. Winds could gust as high as 25 mph. Chance of precipitation is 60%.

Showers

Night: A 20 percent chance of showers before midnight. Mostly clear, with a low around 36. North wind 5 to 10 mph.

Friday Dec 19

Sunny

Day: Sunny, with a high near 53.

Partly Cloudy

Night: Partly cloudy, with a low around 41.

Saturday Dec 20

Partly Sunny

Day: Partly sunny, with a high near 67.

Thunderstorms

Night: A 20 percent chance of showers and thunderstorms. Mostly cloudy, with a low around 56.

Sunday Dec 21

Showers

Day: A 20 percent chance of showers. Partly sunny, with a high near 69.

How We Provide Better Local Weather

Current conditions: We use the nearest available station to your location - including professional MESONET/MADIS and local weather stations - often miles closer than regional airports.

Forecasts: National Weather Service point forecasts predict for your specific area, not broad regional zones, making them far more relevant to your location.