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Contents
- Weather in January
- Weather in February
- Weather in March
- Weather in April
- Weather in May
- Weather in June
- Weather in July
- Weather in August
- Weather in September
- Weather in October
- Weather in November
- Weather in December
- Frequently asked questions
- Average temperature
- Average pressure
- Average wind speed
- Average humidity
- Average rainfall
- Average rainfall days
- Average snowfall
- Average snowfall days
- Average daylight
- Average sunshine
- Average sunshine days
- Average UV index
- Average cloud cover
- Average visibility
Weather in January
January, the same as December, in River, Indiana, is another subzero cold winter month, with temperature in the range of an average low of 19.2°F (-7.1°C) and an average high of 30.7°F (-0.7°C). River's January weather, with an average high temperature of 30.7°F (-0.7°C) and an average low temperature of 19.2°F (-7.1°C), tends to be the coldest of the year. Weather in January »
Weather in February
February, the last month of the winter in River, is a wintry month, with an average temperature varying between 35.1°F (1.7°C) and 22.5°F (-5.3°C). The average high-temperature for February is a cold 35.1°F (1.7°C), closely aligning with the temperature of the preceding month. Weather in February »
Weather in March
The first month of the spring, March, is a frosty month in River, Indiana, with temperature in the range of an average low of 32°F (0°C) and an average high of 46.9°F (8.3°C). River's transition into March sees a rise in the average high-temperature, advancing from a cold 35.1°F (1.7°C) in February to a chilly 46.9°F (8.3°C). Weather in March »
Weather in April
April is a moderate spring month in River, Indiana, with temperature in the range of an average high of 58.6°F (14.8°C) and an average low of 42.1°F (5.6°C). April's onset brings a temperature rise, moving from a chilly 46.9°F (8.3°C) in March to a refreshing 58.6°F (14.8°C). Weather in April »
Weather in May
May, the last month of the spring in River, is an agreeable month, with an average temperature fluctuating between 53.2°F (11.8°C) and 70.5°F (21.4°C). As April transitions into May, River sees a rise in the average high-temperature, moving from a moderate 58.6°F (14.8°C) to a pleasant 70.5°F (21.4°C). Weather in May »
Weather in June
June, the first month of the summer in River, is a warm month, with an average temperature varying between 61.3°F (16.3°C) and 78.1°F (25.6°C). As June begins, there's a slight increase in the average high-temperature, moving from a pleasant 70.5°F (21.4°C) in May to a moderately hot 78.1°F (25.6°C). Weather in June »
Weather in July
July, the same as June, is a moderately hot summer month in River, Indiana, with an average temperature ranging between max 80.8°F (27.1°C) and min 64°F (17.8°C). River's warmest month, July, generally records average temperatures ranging from a high of 80.8°F (27.1°C) to a low of 64°F (17.8°C). The heat index for July is calculated to be a tropical 86°F (30°C). Weather in July »
Weather in August
The last month of the summer, August, is also a moderately hot month in River, Indiana, with an average temperature fluctuating between 61.5°F (16.4°C) and 79.3°F (26.3°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 River, is also a moderately hot month, with an average temperature fluctuating between 55.6°F (13.1°C) and 73.9°F (23.3°C). September's arrival signals a moderate reduction in the average high-temperature, easing from 79.3°F (26.3°C) in August to a still moderately hot 73.9°F (23.3°C). Weather in September »
Weather in October
October, like September, in River, Indiana, is another refreshing autumn month, with temperature in the range of an average high of 61.5°F (16.4°C) and an average low of 45.5°F (7.5°C). The shift to October brings a decrease in the average high-temperature, falling from a warm 73.9°F (23.3°C) in September to a comfortable 61.5°F (16.4°C). Weather in October »
Weather in November
The last month of the autumn, November, is also a frosty month in River, Indiana, with temperature in the range of an average high of 47.3°F (8.5°C) and an average low of 34.3°F (1.3°C). River's progression into November includes a drop in the average high-temperature, from a comfortable 61.5°F (16.4°C) in October to a chilly 47.3°F (8.5°C). Weather in November »
Weather in December
The first month of the winter, December, is also an icy month in River, Indiana, with an average temperature varying between 26.6°F (-3°C) and 36.5°F (2.5°C). December's onset brings a reduction in the average high-temperature, from a frosty 47.3°F (8.5°C) in November to a wintry 36.5°F (2.5°C). Weather in December »
Updated: Feb 12, 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
What part of the year is the coldest in River?
The coldest temperatures in River, Indiana, occur during January, when averages reach a peak of 30.7°F (-0.7°C) and a low of 19.2°F (-7.1°C).
What is the most humid month in River?
The most humid month in River is January, with an average relative humidity of 84%.
How much does it rain in River?
Throughout the year, in River, Indiana, there are 153.8 rainfall days, and 25" (635mm) of precipitation is accumulated.
When does it snow in River?
Months with snowfall are January through April, October through December.
How many days does it snow in River?
Throughout the year, in River, there are 47.8 snowfall days, and 11.93" (303mm) of snow is accumulated.
What is the month with the least sunshine in River?
With an average of 3.3h of sunshine, January has the least sunshine of the year in River.
When is the lowest UV index in River?
January through March, October through December, with an average maximum UV index of 2, are months with the lowest UV index in River, Indiana.
What is the driest month in River?
February is the month with the least rainfall in River, Indiana. Rain falls for 7.3 days and accumulates 1.42" (36mm) of precipitation.
When does it snow the most in River?
The month with the most snowfall in River, Indiana, is February, when snow falls for 11.6 days and typically aggregates up to 3.27" (83mm) of snow.
When is Daylight Saving Time (DST) in River?
On Sunday, March 10. 2024, at 2:00 am, Daylight Saving Time starts in River, Indiana, 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.
What is the rainiest month in River?
The month with the most rainfall in River, Indiana, is April, when the rain falls for 15.7 days and typically aggregates up to 3.07" (78mm) of precipitation.
When it does not snow in River?
In River, Indiana, snow does not fall in May through September.
When are the longest days in River?
The month with the longest days in River, Indiana, is June, with an average of 15h and 0min of daylight.
What is the month with the highest UV index in River?
June is the month with the highest UV index, with an average maximum UV index of 6.
What month is the hottest in River?
Temperature readings in River reach their annual highs in July, averaging 80.8°F (27.1°C) and a minimum average of 64°F (17.8°C).
What month has the most sunshine in River?
The month with the most sunshine is July, with an average of 10h of sunshine.
What is the least humid month in River?
With an average relative humidity of 75%, October is the least humid month in River.
What is the month with the shortest days in River?
The month with the shortest days is December, with an average of 9h and 18min of daylight.
Average temperature
River, IN
The warmest month (with the highest average high temperature) is July (80.8°F).
The month with the lowest average high temperature is January (30.7°F).
The month with the highest average low temperature is July (64°F).
The coldest month (with the lowest average low temperature) is January (19.2°F).
Average pressure
River, IN
- Average pressure in January:
30.11"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:
30.11"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
River, IN
- Average wind speed in January:
10.4mph - Average wind speed in February:
10.1mph - Average wind speed in March:
9.7mph - 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:
6.2mph - Average wind speed in September:
7mph - Average wind speed in October:
8.8mph - Average wind speed in November:
9.4mph - Average wind speed in December:
9.6mph
The windiest month (with the highest average wind speed) is January (10.4mph).
The calmest months (with the lowest average wind speed) are July and August (6.2mph).
Average humidity
River, IN
The month with the highest relative humidity is January (84%).
The month with the lowest relative humidity is October (75%).
Average rainfall
River, IN
- Average rainfall in January:
1.61" - Average rainfall in February:
1.42" - Average rainfall in March:
2.24" - Average rainfall in April:
3.07" - Average rainfall in May:
2.99" - Average rainfall in June:
2.72"
- Average rainfall in July:
2.56" - Average rainfall in August:
2.09" - Average rainfall in September:
1.57" - Average rainfall in October:
1.57" - Average rainfall in November:
1.57" - Average rainfall in December:
1.57"
The wettest month (with the highest rainfall) is April (3.07").
The driest month (with the least rainfall) is February (1.42").
Average rainfall days
River, IN
- Average rainfall days in January:
6.8 days - Average rainfall days in February:
7.3 days - Average rainfall days in March:
12.2 days - Average rainfall days in April:
15.7 days - Average rainfall days in May:
18.3 days - Average rainfall days in June:
17.3 days
- Average rainfall days in July:
16.5 days - Average rainfall days in August:
15.2 days - Average rainfall days in September:
13.5 days - Average rainfall days in October:
12.2 days - Average rainfall days in November:
10.3 days - Average rainfall days in December:
8.5 days
The month with the highest number of rainy days is May (18.3 days).
The month with the least rainy days is January (6.8 days).
Average snowfall
River, IN
The month with the highest snowfall is February (3.27").
The months with the least snowfall are May, June, July, August and September (0").
Average snowfall days
River, IN
- Average snowfall days in January:
13.4 days - Average snowfall days in February:
11.6 days - Average snowfall days in March:
5.9 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:
0.5 days - Average snowfall days in November:
4.5 days - Average snowfall days in December:
10.1 days
The month with the highest number of snowfall days is January (13.4 days).
The months with the least snowfall days are June, July, August and September (0 days).
Average daylight / Average sunshine
River, IN
- Average daylight in January:
9h and 4min - Average daylight in February:
10h and 4min - Average daylight in March:
12h and 0min - Average daylight in April:
13h and 2min - Average daylight in May:
14h and 3min - Average daylight in June:
15h and 0min
- Average daylight in July:
14h and 5min - Average daylight in August:
13h and 4min - Average daylight in September:
12h and 3min - Average daylight in October:
11h and 1min - Average daylight in November:
9h and 5min - Average daylight in December:
9h and 2min
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 2min - Average sunshine in February:
4h and 2min - Average sunshine in March:
5h and 4min - Average sunshine in April:
6h and 5min - Average sunshine in May:
8h and 2min - Average sunshine in June:
9h and 5min
- Average sunshine in July:
10h and 0min - Average sunshine in August:
9h and 2min - Average sunshine in September:
8h and 0min - Average sunshine in October:
6h and 1min - Average sunshine in November:
5h and 0min - Average sunshine in December:
3h and 5min
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 18min).
Average sunshine days
River, IN
- Average sunshine days in January:
11.9 days - Average sunshine days in February:
10.5 days - Average sunshine days in March:
13.4 days - Average sunshine days in April:
11.7 days - Average sunshine days in May:
10.5 days - Average sunshine days in June:
10.8 days
- Average sunshine days in July:
11.7 days - Average sunshine days in August:
11.9 days - Average sunshine days in September:
14.5 days - Average sunshine days in October:
16 days - Average sunshine days in November:
15.9 days - Average sunshine days in December:
13.7 days
The month with the most sunshine days is October (16 days).
The months with the least sunshine days are February and May (10.5 days).
Average UV index
River, IN
The month with the highest UV index is June (UV index 6).
The months with the lowest UV index are January, February, March, October, November and December (UV index 2).
Average cloud cover
River, IN
The month with the most cloud cover is January (Cloud cover 65).
The month with the least cloud cover is August (Cloud cover 33).
Average visibility
River, 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).
River, Indiana, USA
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