Climate and monthly weather forecastPalmyra, IL
Climate and monthly weather forecast
Weather in January
January, like December, in Palmyra, Illinois, is an icy winter month, with an average temperature ranging between max 34.2°F (1.2°C) and min 22.3°F (-5.4°C). Palmyra's January weather, marked by an average high temperature of 34.2°F (1.2°C) and an average low temperature of 22.3°F (-5.4°C), is the coldest in the year. Weather in January »Weather in February
The last month of the winter, February, is also an icy month in Palmyra, Illinois, with an average temperature ranging between max 39.4°F (4.1°C) and min 25.3°F (-3.7°C). Palmyra starts February with an average high-temperature of a still cold 39.4°F (4.1°C), hinting at a minimal fluctuation from January. Weather in February »Weather in March
The first month of the spring, March, is a cool month in Palmyra, Illinois, with an average temperature varying between 52°F (11.1°C) and 36.1°F (2.3°C). As March arrives, a rise in the average high-temperature is observed, moving from a wintry 39.4°F (4.1°C) in February to a cool 52°F (11.1°C). Weather in March »Weather in April
April in Palmyra, Illinois, is a refreshing spring month, with an average temperature varying between 46.4°F (8°C) and 63.5°F (17.5°C). April brings a rise in the average high-temperature, transitioning from March's cool 52°F (11.1°C) to a comfortable 63.5°F (17.5°C). Weather in April »Weather in May
May, the last month of the spring in Palmyra, is a pleasant month, with an average temperature fluctuating between 56.8°F (13.8°C) and 73.2°F (22.9°C). With the arrival of May, the average high-temperature transitions from an enjoyable 63.5°F (17.5°C) in April to an agreeable 73.2°F (22.9°C). Weather in May »Weather in June
June, the first month of the summer in Palmyra, is a moderately hot month, with an average temperature ranging between max 81.7°F (27.6°C) and min 64.9°F (18.3°C). With the onset of June, Palmyra's weather sees a minor temperature rise, transitioning from an agreeable 73.2°F (22.9°C) in May to a warm 81.7°F (27.6°C). Weather in June »Weather in July
July, like June, in Palmyra, Illinois, is another warm summer month, with an average temperature fluctuating between 83.3°F (28.5°C) and 66.7°F (19.3°C). Palmyra's warmest month, July, registers temperatures that range from a high of 83.3°F (28.5°C) to a low of 66.7°F (19.3°C). July's heat index is estimated at a hot 93.2°F (34°C). Weather in July »Weather in August
August, the last month of the summer in Palmyra, is another warm month, with an average temperature fluctuating between 64.9°F (18.3°C) and 82.2°F (27.9°C). August's weather records an average high-temperature of a still warm 82.2°F (27.9°C), showing little deviation from July. Weather in August »Weather in September
September, the first month of the autumn in Palmyra, is still a warm month, with an average temperature fluctuating between 59.4°F (15.2°C) and 77.7°F (25.4°C). Palmyra's shift into September sets the average high-temperature at a still moderately hot 77.7°F (25.4°C), a figure that deviates only slightly from August's 82.2°F (27.9°C). Weather in September »Weather in October
October, like September, in Palmyra, Illinois, is another refreshing autumn month, with temperature in the range of an average low of 48.2°F (9°C) and an average high of 64.4°F (18°C). With October's onset, the weather shows a temperature decrease, transitioning from a moderately hot 77.7°F (25.4°C) in September to an enjoyable 64.4°F (18°C). Weather in October »Weather in November
The last month of the autumn, November, is also a fresh month in Palmyra, Illinois, with an average temperature varying between 36.5°F (2.5°C) and 50.9°F (10.5°C). November suggests a modest reduction in the average high-temperature, shifting from an enjoyable 64.4°F (18°C) in October to a cool 50.9°F (10.5°C). Weather in November »Weather in December
December, the first month of the winter in Palmyra, is also a wintry month, with an average temperature varying between 28.6°F (-1.9°C) and 39.7°F (4.3°C). December suggests a modest reduction in the average high-temperature, shifting from a cool 50.9°F (10.5°C) in November to a wintry 39.7°F (4.3°C). Weather in December »Updated: Jul 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
January is the month when Palmyra sees the average lowest temperatures, with a high of 34.2°F (1.2°C) and a low of 22.3°F (-5.4°C).
In Palmyra, during the entire year, the rain falls for 151.5 days and collects up to 31.3" (795mm) of precipitation.
January through April, November and December are months with snowfall in Palmyra, Illinois.
Throughout the year, there are 25.5 snowfall days, and 9.09" (231mm) of snow is accumulated.
The month with the least sunshine is January, with an average of 4.4h of sunshine.
January, February, November and December, with an average maximum UV index of 2, are months with the lowest UV index.
The month with the most snowfall is February, when snow falls for 7 days and typically aggregates up to 3.19" (81mm) of snow.
On Sunday, March 10. 2024, at 2:00 am, Daylight Saving Time starts, and the time zone changes from CST to CDT. Daylight Saving Time ends Sunday, November 3. 2024, at 2:00 am, and the time zone reverts from CDT to CST.
In Palmyra, snow does not fall in May through October.
June is the month with the most rainfall in Palmyra. Rain falls for 16.3 days and accumulates 3.86" (98mm) of precipitation.
With an average of 14h and 54min of daylight, June has the longest days of the year.
June has the most sunshine of the year, with an average of 10.3h of sunshine.
June through August, with an average maximum UV index of 6, are months with the highest UV index.
July, characterized by an average high temperature of 83.3°F (28.5°C) and a low temperature of 66.7°F (19.3°C), is generally the warmest month.
The most humid month is July, with an average relative humidity of 82%.
The least humid month is October, with an average relative humidity of 71%.
December is the month with the least rainfall. Rain falls for 8.5 days and accumulates 1.73" (44mm) of precipitation.
With an average of 9h and 24min of daylight, December has the shortest days of the year.
Average temperature
Palmyra, IL
The warmest month (with the highest average high temperature) is July (83.3°F).
The month with the lowest average high temperature is January (34.2°F).
The month with the highest average low temperature is July (66.7°F).
The coldest month (with the lowest average low temperature) is January (22.3°F).
Average pressure
Palmyra, IL
- Average pressure in January:
30.15"Hg - Average pressure in February:
30.12"Hg - Average pressure in March:
30.07"Hg - Average pressure in April:
29.94"Hg - Average pressure in May:
29.95"Hg - Average pressure in June:
29.92"Hg
- Average pressure in July:
29.97"Hg - Average pressure in August:
29.97"Hg - Average pressure in September:
30.02"Hg - Average pressure in October:
30.03"Hg - Average pressure in November:
30.12"Hg - Average pressure in December:
30.13"Hg
The month with the highest atmospheric pressure is January (30.15"Hg).
The month with the lowest atmospheric pressure is June (29.92"Hg).
Average wind speed
Palmyra, IL
- Average wind speed in January:
10.3mph - Average wind speed in February:
10.1mph - Average wind speed in March:
9.9mph - Average wind speed in April:
9.9mph - Average wind speed in May:
8.1mph - Average wind speed in June:
7.1mph
- Average wind speed in July:
6mph - 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:
9.6mph - Average wind speed in December:
9.6mph
The windiest month (with the highest average wind speed) is January (10.3mph).
The calmest months (with the lowest average wind speed) are July and August (6mph).
Average humidity
Palmyra, IL
The month with the highest relative humidity is July (82%).
The month with the lowest relative humidity is October (71%).
Average rainfall
Palmyra, IL
- Average rainfall in January:
1.85" - Average rainfall in February:
1.81" - Average rainfall in March:
2.48" - Average rainfall in April:
3.58" - Average rainfall in May:
3.54" - Average rainfall in June:
3.86"
The wettest month (with the highest rainfall) is June (3.86").
The driest month (with the least rainfall) is December (1.73").
Average rainfall days
Palmyra, IL
- Average rainfall days in January:
7.4 days - Average rainfall days in February:
7.8 days - Average rainfall days in March:
13.7 days - Average rainfall days in April:
15.8 days - Average rainfall days in May:
17.8 days - Average rainfall days in June:
16.3 days
- Average rainfall days in July:
15.7 days - Average rainfall days in August:
13.8 days - Average rainfall days in September:
13.2 days - Average rainfall days in October:
11 days - Average rainfall days in November:
10.5 days - Average rainfall days in December:
8.5 days
The month with the highest number of rainy days is May (17.8 days).
The month with the least rainy days is January (7.4 days).
Average snowfall
Palmyra, IL
The month with the highest snowfall is February (3.19").
The months with the least snowfall are May, June, July, August, September and October (0").
Average snowfall days
Palmyra, IL
- Average snowfall days in January:
8.5 days - Average snowfall days in February:
7 days - Average snowfall days in March:
2.9 days - Average snowfall days in April:
0.4 days - Average snowfall days in May:
0 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:
0.2 days - Average snowfall days in November:
1.6 days - Average snowfall days in December:
4.9 days
The month with the highest number of snowfall days is January (8.5 days).
The months with the least snowfall days are May, June, July, August and September (0 days).
Average daylight / Average sunshine
Palmyra, IL
- Average daylight in January:
9h and 48min - 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 24min - Average daylight in June:
14h and 54min
- Average daylight in July:
14h and 36min - 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:
10h and 0min - Average daylight in December:
9h and 24min
The month with the longest days is June (Average daylight: 14h and 54min).
The month with the shortest days is December (Average daylight: 9h and 24min).
- Average sunshine in January:
4h and 24min - Average sunshine in February:
4h and 30min - Average sunshine in March:
6h and 24min - Average sunshine in April:
8h and 18min - Average sunshine in May:
9h and 12min - Average sunshine in June:
10h and 18min
- Average sunshine in July:
10h and 6min - Average sunshine in August:
9h and 54min - Average sunshine in September:
9h and 12min - Average sunshine in October:
6h and 6min - Average sunshine in November:
5h and 30min - Average sunshine in December:
4h and 48min
The month with the most sunshine is June (Average sunshine: 10h and 18min).
The month with the least sunshine is January (Average sunshine: 4h and 24min).
Average sunshine days
Palmyra, IL
- Average sunshine days in January:
15.8 days - Average sunshine days in February:
14.3 days - Average sunshine days in March:
13.9 days - Average sunshine days in April:
12.1 days - Average sunshine days in May:
10.6 days - Average sunshine days in June:
10.8 days
- Average sunshine days in July:
12.3 days - Average sunshine days in August:
14.9 days - Average sunshine days in September:
14.7 days - Average sunshine days in October:
18.5 days - Average sunshine days in November:
17.7 days - Average sunshine days in December:
17.9 days
The month with the most sunshine days is October (18.5 days).
The month with the least sunshine days is May (10.6 days).
Average UV index
Palmyra, IL
The months with the highest UV index are June, July and August (UV index 6).
The months with the lowest UV index are January, February, November and December (UV index 2).
Average cloud cover
Palmyra, IL
The month with the most cloud cover is January (Cloud cover 53).
The months with the least cloud cover are June, July, August and September (Cloud cover 30).
Average visibility
Palmyra, IL
The months with the highest visibility are January, February, March, April, May, June, September, October, November and December (6mi).
The months with the lowest visibility are July and August (5mi).
