Climate and monthly weather forecastPetroleum, IN
Climate and monthly weather forecast
Weather in January
January, like December, is another subzero cold winter month in Petroleum, Indiana, with temperature in the range of an average high of 31.6°F (-0.2°C) and an average low of 20.1°F (-6.6°C). The coldest period tends to be January, when average temperatures fluctuate between a high of 31.6°F (-0.2°C) and a low of 20.1°F (-6.6°C). Weather in January »Weather in February
February, the last month of the winter in Petroleum, is a cold month, with an average temperature fluctuating between 23.5°F (-4.7°C) and 35.8°F (2.1°C). In February, Petroleum notes an average high-temperature of a wintry 35.8°F (2.1°C), hardly different from the preceding month. Weather in February »Weather in March
The first month of the spring, March, is a chilly month in Petroleum, Indiana, with temperature in the range of an average low of 32.9°F (0.5°C) and an average high of 47.5°F (8.6°C). With the onset of March, the average high-temperature slightly shifts from February's wintry 35.8°F (2.1°C) to a frosty 47.5°F (8.6°C). Weather in March »Weather in April
April in Petroleum, Indiana, is a refreshing spring month, with an average temperature varying between 59.5°F (15.3°C) and 43.2°F (6.2°C). The beginning of April signals a rise in the average high-temperature, moving from a frosty 47.5°F (8.6°C) in March to a mild 59.5°F (15.3°C). Weather in April »Weather in May
May, the last month of the spring in Petroleum, is an agreeable month, with an average temperature varying between 71.1°F (21.7°C) and 54.3°F (12.4°C). May sees a temperature increase, moving from a mild 59.5°F (15.3°C) in April to an agreeable 71.1°F (21.7°C). Weather in May »Weather in June
The first month of the summer, June, is a warm month in Petroleum, Indiana, with an average temperature varying between 78.3°F (25.7°C) and 61.9°F (16.6°C). June brings a slight elevation in the average high-temperature, transitioning from May's pleasant 71.1°F (21.7°C) to a moderately hot 78.3°F (25.7°C). Weather in June »Weather in July
July, like June, in Petroleum, 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 64°F (17.8°C). With an average high-temperature of 81.1°F (27.3°C) and an average low-temperature of 64°F (17.8°C), July is the warmest month. Throughout July, the heat index is estimated at a tropical 87.8°F (31°C). Weather in July »Weather in August
August, the last month of the summer in Petroleum, is also a moderately hot month, with an average temperature ranging between max 79.2°F (26.2°C) and min 61.7°F (16.5°C). Petroleum records an average high-temperature of a still warm 79.2°F (26.2°C) as August arrives, nearly mirroring the previous month's climate. Weather in August »Weather in September
The first month of the autumn, September, is still a warm month in Petroleum, Indiana, with an average temperature fluctuating between 74.1°F (23.4°C) and 56.3°F (13.5°C). As August turns into September, the average high-temperatures rest at a still moderately hot 74.1°F (23.4°C), showing a minor variation from the prior month. Weather in September »Weather in October
October, the same as September, is another refreshing autumn month in Petroleum, Indiana, with an average temperature fluctuating between 46.2°F (7.9°C) and 61.7°F (16.5°C). Arrival of October comes with a reduction in the average high-temperature, falling from a moderately hot 74.1°F (23.4°C) in September to an enjoyable 61.7°F (16.5°C). Weather in October »Weather in November
The last month of the autumn, November, is also a frosty month in Petroleum, Indiana, with an average temperature fluctuating between 35.1°F (1.7°C) and 48.2°F (9°C). During the transition into November, Petroleum observes a decrease in the average high-temperature, falling from an enjoyable 61.7°F (16.5°C) in October to a frosty 48.2°F (9°C). Weather in November »Weather in December
December, the first month of the winter in Petroleum, is still a cold month, with an average temperature fluctuating between 36.7°F (2.6°C) and 27.3°F (-2.6°C). Petroleum in December demonstrates a small temperature transition, adjusting from an average high of a chilly 48.2°F (9°C) in November to an icy 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
Petroleum, 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 (31.6°F).
The month with the highest average low temperature is July (64°F).
The coldest month (with the lowest average low temperature) is January (20.1°F).
Average pressure
Petroleum, IN
- Average pressure in January:
30.12"Hg - Average pressure in February:
30.09"Hg - Average pressure in March:
30.08"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:
30.03"Hg - Average pressure in October:
30.02"Hg - Average pressure in November:
30.12"Hg - Average pressure in December:
30.11"Hg
The months with the highest atmospheric pressure are January and November (30.12"Hg).
The month with the lowest atmospheric pressure is June (29.93"Hg).
Average wind speed
Petroleum, IN
- Average wind speed in January:
10.7mph - Average wind speed in February:
10.4mph - Average wind speed in March:
9.8mph - 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:
6.2mph - Average wind speed in August:
6mph - Average wind speed in September:
6.9mph - Average wind speed in October:
8.9mph - Average wind speed in November:
9.6mph - Average wind speed in December:
9.8mph
The windiest month (with the highest average wind speed) is January (10.7mph).
The calmest month (with the lowest average wind speed) is August (6mph).
Average humidity
Petroleum, IN
The months with the highest relative humidity are January, February and December (83%).
The month with the lowest relative humidity is October (74%).
Average rainfall
Petroleum, IN
- Average rainfall in January:
1.1" - Average rainfall in February:
0.98" - Average rainfall in March:
1.69" - Average rainfall in April:
1.81" - Average rainfall in May:
2.24" - Average rainfall in June:
1.93"
The wettest month (with the highest rainfall) is May (2.24").
The driest month (with the least rainfall) is February (0.98").
Average rainfall days
Petroleum, IN
- Average rainfall days in January:
6.3 days - Average rainfall days in February:
5.4 days - Average rainfall days in March:
11.2 days - Average rainfall days in April:
14.8 days - Average rainfall days in May:
17.5 days - Average rainfall days in June:
14 days
- Average rainfall days in July:
14.7 days - Average rainfall days in August:
13 days - Average rainfall days in September:
12.4 days - Average rainfall days in October:
11.3 days - Average rainfall days in November:
8.5 days - Average rainfall days in December:
8.1 days
The month with the highest number of rainy days is May (17.5 days).
The month with the least rainy days is February (5.4 days).
Average snowfall
Petroleum, IN
The month with the highest snowfall is February (2.2").
The months with the least snowfall are May, June, July, August and September (0").
Average snowfall days
Petroleum, IN
- Average snowfall days in January:
9.6 days - Average snowfall days in February:
8.8 days - Average snowfall days in March:
4.4 days - Average snowfall days in April:
1.2 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:
0.5 days - Average snowfall days in November:
2.9 days - Average snowfall days in December:
8.1 days
The month with the highest number of snowfall days is January (9.6 days).
The months with the least snowfall days are June, July, August and September (0 days).
Average daylight / Average sunshine
Petroleum, 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 42min - Average daylight in August:
13h and 42min - Average daylight in September:
12h and 24min - 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 30min - Average sunshine in February:
4h and 36min - Average sunshine in March:
5h and 54min - Average sunshine in April:
7h and 0min - Average sunshine in May:
8h and 30min - Average sunshine in June:
9h and 54min
- Average sunshine in July:
10h and 0min - Average sunshine in August:
9h and 30min - Average sunshine in September:
7h and 54min - Average sunshine in October:
6h and 18min - Average sunshine in November:
5h and 6min - Average sunshine in December:
3h and 54min
The month with the most sunshine is July (Average sunshine: 10h and 0min).
The month with the least sunshine is January (Average sunshine: 3h and 30min).
Average sunshine days
Petroleum, IN
- Average sunshine days in January:
18 days - Average sunshine days in February:
14.9 days - Average sunshine days in March:
15.8 days - Average sunshine days in April:
13.4 days - Average sunshine days in May:
11.3 days - Average sunshine days in June:
12.3 days
- Average sunshine days in July:
12.8 days - Average sunshine days in August:
14.3 days - Average sunshine days in September:
15.5 days - Average sunshine days in October:
17.8 days - Average sunshine days in November:
18.9 days - Average sunshine days in December:
16.4 days
The month with the most sunshine days is November (18.9 days).
The month with the least sunshine days is May (11.3 days).
Average UV index
Petroleum, IN
The months with the highest UV index are June, July and August (UV index 6).
The month with the lowest UV index is December (UV index 1).
Average cloud cover
Petroleum, IN
The month with the most cloud cover is January (Cloud cover 64).
The months with the least cloud cover are July and August (Cloud cover 33).
Average visibility
Petroleum, IN
The months with the highest visibility are January, February, March, April, May, June, July, October, November and December (6mi).
The months with the lowest visibility are August and September (5mi).





