This report describes the typical weather at the Hector International Airport (Fargo, North Dakota, United States) weather station over the course of an average year. It is based on the historical records from 1974 to 2012. Earlier records are either unavailable or unreliable.
Fargo, North Dakota has a humid continental climate with warm summers and no dry season. The area within 25 mi of this station is covered by croplands (50%) and grasslands (49%).
Over the course of a year, the temperature typically varies from -1°F to 83°F and is rarely below -20°F or above 91°F.
The warm season lasts from May 17 to September 17 with an average daily high temperature above 69°F. The hottest day of the year is July 23, with an average high of 83°F and low of 61°F.
The cold season lasts from November 26 to March 6 with an average daily high temperature below 29°F. The coldest day of the year is January 10, with an average low of -1°F and high of 16°F.
The length of the day varies significantly over the course of the year. The shortest day is December 21 with 8:32 hours of daylight; the longest day is June 20 with 15:54 hours of daylight.
The earliest sunrise is at 5:31am on June 17 and the latest sunset is at 9:27pm on June 24. The latest sunrise is at 8:14am on November 3 and the earliest sunset is at 4:38pm on December 10.
Daylight savings time (DST) is observed in this location during 2012, starting in the spring on March 11 and ending in the fall on November 4.
The median cloud cover ranges from 29% (mostly clear) to 80% (partly cloudy). The sky is cloudiest on December 8 and clearest on August 11. The clearer part of the year begins around May 31. The cloudier part of the year begins around October 16.
On August 11, the clearest day of the year, the sky is clear, mostly clear, or partly cloudy 71% of the time, and overcast or mostly cloudy 28% of the time.
On December 8, the cloudiest day of the year, the sky is overcast, mostly cloudy, or partly cloudy 62% of the time, and clear or mostly clear 38% of the time.
The probability that precipitation will be observed at this location varies throughout the year. Precipitation is most likely around January 14, occurring in 63% of days. Precipitation is least likely around October 8, occurring in 37% of days.
Over the entire year, the most common forms of precipitation are light snow, light rain, thunderstorms, and moderate rain.
Light snow is the most severe precipitation observed during 36% of those days with precipitation. It is most likely around January 14, when it is observed during 45% of all days.
Light rain is the most severe precipitation observed during 24% of those days with precipitation. It is most likely around May 18, when it is observed during 22% of all days.
Thunderstorms are the most severe precipitation observed during 13% of those days with precipitation. They are most likely around July 21, when it is observed during 18% of all days.
Moderate rain is the most severe precipitation observed during 11% of those days with precipitation. It is most likely around May 28, when it is observed during 11% of all days.
During the warm season, which lasts from May 17 to September 17, there is a 43% average chance that precipitation will be observed at some point during a given day. When precipitation does occur it is most often in the form of light rain (40% of days with precipitation have at worst light rain), thunderstorms (34%), and moderate rain (18%).
During the cold season, which lasts from November 26 to March 6, there is a 58% average chance that precipitation will be observed at some point during a given day. When precipitation does occur it is most often in the form of light snow (70% of days with precipitation have at worst light snow) and moderate snow (20%).
The likelihood of snow falling is highest around January 14, occurring in 60% of days. The season in which it is relatively likely for snow to fall spans from October 30 to April 10.
Either snow rarely accumulates at this location or snow depth measurements are unavailable or unreliable.
The relative humidity typically ranges from 37% (comfortable) to 90% (very humid) over the course of the year, rarely dropping below 19% (dry) and reaching as high as 99% (very humid).
The air is driest around April 26, at which time the relative humidity drops below 47% (comfortable) three days out of four; it is most humid around August 23, exceeding 86% (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 year, the dew point typically varies from -7°F (dry) to 64°F (mildy humid) and is rarely below -28°F (dry) or above 72°F (very muggy).
The time of the year between May 23 and September 21 is the most comfortable, with dew points that are neither too dry nor too muggy.
Over the course of the year typical wind speeds vary from 1 mph to 20 mph (light air to fresh breeze), rarely exceeding 29 mph (strong breeze).
The highest average wind speed of 13 mph (moderate breeze) occurs around April 6, at which time the average daily maximum wind speed is 20 mph (fresh breeze).
The lowest average wind speed of 9 mph (gentle breeze) occurs around July 27, at which time the average daily maximum wind speed is 16 mph (moderate breeze).