Climate and monthly weather forecastMonticello, IN
Climate and monthly weather forecast
Weather in January
January, the same as December, in Monticello, Indiana, is another subzero cold winter month, with an average temperature fluctuating between 19°F (-7.2°C) and 30.6°F (-0.8°C). January stands out as Monticello's coldest month, with temperatures ranging between an average high of 30.6°F (-0.8°C) and a low of 19°F (-7.2°C). Weather in January »Weather in February
The last month of the winter, February, is an icy month in Monticello, Indiana, with an average temperature varying between 22.5°F (-5.3°C) and 35.2°F (1.8°C). During February, the average high-temperature is a cold 35.2°F (1.8°C), maintaining a close resemblance to that of the preceding month. Weather in February »Weather in March
The first month of the spring, March, is a frosty month in Monticello, Indiana, with temperature in the range of an average low of 33.4°F (0.8°C) and an average high of 47.8°F (8.8°C). Monticello's March weather shows an increase in high-temperatures, moving from February's wintry 35.2°F (1.8°C) to a chilly 47.8°F (8.8°C). Weather in March »Weather in April
April in Monticello, Indiana, is a refreshing spring month, with an average temperature fluctuating between 43.5°F (6.4°C) and 59.4°F (15.2°C). April's arrival coincides with a rise in the average high-temperature, moving from March's frosty 47.8°F (8.8°C) to a moderate 59.4°F (15.2°C). Weather in April »Weather in May
May, the last month of the spring in Monticello, is an agreeable month, with an average temperature varying between 71.1°F (21.7°C) and 54.5°F (12.5°C). With the transition into May, Monticello experiences an increase in average high-temperatures, moving up from a mild 59.4°F (15.2°C) in April to a pleasant 71.1°F (21.7°C). Weather in May »Weather in June
June, the first month of the summer in Monticello, is a warm month, with an average temperature fluctuating between 62.2°F (16.8°C) and 79.3°F (26.3°C). As June arrives, a slight rise in the average high-temperature is observed, moving from a pleasant 71.1°F (21.7°C) in May to a warm 79.3°F (26.3°C). Weather in June »Weather in July
July, like June, in Monticello, Indiana, is another warm summer month, with an average temperature ranging between max 81°F (27.2°C) and min 64°F (17.8°C). July, recording an average high temperature of 81°F (27.2°C) and a low temperature of 64°F (17.8°C), is Monticello's warmest month. July's mean heat index is computed to be a tropical 87.8°F (31°C). Weather in July »Weather in August
August, the last month of the summer in Monticello, is another warm month, with an average temperature ranging between min 62.4°F (16.9°C) and max 79.5°F (26.4°C). August's presence marks an average high-temperature of a still moderately hot 79.5°F (26.4°C), subtly varied from July's 81°F (27.2°C). Weather in August »Weather in September
September, the first month of the autumn in Monticello, is still a warm month, with an average temperature varying between 74.8°F (23.8°C) and 56.8°F (13.8°C). Transitioning into September, Monticello records an average high-temperature of a still moderately hot 74.8°F (23.8°C), almost identical to August's 79.5°F (26.4°C). Weather in September »Weather in October
October, the same as September, is another comfortable autumn month in Monticello, Indiana, with an average temperature fluctuating between 46.6°F (8.1°C) and 62.1°F (16.7°C). October brings a decrease in the average high-temperature, shifting from a warm 74.8°F (23.8°C) in September to a refreshing 62.1°F (16.7°C). Weather in October »Weather in November
The last month of the autumn, November, is another chilly month in Monticello, Indiana, with an average temperature ranging between min 34.7°F (1.5°C) and max 47.7°F (8.7°C). In November, the average high-temperature decreases considerably from a comfortable 62.1°F (16.7°C) in October to a chilly 47.7°F (8.7°C). Weather in November »Weather in December
The first month of the winter, December, is still a cold month in Monticello, Indiana, with temperature in the range of an average low of 26.4°F (-3.1°C) and an average high of 36.7°F (2.6°C). Monticello in December undergoes a mild reduction in the average high-temperature, shifting from November's frosty 47.7°F (8.7°C) to a cold 36.7°F (2.6°C). Weather in December »Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature
Monticello, IN
The warmest month (with the highest average high temperature) is July (81°F).
The month with the lowest average high temperature is January (30.6°F).
The month with the highest average low temperature is July (64°F).
The coldest month (with the lowest average low temperature) is January (19°F).
Average pressure
Monticello, IN
- Average pressure in January:
30.12"Hg - Average pressure in February:
30.1"Hg - Average pressure in March:
30.08"Hg - Average pressure in April:
29.95"Hg - Average pressure in May:
29.97"Hg - Average pressure in June:
29.93"Hg
- Average pressure in July:
29.98"Hg - Average pressure in August:
29.98"Hg - Average pressure in September:
30.03"Hg - Average pressure in October:
30.02"Hg - Average pressure in November:
30.11"Hg - Average pressure in December:
30.11"Hg
The month with the highest atmospheric pressure is January (30.12"Hg).
The month with the lowest atmospheric pressure is June (29.93"Hg).
Average wind speed
Monticello, IN
- Average wind speed in January:
10.2mph - Average wind speed in February:
9.9mph - Average wind speed in March:
9.6mph - Average wind speed in April:
9.9mph - Average wind speed in May:
8.4mph - Average wind speed in June:
7.4mph
- Average wind speed in July:
6.2mph - Average wind speed in August:
6.2mph - Average wind speed in September:
7mph - Average wind speed in October:
8.8mph - Average wind speed in November:
9.5mph - Average wind speed in December:
9.5mph
The windiest month (with the highest average wind speed) is January (10.2mph).
The calmest months (with the lowest average wind speed) are July and August (6.2mph).
Average humidity
Monticello, IN
The month with the highest relative humidity is July (84%).
The month with the lowest relative humidity is October (72%).
Average rainfall
Monticello, IN
- Average rainfall in January:
1.22" - Average rainfall in February:
1.14" - Average rainfall in March:
1.97" - Average rainfall in April:
2.83" - Average rainfall in May:
3.11" - Average rainfall in June:
2.52"
- Average rainfall in July:
2.64" - Average rainfall in August:
2.17" - Average rainfall in September:
1.34" - Average rainfall in October:
1.57" - Average rainfall in November:
1.34" - Average rainfall in December:
1.26"
The wettest month (with the highest rainfall) is May (3.11").
The driest month (with the least rainfall) is February (1.14").
Average rainfall days
Monticello, IN
- Average rainfall days in January:
6.9 days - Average rainfall days in February:
7.3 days - Average rainfall days in March:
12.3 days - Average rainfall days in April:
16.1 days - Average rainfall days in May:
19.2 days - Average rainfall days in June:
17.8 days
- Average rainfall days in July:
17.7 days - Average rainfall days in August:
15.6 days - Average rainfall days in September:
12.4 days - Average rainfall days in October:
12.4 days - Average rainfall days in November:
9.9 days - Average rainfall days in December:
9.5 days
The month with the highest number of rainy days is May (19.2 days).
The month with the least rainy days is January (6.9 days).
Average snowfall
Monticello, IN
The month with the highest snowfall is January (2.95").
The months with the least snowfall are May, June, July, August, September and October (0").
Average snowfall days
Monticello, IN
- Average snowfall days in January:
12.6 days - Average snowfall days in February:
9.7 days - Average snowfall days in March:
5.1 days - Average snowfall days in April:
1.7 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:
3.6 days - Average snowfall days in December:
8.8 days
The month with the highest number of snowfall days is January (12.6 days).
The months with the least snowfall days are June, July, August and September (0 days).
Average daylight / Average sunshine
Monticello, IN
- Average daylight in January:
9h and 42min - 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 0min
- Average daylight in July:
14h and 48min - Average daylight in August:
13h and 42min - 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 0min).
The month with the shortest days is December (Average daylight: 9h and 18min).
- Average sunshine in January:
3h and 48min - Average sunshine in February:
5h and 0min - Average sunshine in March:
6h and 12min - Average sunshine in April:
7h and 0min - Average sunshine in May:
8h and 36min - Average sunshine in June:
9h and 54min
- Average sunshine in July:
9h and 54min - Average sunshine in August:
9h and 12min - Average sunshine in September:
8h and 12min - Average sunshine in October:
6h and 36min - Average sunshine in November:
5h and 12min - Average sunshine in December:
4h and 12min
The months with the most sunshine are June and July (Average sunshine: 9h and 54min).
The month with the least sunshine is January (Average sunshine: 3h and 48min).
Average sunshine days
Monticello, IN
- Average sunshine days in January:
13.1 days - Average sunshine days in February:
12.3 days - Average sunshine days in March:
13.4 days - Average sunshine days in April:
10.9 days - Average sunshine days in May:
9.4 days - Average sunshine days in June:
9.7 days
- Average sunshine days in July:
9.6 days - Average sunshine days in August:
11.2 days - Average sunshine days in September:
15.4 days - Average sunshine days in October:
16.4 days - Average sunshine days in November:
17.4 days - Average sunshine days in December:
14.7 days
The month with the most sunshine days is November (17.4 days).
The month with the least sunshine days is May (9.4 days).
Average UV index
Monticello, IN
The months with the highest UV index are June and July (UV index 6).
The month with the lowest UV index is December (UV index 1).
Average cloud cover
Monticello, IN
The month with the most cloud cover is January (Cloud cover 61).
The month with the least cloud cover is August (Cloud cover 33).
Average visibility
Monticello, IN
The months with the highest visibility are February, March, April, May, June, September, October, November and December (6mi).
The months with the lowest visibility are January, July and August (5mi).





