Climate and monthly weather forecastFairfax, IN
Climate and monthly weather forecast
Weather in January
January, the same as December, in Fairfax, Indiana, is another subzero cold winter month, with an average temperature fluctuating between 19.2°F (-7.1°C) and 30.7°F (-0.7°C). With average high temperatures of 30.7°F (-0.7°C) and lows of 19.2°F (-7.1°C), January is the coldest month. Weather in January »Weather in February
The last month of the winter, February, is a wintry month in Fairfax, Indiana, with an average temperature varying between 22.3°F (-5.4°C) and 34.3°F (1.3°C). The beginning of February records an average high-temperature of a cold 34.3°F (1.3°C), almost echoing the conditions of the previous month. Weather in February »Weather in March
The first month of the spring, March, is a frosty month in Fairfax, Indiana, with an average temperature ranging between max 46°F (7.8°C) and min 31.6°F (-0.2°C). An escalation in the average high-temperature is seen with the onset of March, moving from a wintry 34.3°F (1.3°C) in February to a chilly 46°F (7.8°C). Weather in March »Weather in April
April is a refreshing spring month in Fairfax, Indiana, with an average temperature ranging between max 58.3°F (14.6°C) and min 41.7°F (5.4°C). As April arrives, a rise in the average high-temperature is observed, moving from a chilly 46°F (7.8°C) in March to a mild 58.3°F (14.6°C). Weather in April »Weather in May
May, the last month of the spring in Fairfax, is a pleasant month, with an average temperature ranging between max 70.3°F (21.3°C) and min 53.1°F (11.7°C). The start of May brings a rise in the average high-temperature, moving from a refreshing 58.3°F (14.6°C) in April to a pleasant 70.3°F (21.3°C). Weather in May »Weather in June
The first month of the summer, June, is a warm month in Fairfax, Indiana, with an average temperature ranging between max 78.1°F (25.6°C) and min 61°F (16.1°C). Fairfax's transition into June sees a mild rise in the average high-temperature, edging from a pleasant 70.3°F (21.3°C) in May to a warm 78.1°F (25.6°C). Weather in June »Weather in July
July, like June, in Fairfax, Indiana, is a moderately hot summer month, with temperature in the range of an average high of 81.1°F (27.3°C) and an average low of 63.9°F (17.7°C). July, with average temperatures reaching a high of 81.1°F (27.3°C) and a low of 63.9°F (17.7°C), is the warmest month. July's heat index is calculated to be a hot 86°F (30°C). Weather in July »Weather in August
The last month of the summer, August, is another warm month in Fairfax, Indiana, with temperature in the range of an average high of 79.3°F (26.3°C) and an average low of 61.3°F (16.3°C). The commencement of August introduces an average high-temperature of a still moderately hot 79.3°F (26.3°C), closely mirroring the preceding month. Weather in August »Weather in September
September, the first month of the autumn in Fairfax, is still a warm month, with temperature in the range of an average low of 55.4°F (13°C) and an average high of 73.9°F (23.3°C). With the beginning of September, the average high-temperature shows a small decrease, transitioning from 79.3°F (26.3°C) in August to a still warm 73.9°F (23.3°C). Weather in September »Weather in October
October, like September, in Fairfax, Indiana, is another refreshing autumn month, with an average temperature varying between 45.5°F (7.5°C) and 61.3°F (16.3°C). Fairfax's average high-temperature decreases in October, falling from a warm 73.9°F (23.3°C) in September to a refreshing 61.3°F (16.3°C). Weather in October »Weather in November
November, the last month of the autumn in Fairfax, is another chilly month, with an average temperature varying between 34.7°F (1.5°C) and 47.5°F (8.6°C). Fairfax's November weather features a mild decline in high-temperatures, reducing from a refreshing 61.3°F (16.3°C) in October to a frosty 47.5°F (8.6°C). Weather in November »Weather in December
The first month of the winter, December, is also an icy month in Fairfax, Indiana, with temperature in the range of an average low of 27°F (-2.8°C) and an average high of 36.5°F (2.5°C). The onset of December comes with a shift in the average high-temperature, falling from a chilly 47.5°F (8.6°C) in November to a cold 36.5°F (2.5°C). Weather in December »Updated: Aug 20, 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 stands out as Fairfax's coldest month, with temperatures ranging between an average high of 30.7°F (-0.7°C) and a low of 19.2°F (-7.1°C).
January and February, with an average relative humidity of 84%, are most humid months.
Throughout the year, there are 151.9 rainfall days, and 23.39" (594mm) of precipitation is accumulated.
January through May, October through December are months with snowfall.
In Fairfax, during the entire year, snow falls for 50 days and aggregates up to 12.68" (322mm) of snow.
The month with the least sunshine is January, with an average of 3.3h of sunshine.
The month with the least rainfall is February, when the rain falls for 6.8 days and typically collects 1.38" (35mm) of precipitation.
February is the month with the most snowfall. Snow falls for 12.7 days and accumulates 3.58" (91mm) of snow.
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.
April is the month with the most rainfall. Rain falls for 15.6 days and accumulates 2.95" (75mm) of precipitation.
In Fairfax, snow does not fall in June through September.
June has the longest days of the year, with an average of 15h and 6min of daylight.
June is the month with the highest UV index, with an average maximum UV index of 6.
Fairfax's warmest weather arrives in July, when temperatures average a high of 81.1°F (27.3°C) and a low of 63.9°F (17.7°C).
With an average of 10.1h of sunshine, July has the most sunshine of the year.
The least humid month is October, with an average relative humidity of 75%.
December has the shortest days of the year, with an average of 9h and 18min of daylight.
December is the month with the lowest UV index, with an average maximum UV index of 1.
Average temperature
Fairfax, IN
The warmest month (with the highest average high temperature) is July (81.1°F).
The month with the lowest average high temperature is January (30.7°F).
The month with the highest average low temperature is July (63.9°F).
The coldest month (with the lowest average low temperature) is January (19.2°F).
Average pressure
Fairfax, IN
- Average pressure in January:
30.11"Hg - Average pressure in February:
30.09"Hg - Average pressure in March:
30.09"Hg - Average pressure in April:
29.96"Hg - Average pressure in May:
29.97"Hg - Average pressure in June:
29.93"Hg
- Average pressure in July:
29.97"Hg - Average pressure in August:
29.98"Hg - Average pressure in September:
30.04"Hg - Average pressure in October:
30.02"Hg - Average pressure in November:
30.11"Hg - Average pressure in December:
30.1"Hg
The months with the highest atmospheric pressure are January and November (30.11"Hg).
The month with the lowest atmospheric pressure is June (29.93"Hg).
Average wind speed
Fairfax, IN
- Average wind speed in January:
10.5mph - Average wind speed in February:
10.1mph - Average wind speed in March:
9.6mph - Average wind speed in April:
10.1mph - Average wind speed in May:
8.4mph - Average wind speed in June:
7.5mph
- Average wind speed in July:
6.3mph - Average wind speed in August:
6.1mph - Average wind speed in September:
6.9mph - Average wind speed in October:
8.8mph - Average wind speed in November:
9.5mph - Average wind speed in December:
9.7mph
The windiest month (with the highest average wind speed) is January (10.5mph).
The calmest month (with the lowest average wind speed) is August (6.1mph).
Average humidity
Fairfax, IN
The months with the highest relative humidity are January and February (84%).
The month with the lowest relative humidity is October (75%).
Average rainfall
Fairfax, IN
- Average rainfall in January:
1.42" - Average rainfall in February:
1.38" - Average rainfall in March:
2.01" - Average rainfall in April:
2.95" - Average rainfall in May:
2.91" - Average rainfall in June:
2.48"
- Average rainfall in July:
2.28" - Average rainfall in August:
1.85" - Average rainfall in September:
1.54" - Average rainfall in October:
1.5" - Average rainfall in November:
1.61" - Average rainfall in December:
1.46"
The wettest month (with the highest rainfall) is April (2.95").
The driest month (with the least rainfall) is February (1.38").
Average rainfall days
Fairfax, IN
- Average rainfall days in January:
7.9 days - Average rainfall days in February:
6.8 days - Average rainfall days in March:
11.5 days - Average rainfall days in April:
15.6 days - Average rainfall days in May:
17.8 days - Average rainfall days in June:
16.7 days
- Average rainfall days in July:
15.8 days - Average rainfall days in August:
14.8 days - Average rainfall days in September:
12.9 days - Average rainfall days in October:
13.2 days - Average rainfall days in November:
9.4 days - Average rainfall days in December:
9.5 days
The month with the highest number of rainy days is May (17.8 days).
The month with the least rainy days is February (6.8 days).
Average snowfall
Fairfax, IN
- Average snowfall in January:
2.91" - Average snowfall in February:
3.58" - Average snowfall in March:
1.54" - Average snowfall in April:
0.63" - Average snowfall in May:
0.04" - Average snowfall in June:
0"
The month with the highest snowfall is February (3.58").
The months with the least snowfall are June, July, August and September (0").
Average snowfall days
Fairfax, IN
- Average snowfall days in January:
13.3 days - Average snowfall days in February:
12.7 days - Average snowfall days in March:
6.5 days - Average snowfall days in April:
1.8 days - Average snowfall days in May:
0.1 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:
0.4 days - Average snowfall days in November:
4.5 days - Average snowfall days in December:
10.7 days
The month with the highest number of snowfall days is January (13.3 days).
The months with the least snowfall days are June, July, August and September (0 days).
Average daylight / Average sunshine
Fairfax, IN
- Average daylight in January:
9h and 36min - Average daylight in February:
10h and 42min - Average daylight in March:
12h and 0min - Average daylight in April:
13h and 18min - Average daylight in May:
14h and 30min - Average daylight in June:
15h and 6min
- Average daylight in July:
14h and 48min - Average daylight in August:
13h and 48min - Average daylight in September:
12h and 30min - Average daylight in October:
11h and 6min - Average daylight in November:
9h and 54min - Average daylight in December:
9h and 18min
The month with the longest days is June (Average daylight: 15h and 6min).
The month with the shortest days is December (Average daylight: 9h and 18min).
- Average sunshine in January:
3h and 18min - Average sunshine in February:
4h and 18min - Average sunshine in March:
5h and 42min - Average sunshine in April:
6h and 48min - Average sunshine in May:
8h and 24min - Average sunshine in June:
9h and 54min
- Average sunshine in July:
10h and 6min - Average sunshine in August:
9h and 30min - Average sunshine in September:
7h and 54min - Average sunshine in October:
6h and 6min - Average sunshine in November:
5h and 0min - Average sunshine in December:
3h and 42min
The month with the most sunshine is July (Average sunshine: 10h and 6min).
The month with the least sunshine is January (Average sunshine: 3h and 18min).
Average sunshine days
Fairfax, IN
- Average sunshine days in January:
12 days - Average sunshine days in February:
10.4 days - Average sunshine days in March:
14.2 days - Average sunshine days in April:
11.3 days - Average sunshine days in May:
10.8 days - Average sunshine days in June:
10.9 days
- Average sunshine days in July:
11.8 days - Average sunshine days in August:
12.4 days - Average sunshine days in September:
15 days - Average sunshine days in October:
15.9 days - Average sunshine days in November:
16.1 days - Average sunshine days in December:
13.4 days
The month with the most sunshine days is November (16.1 days).
The month with the least sunshine days is February (10.4 days).
Average UV index
Fairfax, IN
The month with the highest UV index is June (UV index 6).
The month with the lowest UV index is December (UV index 1).
Average cloud cover
Fairfax, IN
The month with the most cloud cover is January (Cloud cover 66).
The months with the least cloud cover are July and August (Cloud cover 33).
Average visibility
Fairfax, IN
The months with the highest visibility are February, March, April, May, June, July, September, October, November and December (6mi).
The months with the lowest visibility are January and August (5mi).
