Climate and monthly weather forecastMonmouth, IN
Climate and monthly weather forecast
Weather in January
January, like December, is another subzero cold winter month in Monmouth, Indiana, with an average temperature varying between 31.3°F (-0.4°C) and 19.8°F (-6.8°C). January, marked by an average high-temperature of 31.3°F (-0.4°C) and a low-temperature of 19.8°F (-6.8°C), is the coldest month. Weather in January »Weather in February
The last month of the winter, February, is a wintry month in Monmouth, Indiana, with temperature in the range of an average low of 23.4°F (-4.8°C) and an average high of 35.2°F (1.8°C). The transition into February shows a subtle variation to an icy 35.2°F (1.8°C) from January's 31.3°F (-0.4°C) in the average high-temperature. Weather in February »Weather in March
March, the first month of the spring in Monmouth, is a chilly month, with an average temperature varying between 32.4°F (0.2°C) and 46.9°F (8.3°C). As Monmouth enters March, the average high-temperature increases from the a cold 35.2°F (1.8°C) of February to a frosty 46.9°F (8.3°C). Weather in March »Weather in April
April is a moderate spring month in Monmouth, Indiana, with an average temperature fluctuating between 59°F (15°C) and 42.1°F (5.6°C). A shift in the average high-temperature is noticeable in April, changing from a chilly 46.9°F (8.3°C) in March to a mild 59°F (15°C). Weather in April »Weather in May
May, the last month of the spring in Monmouth, is an agreeable month, with temperature in the range of an average low of 54°F (12.2°C) and an average high of 70.7°F (21.5°C). The onset of May brings a temperature shift, with the average high-temperature moving from a mild 59°F (15°C) in April to a pleasant 70.7°F (21.5°C). Weather in May »Weather in June
June, the first month of the summer in Monmouth, is a warm month, with an average temperature varying between 61.3°F (16.3°C) and 78.1°F (25.6°C). June brings a slight increase in the average high-temperature, progressing from an agreeable 70.7°F (21.5°C) in May to a warm 78.1°F (25.6°C). Weather in June »Weather in July
July, the same as June, is another warm summer month in Monmouth, Indiana, with an average temperature fluctuating between 64°F (17.8°C) and 81.1°F (27.3°C). In Monmouth, the highest average temperatures are observed in July, with a high of 81.1°F (27.3°C) and a low of 64°F (17.8°C). The average heat index in July is computed to be a hot 87.8°F (31°C). Weather in July »Weather in August
August, the last month of the summer in Monmouth, is also a moderately hot month, with temperature in the range of an average high of 79.2°F (26.2°C) and an average low of 61.7°F (16.5°C). The introduction of August sees an average high-temperature of a still warm 79.2°F (26.2°C), hardly deviating from July. Weather in August »Weather in September
September, the first month of the autumn in Monmouth, is still a warm month, with an average temperature varying between 55.8°F (13.2°C) and 73.8°F (23.2°C). The arrival of September signals a subtle shift in temperature, down from a moderately hot 79.2°F (26.2°C) in August to a still warm 73.8°F (23.2°C). Weather in September »Weather in October
October, like September, in Monmouth, Indiana, is another comfortable autumn month, with an average temperature varying between 61.7°F (16.5°C) and 45.9°F (7.7°C). Monmouth experiences a temperature shift at the start of October, with average high-temperatures adjusting from a warm 73.8°F (23.2°C) in September to a refreshing 61.7°F (16.5°C). Weather in October »Weather in November
The last month of the autumn, November, is another chilly month in Monmouth, Indiana, with temperature in the range of an average high of 47.5°F (8.6°C) and an average low of 35.1°F (1.7°C). Start of November brings a shift in the average high-temperature, falling from October's comfortable 61.7°F (16.5°C) to a frosty 47.5°F (8.6°C). Weather in November »Weather in December
The first month of the winter, December, is still a cold month in Monmouth, Indiana, with temperature in the range of an average low of 27.1°F (-2.7°C) and an average high of 36.7°F (2.6°C). The start of December involves a temperature drop, moving from a chilly 47.5°F (8.6°C) in November to a wintry 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
Monmouth, 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 (31.3°F).
The month with the highest average low temperature is July (64°F).
The coldest month (with the lowest average low temperature) is January (19.8°F).
Average pressure
Monmouth, 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:
30.12"Hg - Average pressure in December:
30.1"Hg
The month with the highest atmospheric pressure is November (30.12"Hg).
The month with the lowest atmospheric pressure is June (29.93"Hg).
Average wind speed
Monmouth, IN
- Average wind speed in January:
10.6mph - Average wind speed in February:
10.3mph - Average wind speed in March:
9.7mph - Average wind speed in April:
10mph - Average wind speed in May:
8.3mph - 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:
6.8mph - 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 (10.6mph).
The calmest month (with the lowest average wind speed) is August (6mph).
Average humidity
Monmouth, IN
The months with the highest relative humidity are January and February (83%).
The month with the lowest relative humidity is October (74%).
Average rainfall
Monmouth, IN
- Average rainfall in January:
1.54" - Average rainfall in February:
1.34" - Average rainfall in March:
2.09" - Average rainfall in April:
2.68" - Average rainfall in May:
3.03" - Average rainfall in June:
2.52"
- Average rainfall in July:
2.28" - Average rainfall in August:
2.01" - Average rainfall in September:
1.57" - Average rainfall in October:
1.57" - Average rainfall in November:
1.5" - Average rainfall in December:
1.61"
The wettest month (with the highest rainfall) is May (3.03").
The driest month (with the least rainfall) is February (1.34").
Average rainfall days
Monmouth, IN
- Average rainfall days in January:
8.3 days - Average rainfall days in February:
7.5 days - Average rainfall days in March:
12.7 days - Average rainfall days in April:
16.8 days - Average rainfall days in May:
18.3 days - Average rainfall days in June:
17.2 days
- Average rainfall days in July:
16.1 days - Average rainfall days in August:
15.1 days - Average rainfall days in September:
13.5 days - Average rainfall days in October:
12.6 days - Average rainfall days in November:
10.2 days - Average rainfall days in December:
11.1 days
The month with the highest number of rainy days is May (18.3 days).
The month with the least rainy days is February (7.5 days).
Average snowfall
Monmouth, IN
The month with the highest snowfall is February (2.83").
The months with the least snowfall are May, June, July, August and September (0").
Average snowfall days
Monmouth, IN
- Average snowfall days in January:
13.5 days - Average snowfall days in February:
12 days - Average snowfall days in March:
6.3 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:
0.3 days - Average snowfall days in November:
4.4 days - Average snowfall days in December:
10 days
The month with the highest number of snowfall days is January (13.5 days).
The months with the least snowfall days are June, July, August and September (0 days).
Average daylight / Average sunshine
Monmouth, 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 30min - Average sunshine in February:
4h and 30min - Average sunshine in March:
5h and 54min - Average sunshine in April:
6h and 54min - Average sunshine in May:
8h and 36min - Average sunshine in June:
10h and 0min
- Average sunshine in July:
10h and 18min - Average sunshine in August:
9h and 36min - Average sunshine in September:
8h and 0min - Average sunshine in October:
6h and 12min - Average sunshine in November:
5h and 12min - Average sunshine in December:
3h and 54min
The month with the most sunshine is July (Average sunshine: 10h and 18min).
The month with the least sunshine is January (Average sunshine: 3h and 30min).
Average sunshine days
Monmouth, IN
- Average sunshine days in January:
12.1 days - Average sunshine days in February:
10.2 days - Average sunshine days in March:
13 days - Average sunshine days in April:
10.8 days - Average sunshine days in May:
10.2 days - Average sunshine days in June:
10 days
- Average sunshine days in July:
11.9 days - Average sunshine days in August:
12.3 days - Average sunshine days in September:
14.5 days - Average sunshine days in October:
15.6 days - Average sunshine days in November:
16.3 days - Average sunshine days in December:
13 days
The month with the most sunshine days is November (16.3 days).
The month with the least sunshine days is June (10 days).
Average UV index
Monmouth, 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
Monmouth, 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 32).
Average visibility
Monmouth, 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).





