The majority of the time this is due to the "Cold Cranking Amps" in your battery. Most batteries are only good until it gets down to a certain temperature. After the temperature reaches or goes below the minimum temperature, the car isn't going to start. Generally speaking, the battery will tell you on it's sticker or label how many "Cold Cranking Amps" your battery has (aka CCA Rating), and what temperature is the minimum temperature the car will be able to start at. Most of the time, it's limited to 0oF.
More information:
There may be water mixed with your fuel. water + cold = frozen fuel. get some HEET from a local gas station to remove water from your fuel during the cold months.
If your car is Diesel it maybe that the GlowPlugs are not working.
around 30 or 40
try checking your battery usually it is the lack of cold cranking amps
Saturns don't like the cold. Keep your battery in good condition and try to garage it.
You need to warm the car up with hot water.
It starts cold
check cold start sensor or cold start valve is the same dif. name, also check for the coil pack could be in short good luck
Does the engine turn over but not start or it does not turn over till cold? If the latter is the answer then your kick start is the problem. REPLY The car turns over but wont start.
How do you know that it is your car?
If the choke not work properly then your car wont start in cold weather or morning times. The other reason might be the fuel section is dirty and need some service.
It wont start
Your car wont start. lol
There could be many reasons why a car won't start in the morning. It might be a problem with a cold start, but it could be the battery isn't connected all the way, or the lack of gas.