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Welcome to the NWS Jackson Probabilistic Decision Support Services Page. Information contained here is intended to show a range of weather possibilities that the area could experience over the next 7 days for certain weather variables. Graphics shown on this page are the official forecast as well as graphics derived from the National Weather Service (NWS) National Blend of Models (NBM) version 4.1. Graphics on this page are generally updated twice per day at 4:00 AM and 4:00 PM.

For each weather variable, there is an "Expected", "Highest", and "Lowest" forecast. The "Highest" and "Lowest" graphics represent the range of possibilities for the specified time frame. The "Expected" forecast represents the forecast made by NWS Jackson meteorologists and represents the most likely outcome. For example, if the if the Highest High Temperature at a location is 49, the Lowest High Temperature is 44, and the Expected High Temperature is 47, that means the high temperature will almost certainly be between 44 and 49, and the most likely high temperature will be 47. When the range between "Highest" and "Lowest" is small, forecast confidence is relatively high, and when the range is large, forecast confidence is lower.

The "Lowest" forecast is derived from the NBM 10th percentile forecast, for which there is a 90% chance the actual value will end up being higher at that location. The "Highest" is derived from the NBM 90th percentile, for which there is a 90% chance the actual value will end up being lower at that location.
 
 
Temperature Probabilities
Expected High Temperature - Official NWS Forecast Highest High Temperature
Lowest High Temperature

 
Expected Low Temperature - Official NWS Forecast Highest Low Temperature
Lowest Low Temperature
 
Heat Probabilities
Probability Above 90 Degrees F
Probability Above 100 Degrees F

 
 
Freeze Probabilities
Probability Below 32 Degrees F
Probability Below 28 Degrees F

 
 
Wind Probabilities
Sustained Wind Above 20 mph
Sustained Wind Above 25 mph

 
Wind Gust Above 25 mph
Wind Gust Above 40 mph
Wind Gust Above 55 mph
 
Visibility Probabilities
Day 1 Probability for Dense Fog
Day 1 Visibility
Day 2 Probability for Dense Fog
Day 2 Visibility
 
For probabilistic snow and ice forecasts, check out our winter probabilities webpage.
Expected High Temperature Day1 Day2 Day3 Day4 Day5 Day6 Day7
Warmest Possible High Temperature Day1 Day2 Day3 Day4 Day5 Day6 Day7
Coldest Possible High Temperature Day1 Day2 Day3 Day4 Day5 Day6 Day7
Expected Low Temperature   Day2 Day3 Day4 Day5 Day6 Day7
Warmest Possible Low Temperature   Day2 Day3 Day4 Day5 Day6 Day7
Coldest Possible Low Temperature   Day2 Day3 Day4 Day5 Day6 Day7
Probability of High Temperature Above 90 Degrees Day1 Day2 Day3 Day4 Day5 Day6 Day7
Probability of High Temperature Above 100 Degrees Day1 Day2 Day3 Day4 Day5 Day6 Day7
Probability of Low Temperature Below 32 Degrees   Day2 Day3 Day4 Day5 Day6 Day7
Probability of Low Temperature Below 28 Degrees   Day2 Day3 Day4 Day5 Day6 Day7
Expected Amount of Snow Accumulation Day1 Day2 Day3 Day4 Day5 Day6 Day7
Highest Possible Amount of Snow Accumulation Day1 Day2 Day3 Day4 Day5 Day6 Day7
Lowest Possible Amount of Snow Accumulation Day1 Day2 Day3 Day4 Day5 Day6 Day7
Probability of at Least 1 inch of Snow Day1 Day2 Day3 Day4 Day5 Day6 Day7
Probability of at Least 2 inches of Snow Day1 Day2 Day3 Day4 Day5 Day6 Day7
Probability of at Least 4 inches of Snow Day1 Day2 Day3 Day4 Day5 Day6 Day7
Probability of at Least 6 inches of Snow Day1 Day2 Day3 Day4 Day5 Day6 Day7
Expected Amount of Ice Accumulation Day1 Day2 Day3 Day4      
Probability of Sustained Winds Above 20 mph Day1 Day2 Day3 Day4 Day5 Day6 Day7
Probability of Sustained Winds Above 25 mph Day1 Day2 Day3 Day4 Day5 Day6 Day7
Probability of Wind Gusts Above 25 mph Day1 Day2 Day3 Day4 Day5 Day6 Day7
Probability of Wind Gusts Above 40 mph Day1 Day2 Day3 Day4 Day5 Day6 Day7
Probability of Wind Gusts Above 55 mph Day1 Day2 Day3 Day4 Day5 Day6 Day7
Probability of Dense Fog Day1 Day2