The county is bracing itself for severe weather expected to sweep the country on Sunday night (October 27).
The fire service is advising people to spend time clearing away any loose items which could be blown about, causing damage or injury.
Northamptonshire Police will be monitoring the situation during the day and the Highways Agency has more staff on duty in the county in anticipation of disruption caused by the predicted storm.
Pitsford weather Centre forecasts the weather in Northamptonshire will get worse during the afternoon.
A spokesman said: “The main feature will be the strength of the wind which will tend to increase through the day becoming a fresh south-westerly through the afternoon.
“A scattering of mainly light showers will break out through the afternoon ahead of a more general band of heavy rain moving in from the west this evening.
“As the rain moves through wind speeds are likely to increase still further, although at the moment we are expecting the most damaging gusts to be confined to southern counties of England.
“Rain is likely to continue through the night, although the wind will tend to drop to a moderate to fresh north-westerly before dawn.”
People are advised to be aware of the dangers of falling or uprooted trees and not to make unnecessary journeys.
Loose objects such as ladders, garden furniture or anything else that could be blown into windows should be made secure.