This report describes the typical weather at the Gainesville Regional Airport (Gainesville, Florida, United States) weather station over the course of an average September 7. It is based on the historical records from 1974 to 2012. Earlier records are either unavailable or unreliable.
Gainesville, Florida has a warm humid temperate climate with hot summers and no dry season. The area within 25 mi of this station is covered by forests (55%), croplands (28%), grasslands (11%), and lakes and rivers (4%).
The temperature typically varies from 71°F to 87°F and is rarely below 68°F or above 92°F.
The coolest hours of the day are from 1am to 9am with the coldest at 7am, at which time the temperature is below 73°F three days out of four.
The warmest hours of the day are from noon to 6pm with the hottest at 3pm, at which time the temperature is above 84°F three days out of four.
The day has gained half its heat by 10am and lost it again by 8pm.
On September 7 the Sun rises at 7:10am and sets at 7:43pm.
Solar noon is at 1:26pm.
For reference, on the longest day of the year the Sun rises at 6:28am and sets at 8:32pm, while on the shortest day of the year it rises at 7:20am and sets at 5:34pm.
Astronomical twilight begins and ends 81 minutes before sunrise and after sunset at 5:48am and 9:04pm, respectively.
Nautical twilight begins and ends 52 minutes before sunrise and after sunset at 6:17am and 8:35pm, respectively.
Civil twilight begins and ends 24 minutes before sunrise and after sunset at 6:45am and 8:07pm, respectively.
Solar twilight begins and ends 31 minutes after sunrise and before sunset at 7:41am and 7:12pm, respectively.
The median cloud cover ranges from 16% (mostly clear) to 64% (partly cloudy).
At 3am, the clearest time of the day, the sky is clear, mostly clear, or partly cloudy 74% of the time, and overcast or mostly cloudy 24% of the time.
At 4pm, the cloudiest time of the day, the sky is overcast, mostly cloudy, or partly cloudy 62% of the time, and clear or mostly clear 37% of the time.
The sky is typically clearing in earnest by 10pm.
The clouds have typically started forming in earnest by 10am.
There is a 55% chance that precipitation will be observed at some point during the day.
The average measured liquid-equivalent quantity of precipitation is 0.044". Among only those days for which there is at least some measured precipitation, the average is 0.286" and the total rarely exceeds 0.636".
When precipitation does occur it is most often in the form of thunderstorms (65% of days with precipitation have at worst thunderstorms), slight rain (16%), and moderate rain (15%).
Precipitation is most likely around 6pm and least likely around 4am.
Either snow is exceptionally unlikely to fall at this location on September 7 or this station does not reliably report precipitation types.
The relative humidity typically ranges from 63% (mildly humid) to 95% (very humid), rarely dropping below 47% (comfortable), or exceeding 100% (very humid).
The air is driest at 3pm, at which time the relative humidity is less than 70% (humid) three days out of four; it is most humid at 6am, exceeding 93% (very humid) three days out of four.
The dew point ranges from 70°F to 73°F with an average of 71°F, which feels muggy no matter what the relative humidity is.
For reference, comfortable indoor conditions should have a relative humidity between 30% and 50% with a dew point of less than 65°F.
Sustained wind speeds typically vary from 3 mph to 9 mph (light air to gentle breeze) over the course of the day.
The peak sustained wind speed typically occurs around 5pm and is rarely outside the range 5 mph to 13 mph (light breeze to moderate breeze).
The wind is most calm around 6am, rarely exceeding 7 mph (light breeze).
The wind is most often out of the east (18% of the time) and north east (13% of the time). The wind is least often out of the south west (5% of the time).