Climate and monthly weather forecastKeystone, FL
Climate and monthly weather forecast
Weather in January
January, the same as December, is another refreshing winter month in Keystone, Florida, with an average temperature ranging between min 54.5°F (12.5°C) and max 66°F (18.9°C). January, with its average high-temperature of 66°F (18.9°C) and an average low-temperature of 54.5°F (12.5°C), holds the record as the coldest month. Weather in January »Weather in February
February, the last month of the winter in Keystone, is an agreeable month, with an average temperature ranging between min 57.7°F (14.3°C) and max 68.9°F (20.5°C). The average high-temperature is an agreeable 68.9°F (20.5°C) in February, hardly different from the 66°F (18.9°C) recorded in January. Weather in February »Weather in March
March, the first month of the spring in Keystone, is still a pleasant month, with an average temperature varying between 60.6°F (15.9°C) and 72.1°F (22.3°C). Keystone marks the onset of March with an average high-temperature of a still agreeable 72.1°F (22.3°C), subtly divergent from February's 68.9°F (20.5°C). Weather in March »Weather in April
April in Keystone, Florida, is a warm spring month, with temperature in the range of an average high of 78.4°F (25.8°C) and an average low of 67.3°F (19.6°C). The coming of April brings a minor shift in Keystone's weather, with average high-temperatures adjusting from March's pleasant 72.1°F (22.3°C) to a warm 78.4°F (25.8°C). Weather in April »Weather in May
The last month of the spring, May, is another warm month in Keystone, Florida, with an average temperature varying between 72.9°F (22.7°C) and 82.9°F (28.3°C). Keystone observes an average high-temperature of a still moderately hot 82.9°F (28.3°C) in May, barely different from 78.4°F (25.8°C) in April. Weather in May »Weather in June
The first month of the summer, June, is a hot month in Keystone, Florida, with an average temperature varying between 86.5°F (30.3°C) and 78.3°F (25.7°C). Stepping into June, Keystone records an average high-temperature of a tropical 86.5°F (30.3°C), almost consistent with May. Weather in June »Weather in July
July, like June, is another hot summer month in Keystone, Florida, with an average temperature varying between 79.5°F (26.4°C) and 87.4°F (30.8°C). Upon the onset of July, Keystone witnesses an average high-temperature of a still hot 87.4°F (30.8°C), showing a close resemblance to the prior month. Weather in July »Weather in August
August, the last month of the summer in Keystone, is also a hot month, with an average temperature varying between 88.3°F (31.3°C) and 80.2°F (26.8°C). August, marked by an average high-temperature of 88.3°F (31.3°C) and a low-temperature of 80.2°F (26.8°C), is the warmest month. The heat index in August is appraised at a blisteringly hot 104°F (40°C). Weather in August »Weather in September
The first month of the autumn, September, is still a tropical month in Keystone, Florida, with an average temperature fluctuating between 77.5°F (25.3°C) and 86.7°F (30.4°C). The average high-temperature in September, at a still tropical 86.7°F (30.4°C), reveals a modest deviation from August's 88.3°F (31.3°C). Weather in September »Weather in October
October, like September, in Keystone, Florida, is another warm autumn month, with an average temperature varying between 70.9°F (21.6°C) and 81.5°F (27.5°C). The average high-temperature is a warm 81.5°F (27.5°C) in October, hardly different from the 86.7°F (30.4°C) recorded in September. Weather in October »Weather in November
November, the last month of the autumn in Keystone, is also a moderately hot month, with an average temperature varying between 63.3°F (17.4°C) and 74.3°F (23.5°C). November signifies a minor drop in average high-temperature, transitioning from a warm 81.5°F (27.5°C) in October to a still moderately hot 74.3°F (23.5°C). Weather in November »Weather in December
December, the first month of the winter in Keystone, is also an agreeable month, with an average temperature ranging between max 70.2°F (21.2°C) and min 59.4°F (15.2°C). The arrival of December marks a slight shift to an average high-temperature of a pleasant 70.2°F (21.2°C) from November's 74.3°F (23.5°C). Weather in December »Updated: Aug 30, 2024
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Keystone reaches its average lowest temperatures in January, measuring 66°F (18.9°C) at the peak and 54.5°F (12.5°C) at the lowest.
In Keystone, during the entire year, the rain falls for 120.5 days and collects up to 9.45" (240mm) of precipitation.
With an average maximum UV index of 4, January is the month with the lowest UV index.
The month with the least rainfall is March, when the rain falls for 6.8 days and typically collects 0.2" (5mm) of precipitation.
On Sunday, March 10. 2024, at 2:00 am, Daylight Saving Time starts, and the time zone changes from EST to EDT. Daylight Saving Time ends Sunday, November 3. 2024, at 2:00 am, and the time zone reverts from EDT to EST.
May is the least humid month, with an average relative humidity of 72%.
May has the most sunshine of the year, with an average of 11.3h of sunshine.
May through September, with an average maximum UV index of 7, are months with the highest UV index.
The month with the longest days is June, with an average of 13h and 54min of daylight.
July is the month with the most rainfall. Rain falls for 17.8 days and accumulates 1.77" (45mm) of precipitation.
August brings the highest temperatures, with an average high of 88.3°F (31.3°C) and an average low of 80.2°F (26.8°C).
With an average relative humidity of 77%, December is the most humid month.
With an average of 10h and 24min of daylight, December has the shortest days of the year in Keystone.
December has the least sunshine of the year, with an average of 6.5h of sunshine.
Average temperature
Keystone, FL
The warmest month (with the highest average high temperature) is August (88.3°F).
The month with the lowest average high temperature is January (66°F).
The month with the highest average low temperature is August (80.2°F).
The coldest month (with the lowest average low temperature) is January (54.5°F).
Average pressure
Keystone, FL
- Average pressure in January:
30.14"Hg - Average pressure in February:
30.11"Hg - Average pressure in March:
30.09"Hg - Average pressure in April:
30.02"Hg - Average pressure in May:
30.01"Hg - Average pressure in June:
29.99"Hg
- Average pressure in July:
30.02"Hg - Average pressure in August:
29.98"Hg - Average pressure in September:
29.96"Hg - Average pressure in October:
29.98"Hg - Average pressure in November:
30.08"Hg - Average pressure in December:
30.11"Hg
The month with the highest atmospheric pressure is January (30.14"Hg).
The month with the lowest atmospheric pressure is September (29.96"Hg).
Average wind speed
Keystone, FL
- Average wind speed in January:
8.9mph - Average wind speed in February:
8.5mph - Average wind speed in March:
8.9mph - Average wind speed in April:
8.9mph - Average wind speed in May:
8.1mph - Average wind speed in June:
7.1mph
- Average wind speed in July:
6.7mph - Average wind speed in August:
7mph - Average wind speed in September:
7.3mph - Average wind speed in October:
8.6mph - Average wind speed in November:
8.6mph - Average wind speed in December:
8.5mph
The windiest months (with the highest average wind speed) are January, March and April (8.9mph).
The calmest month (with the lowest average wind speed) is July (6.7mph).
Average humidity
Keystone, FL
The month with the highest relative humidity is December (77%).
The month with the lowest relative humidity is May (72%).
Average rainfall
Keystone, FL
- Average rainfall in January:
0.35" - Average rainfall in February:
0.47" - Average rainfall in March:
0.2" - Average rainfall in April:
0.51" - Average rainfall in May:
0.59" - Average rainfall in June:
1.22"
- Average rainfall in July:
1.77" - Average rainfall in August:
1.65" - Average rainfall in September:
0.71" - Average rainfall in October:
0.63" - Average rainfall in November:
0.39" - Average rainfall in December:
0.94"
The wettest month (with the highest rainfall) is July (1.77").
The driest month (with the least rainfall) is March (0.2").
Average rainfall days
Keystone, FL
- Average rainfall days in January:
5.7 days - Average rainfall days in February:
5.9 days - Average rainfall days in March:
6.8 days - Average rainfall days in April:
7.9 days - Average rainfall days in May:
9.2 days - Average rainfall days in June:
13.4 days
- Average rainfall days in July:
17.8 days - Average rainfall days in August:
17.9 days - Average rainfall days in September:
15.7 days - Average rainfall days in October:
8.2 days - Average rainfall days in November:
5.5 days - Average rainfall days in December:
6.5 days
The month with the highest number of rainy days is August (17.9 days).
The month with the least rainy days is November (5.5 days).
Average daylight / Average sunshine
Keystone, FL
- Average daylight in January:
10h and 36min - Average daylight in February:
11h and 12min - Average daylight in March:
12h and 0min - Average daylight in April:
12h and 54min - Average daylight in May:
13h and 36min - Average daylight in June:
13h and 54min
- Average daylight in July:
13h and 42min - Average daylight in August:
13h and 6min - Average daylight in September:
12h and 18min - Average daylight in October:
11h and 30min - Average daylight in November:
10h and 48min - Average daylight in December:
10h and 24min
The month with the longest days is June (Average daylight: 13h and 54min).
The month with the shortest days is December (Average daylight: 10h and 24min).
- Average sunshine in January:
7h and 12min - Average sunshine in February:
8h and 30min - Average sunshine in March:
8h and 48min - Average sunshine in April:
9h and 36min - Average sunshine in May:
11h and 18min - Average sunshine in June:
11h and 0min
- Average sunshine in July:
11h and 6min - Average sunshine in August:
9h and 48min - Average sunshine in September:
9h and 12min - Average sunshine in October:
7h and 54min - Average sunshine in November:
6h and 42min - Average sunshine in December:
6h and 30min
The month with the most sunshine is May (Average sunshine: 11h and 18min).
The month with the least sunshine is December (Average sunshine: 6h and 30min).
Average sunshine days
Keystone, FL
- Average sunshine days in January:
23.4 days - Average sunshine days in February:
20.4 days - Average sunshine days in March:
23 days - Average sunshine days in April:
21 days - Average sunshine days in May:
17.2 days - Average sunshine days in June:
11.2 days
- Average sunshine days in July:
6.7 days - Average sunshine days in August:
8 days - Average sunshine days in September:
10.6 days - Average sunshine days in October:
19.7 days - Average sunshine days in November:
23 days - Average sunshine days in December:
23.3 days
The month with the most sunshine days is January (23.4 days).
The month with the least sunshine days is July (6.7 days).
Average UV index
Keystone, FL
The months with the highest UV index are May, June, July, August and September (UV index 7).
The month with the lowest UV index is January (UV index 4).
Average cloud cover
Keystone, FL
The months with the most cloud cover are January and December (Cloud cover 30).
The month with the least cloud cover is May (Cloud cover 20).
Average visibility
Keystone, FL
The months with the highest visibility are January, February, March, April, May, June, July, August, September, October, November and December (6mi).
The months with the lowest visibility are January, February, March, April, May, June, July, August, September, October, November and December (6mi).
