This report describes the typical weather at the Salinas Municipal Airport (Salinas, California, United States) weather station over the course of an average January. It is based on the historical records from 1974 to 2012. Earlier records are either unavailable or unreliable.
Salinas, California has a mediterranean climate with dry warm summers and mild winters. The area within 25 mi of this station is covered by grasslands (66%), oceans and seas (15%), forests (14%), and croplands (3%).
The month of January is characterized by essentially constant daily high temperatures, with daily highs around 61°F throughout the month, exceeding 70°F or dropping below 53°F only one day in ten.
Over the course of January, the length of the day is gradually increasing. The shortest day of the month is January 2 with 9:42 hours of daylight; the longest day is January 31 with 10:22 hours of daylight.
The earliest sunrise is at 7:09am on January 31; the latest sunset is at 5:31pm on January 31; the latest sunrise is at 7:20am on January 6; the earliest sunset is at 5:01pm on January 1.
Daylight saving time is observed in 2012 but it neither starts nor ends in January, so the entire month is in standard time.
The median cloud cover ranges from 42% (partly cloudy) to 59% (partly cloudy). The trend is for the sky to be becoming rapidly cloudier with the median cloud cover increasing by 18% from the start to the end of the month.
On January 1, the clearest day of the month, the sky is clear, mostly clear, or partly cloudy 58% of the time, and overcast or mostly cloudy 42% of the time.
On January 31, the cloudiest day of the month, the sky is overcast, mostly cloudy, or partly cloudy 60% of the time, and clear or mostly clear 40% of the time.
The probability that precipitation will be observed at this location varies throughout the month. Precipitation is most likely around January 31, occurring in 33% of days. Precipitation is least likely around January 1, occurring in 29% of days.
Throughout January, the most common forms of precipitation are light rain, moderate rain, and heavy rain.
Light rain is the most severe precipitation observed during 46% of those days with precipitation. It is most likely around January 31, when it is observed during 15% of all days.
Moderate rain is the most severe precipitation observed during 36% of those days with precipitation. It is most likely around January 31, when it is observed during 12% of all days.
Heavy rain is the most severe precipitation observed during 12% of those days with precipitation. It is most likely around January 28, when it is observed during 4% of all days.
Either snow is exceptionally unlikely to fall at this location in January or this station does not reliably report precipitation types.
The relative humidity typically ranges from 50% (comfortable) to 95% (very humid) over the course of a typical January, rarely dropping below 27% (dry) and reaching as high as 100% (very humid).
The air is driest around January 25, at which time the relative humidity drops below 63% (mildly humid) three days out of four; it is most humid around January 30, rising above 93% (very humid) three days out of four.
Dew point is often a better measure of how comfortable a person will find the weather than relative humidity because it more directly relates to whether perspiration will evaporate from the skin, thereby cooling the body. Lower dew points feel drier and higher dew points feel more humid.
Over the course of a typical January, the dew point typically varies from 35°F (dry) to 47°F (dry) and is rarely below 25°F (dry) or above 54°F (very comfortable).
Over the course of January typical wind speeds vary from 0 mph to 16 mph (calm to moderate breeze), rarely exceeding 23 mph (fresh breeze).
The highest average wind speed of 8 mph (gentle breeze) occurs around January 3, at which time the average daily maximum wind speed is 16 mph (moderate breeze).
The lowest average wind speed of 8 mph (light breeze) occurs around January 25, at which time the average daily maximum wind speed is 15 mph (moderate breeze).