Climate and monthly weather forecastSaint Johns, TN
Climate and monthly weather forecast
Weather in January
January, like December, is another chilly winter month in Saint Johns, Tennessee, with temperature in the range of an average high of 45.1°F (7.3°C) and an average low of 30.7°F (-0.7°C). With average temperatures fluctuating between a high of 45.1°F (7.3°C) and a low of 30.7°F (-0.7°C), January stands out as the coldest month. Weather in January »Weather in February
The last month of the winter, February, is a fresh month in Saint Johns, Tennessee, with temperature in the range of an average high of 50°F (10°C) and an average low of 34.9°F (1.6°C). As January turns into February, the average high-temperatures rest at a fresh 50°F (10°C), showing a minor variation from the prior month. Weather in February »Weather in March
March, the first month of the spring in Saint Johns, is a refreshing month, with temperature in the range of an average high of 59°F (15°C) and an average low of 41.5°F (5.3°C). With the onset of March, Saint Johns's weather sees a temperature rise, transitioning from a cool 50°F (10°C) in February to a moderate 59°F (15°C). Weather in March »Weather in April
April in Saint Johns, Tennessee, is a pleasant spring month, with an average temperature ranging between min 50°F (10°C) and max 69.4°F (20.8°C). The shift into April brings an increase in the average high-temperature, moving from a refreshing 59°F (15°C) in March to a pleasant 69.4°F (20.8°C). Weather in April »Weather in May
May, the last month of the spring in Saint Johns, is a warm month, with temperature in the range of an average high of 77.5°F (25.3°C) and an average low of 58.5°F (14.7°C). The shift into May is characterized by a subtle rise in the average high-temperature, transitioning from April's agreeable 69.4°F (20.8°C) to a moderately hot 77.5°F (25.3°C). Weather in May »Weather in June
The first month of the summer, June, is also a moderately hot month in Saint Johns, Tennessee, with an average temperature varying between 85.6°F (29.8°C) and 65.5°F (18.6°C). June's onset witnesses a minor shift in the average high-temperature, moving from a warm 77.5°F (25.3°C) in May to a still moderately hot 85.6°F (29.8°C). Weather in June »Weather in July
July in Saint Johns, Tennessee, is a hot summer month, with temperature in the range of an average low of 68.5°F (20.3°C) and an average high of 87.8°F (31°C). July is the month when Saint Johns experiences its warmest temperatures, averaging a high of 87.8°F (31°C) and a low of 68.5°F (20.3°C). July's heat index is computed to be a blisteringly hot 104°F (40°C). Weather in July »Weather in August
The last month of the summer, August, is another tropical month in Saint Johns, Tennessee, with an average temperature varying between 67.6°F (19.8°C) and 86.9°F (30.5°C). Saint Johns ushers in August with an average high-temperature of a still tropical 86.9°F (30.5°C), showing a close resemblance to the previous month. Weather in August »Weather in September
September, the first month of the autumn in Saint Johns, is still a warm month, with an average temperature fluctuating between 61.9°F (16.6°C) and 81.5°F (27.5°C). September signifies a gentle decline in Saint Johns's average high-temperature, easing from a tropical 86.9°F (30.5°C) in August to a warm 81.5°F (27.5°C). Weather in September »Weather in October
October, the same as September, in Saint Johns, Tennessee, is an agreeable autumn month, with an average temperature fluctuating between 50.4°F (10.2°C) and 69.6°F (20.9°C). Welcoming October, Saint Johns observes a shift in the average high-temperature, falling from September's moderately hot 81.5°F (27.5°C) to a pleasant 69.6°F (20.9°C). Weather in October »Weather in November
November, the last month of the autumn in Saint Johns, is also a moderate month, with an average temperature varying between 57.6°F (14.2°C) and 40.8°F (4.9°C). A change in temperatures is noted as October gives way to November, with average highs reducing from an agreeable 69.6°F (20.9°C) to a mild 57.6°F (14.2°C). Weather in November »Weather in December
December, the first month of the winter in Saint Johns, is still a chilly month, with an average temperature ranging between min 35.8°F (2.1°C) and max 49.3°F (9.6°C). Transition into December subtly marks a drop in the average high-temperature, moderately moving from a moderate 57.6°F (14.2°C) in November to a frosty 49.3°F (9.6°C). Weather in December »Updated: Aug 25, 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
January, on average, is the coldest month, registering a high temperature of 45.1°F (7.3°C) and a low of 30.7°F (-0.7°C).
Throughout the year, there are 123.1 rainfall days, and 12.76" (324mm) of precipitation is accumulated.
January through March, November and December are months with snowfall.
Throughout the year, there are 10.9 snowfall days, and 0.87" (22mm) of snow is accumulated.
January, February and December, with an average maximum UV index of 2, are months with the lowest UV index in Saint Johns.
February is the month with the most rainfall. Rain falls for 8.8 days and accumulates 1.5" (38mm) of precipitation.
The month with the most snowfall is February, when snow falls for 2.8 days and typically aggregates up to 0.31" (8mm) of snow.
With an average of 4.5h of sunshine, February has the least sunshine of the year.
On Sunday, March 10. 2024, at 2:00 am, Daylight Saving Time starts, and the time zone changes from CST to CDT. Daylight Saving Time ends Sunday, November 3. 2024, at 2:00 am, and the time zone reverts from CDT to CST.
April through October are months without snowfall.
May through August, with an average maximum UV index of 6, are months with the highest UV index.
The month with the longest days is June, with an average of 14h and 36min of daylight.
With an average of 10.6h of sunshine, June has the most sunshine of the year.
In Saint Johns, the peak average temperatures are observed in July, with a high of 87.8°F (31°C) and a low of 68.5°F (20.3°C).
September is the month with the least rainfall. Rain falls for 8 days and accumulates 0.39" (10mm) of precipitation.
The least humid month is October, with an average relative humidity of 74%.
The most humid month is December, with an average relative humidity of 79%.
December has the shortest days of the year, with an average of 9h and 48min of daylight.
Average temperature
Saint Johns, TN
The warmest month (with the highest average high temperature) is July (87.8°F).
The month with the lowest average high temperature is January (45.1°F).
The month with the highest average low temperature is July (68.5°F).
The coldest month (with the lowest average low temperature) is January (30.7°F).
Average pressure
Saint Johns, TN
- Average pressure in January:
30.17"Hg - Average pressure in February:
30.12"Hg - Average pressure in March:
30.09"Hg - Average pressure in April:
29.99"Hg - Average pressure in May:
30.01"Hg - Average pressure in June:
29.97"Hg
- Average pressure in July:
30"Hg - Average pressure in August:
30"Hg - Average pressure in September:
30.03"Hg - Average pressure in October:
30.06"Hg - Average pressure in November:
30.16"Hg - Average pressure in December:
30.15"Hg
The month with the highest atmospheric pressure is January (30.17"Hg).
The month with the lowest atmospheric pressure is June (29.97"Hg).
Average wind speed
Saint Johns, TN
- Average wind speed in January:
7.6mph - Average wind speed in February:
8mph - Average wind speed in March:
7.6mph - Average wind speed in April:
7.6mph - Average wind speed in May:
6mph - Average wind speed in June:
5.1mph
- Average wind speed in July:
4.5mph - Average wind speed in August:
4.5mph - Average wind speed in September:
4.8mph - Average wind speed in October:
6mph - Average wind speed in November:
6.7mph - Average wind speed in December:
7.3mph
The windiest month (with the highest average wind speed) is February (8mph).
The calmest months (with the lowest average wind speed) are July and August (4.5mph).
Average humidity
Saint Johns, TN
The month with the highest relative humidity is December (79%).
The month with the lowest relative humidity is October (74%).
Average rainfall
Saint Johns, TN
- Average rainfall in January:
1.02" - Average rainfall in February:
1.5" - Average rainfall in March:
0.87" - Average rainfall in April:
1.1" - Average rainfall in May:
1.06" - Average rainfall in June:
1.22"
- Average rainfall in July:
1.42" - Average rainfall in August:
1.26" - Average rainfall in September:
0.39" - Average rainfall in October:
0.98" - Average rainfall in November:
0.83" - Average rainfall in December:
1.1"
The wettest month (with the highest rainfall) is February (1.5").
The driest month (with the least rainfall) is September (0.39").
Average rainfall days
Saint Johns, TN
- Average rainfall days in January:
8.9 days - Average rainfall days in February:
8.8 days - Average rainfall days in March:
10.5 days - Average rainfall days in April:
10.2 days - Average rainfall days in May:
12.7 days - Average rainfall days in June:
11.8 days
- Average rainfall days in July:
13.9 days - Average rainfall days in August:
13.3 days - Average rainfall days in September:
8 days - Average rainfall days in October:
8.1 days - Average rainfall days in November:
7.3 days - Average rainfall days in December:
9.6 days
The month with the highest number of rainy days is July (13.9 days).
The month with the least rainy days is November (7.3 days).
Average snowfall
Saint Johns, TN
The month with the highest snowfall is February (0.31").
The months with the least snowfall are April, May, June, July, August, September and October (0").
Average snowfall days
Saint Johns, TN
- Average snowfall days in January:
3.8 days - Average snowfall days in February:
2.8 days - Average snowfall days in March:
1.2 days - Average snowfall days in April:
0.2 days - Average snowfall days in May:
0 days - Average snowfall days in June:
0 days
- Average snowfall days in July:
0 days - Average snowfall days in August:
0 days - Average snowfall days in September:
0 days - Average snowfall days in October:
0.3 days - Average snowfall days in November:
0.9 days - Average snowfall days in December:
1.7 days
The month with the highest number of snowfall days is January (3.8 days).
The months with the least snowfall days are May, June, July, August and September (0 days).
Average daylight / Average sunshine
Saint Johns, TN
- Average daylight in January:
10h and 0min - Average daylight in February:
10h and 54min - Average daylight in March:
12h and 0min - Average daylight in April:
13h and 6min - Average daylight in May:
14h and 6min - Average daylight in June:
14h and 36min
- Average daylight in July:
14h and 18min - Average daylight in August:
13h and 30min - Average daylight in September:
12h and 24min - Average daylight in October:
11h and 18min - Average daylight in November:
10h and 18min - Average daylight in December:
9h and 48min
The month with the longest days is June (Average daylight: 14h and 36min).
The month with the shortest days is December (Average daylight: 9h and 48min).
- Average sunshine in January:
4h and 36min - Average sunshine in February:
4h and 30min - Average sunshine in March:
5h and 48min - Average sunshine in April:
9h and 0min - Average sunshine in May:
9h and 30min - Average sunshine in June:
10h and 36min
- Average sunshine in July:
10h and 18min - Average sunshine in August:
10h and 24min - Average sunshine in September:
8h and 36min - Average sunshine in October:
7h and 0min - Average sunshine in November:
5h and 48min - Average sunshine in December:
4h and 42min
The month with the most sunshine is June (Average sunshine: 10h and 36min).
The month with the least sunshine is February (Average sunshine: 4h and 30min).
Average sunshine days
Saint Johns, TN
- Average sunshine days in January:
18.8 days - Average sunshine days in February:
16.5 days - Average sunshine days in March:
16.8 days - Average sunshine days in April:
16.7 days - Average sunshine days in May:
15.1 days - Average sunshine days in June:
14 days
- Average sunshine days in July:
13.3 days - Average sunshine days in August:
14.2 days - Average sunshine days in September:
18.9 days - Average sunshine days in October:
20.8 days - Average sunshine days in November:
21.2 days - Average sunshine days in December:
18.5 days
The month with the most sunshine days is November (21.2 days).
The month with the least sunshine days is July (13.3 days).
Average UV index
Saint Johns, TN
The months with the highest UV index are May, June, July and August (UV index 6).
The months with the lowest UV index are January, February and December (UV index 2).
Average cloud cover
Saint Johns, TN
The month with the most cloud cover is February (Cloud cover 53).
The month with the least cloud cover is June (Cloud cover 29).
Average visibility
Saint Johns, TN
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).
