Climate and monthly weather forecastPortland, KY
Climate and monthly weather forecast
Weather in January
January, the same as December, is a wintry winter month in Portland, Kentucky, with an average temperature fluctuating between 37.4°F (3°C) and 24.4°F (-4.2°C). January is the coldest month of the year, registering average temperatures as high as 37.4°F (3°C) and as low as 24.4°F (-4.2°C). Weather in January »Weather in February
February, the last month of the winter in Portland, is another cold month, with an average temperature ranging between max 42.3°F (5.7°C) and min 27.5°F (-2.5°C). The beginning of February records an average high-temperature of a still icy 42.3°F (5.7°C), almost echoing the conditions of the previous month. Weather in February »Weather in March
March, the first month of the spring in Portland, is a fresh month, with an average temperature varying between 35.8°F (2.1°C) and 52.3°F (11.3°C). Portland in March shows a temperature shift, moving from an average high of an icy 42.3°F (5.7°C) in February to a cool 52.3°F (11.3°C). Weather in March »Weather in April
April is an enjoyable spring month in Portland, Kentucky, with temperature in the range of an average low of 45.5°F (7.5°C) and an average high of 64.6°F (18.1°C). April brings a rise in the average high-temperature, transitioning from March's fresh 52.3°F (11.3°C) to a refreshing 64.6°F (18.1°C). Weather in April »Weather in May
The last month of the spring, May, is a warm month in Portland, Kentucky, with temperature in the range of an average low of 55.4°F (13°C) and an average high of 74.8°F (23.8°C). The rise of average high-temperatures is seen in May, with an increase from a refreshing 64.6°F (18.1°C) in April to a moderately hot 74.8°F (23.8°C). Weather in May »Weather in June
The first month of the summer, June, is still a warm month in Portland, Kentucky, with an average temperature varying between 82.2°F (27.9°C) and 62.4°F (16.9°C). June's arrival signals a subtle increase in average high-temperatures, moving from May's 74.8°F (23.8°C) to a still warm 82.2°F (27.9°C). Weather in June »Weather in July
July, like June, in Portland, Kentucky, is a moderately hot summer month, with temperature in the range of an average high of 85.3°F (29.6°C) and an average low of 65.8°F (18.8°C). July, recording an average high temperature of 85.3°F (29.6°C) and a low temperature of 65.8°F (18.8°C), is Portland's warmest month. Throughout July, the heat index is appraised at a sweltering 96.8°F (36°C). Weather in July »Weather in August
The last month of the summer, August, is another warm month in Portland, Kentucky, with temperature in the range of an average low of 64°F (17.8°C) and an average high of 84.4°F (29.1°C). The arrival of August sees an average high-temperature of a still warm 84.4°F (29.1°C), hardly diverging from July's 85.3°F (29.6°C). Weather in August »Weather in September
September, the first month of the autumn in Portland, is also a moderately hot month, with an average temperature varying between 78.3°F (25.7°C) and 58.5°F (14.7°C). September implies a soft temperature shift, with average high-temperatures reducing from August's warm 84.4°F (29.1°C) to a still moderately hot 78.3°F (25.7°C). Weather in September »Weather in October
October, the same as September, is another comfortable autumn month in Portland, Kentucky, with temperature in the range of an average low of 47.3°F (8.5°C) and an average high of 65.3°F (18.5°C). The shift to October brings a decrease in the average high-temperature, falling from a warm 78.3°F (25.7°C) in September to a comfortable 65.3°F (18.5°C). Weather in October »Weather in November
The last month of the autumn, November, is also a fresh month in Portland, Kentucky, with an average temperature varying between 52.2°F (11.2°C) and 36.5°F (2.5°C). November shows a mild decline in the average high-temperature, falling from October's comfortable 65.3°F (18.5°C) to a cool 52.2°F (11.2°C). Weather in November »Weather in December
December, the first month of the winter in Portland, is also a wintry month, with an average temperature ranging between max 42.6°F (5.9°C) and min 31.3°F (-0.4°C). In December, the average high-temperature goes from a fresh 52.2°F (11.2°C) in November to a wintry 42.6°F (5.9°C). Weather in December »Updated: Jul 10, 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 coldest month, with the temperature often reaching an average high of 37.4°F (3°C) and an average low of 24.4°F (-4.2°C).
Throughout the year, there are 156.2 rainfall days, and 26.1" (663mm) of precipitation is accumulated.
January through April, November and December are months with snowfall.
The month with the most snowfall is January, when snow falls for 8.4 days and typically aggregates up to 1.89" (48mm) of snow.
In Portland, during the entire year, snow falls for 32.5 days and aggregates up to 7.4" (188mm) of snow.
January has the least sunshine of the year, with an average of 4.1h of sunshine.
The months with the lowest UV index are January, February, November and December, with an average maximum UV index of 2.
February and December, with an average relative humidity of 81%, are most humid months.
On Sunday, March 10. 2024, at 2:00 am, Daylight Saving Time starts, 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.
The month with the most rainfall is May, when the rain falls for 17.1 days and typically aggregates up to 3.03" (77mm) of precipitation.
In Portland, snow does not fall in May through October.
The month with the longest days is June, with an average of 14h and 48min of daylight.
The months with the highest UV index are June through August, with an average maximum UV index of 6.
With average temperatures fluctuating between a high of 85.3°F (29.6°C) and a low of 65.8°F (18.8°C), July stands out as the warmest month in Portland.
The least humid month is August, with an average relative humidity of 74%.
August has the most sunshine of the year, with an average of 10.2h of sunshine.
The month with the least rainfall is September, when the rain falls for 13.3 days and typically collects 1.61" (41mm) of precipitation.
With an average of 9h and 30min of daylight, December has the shortest days of the year.
Average temperature
Portland, KY
The warmest month (with the highest average high temperature) is July (85.3°F).
The month with the lowest average high temperature is January (37.4°F).
The month with the highest average low temperature is July (65.8°F).
The coldest month (with the lowest average low temperature) is January (24.4°F).
Average pressure
Portland, KY
- Average pressure in January:
30.15"Hg - Average pressure in February:
30.11"Hg - Average pressure in March:
30.09"Hg - Average pressure in April:
29.97"Hg - Average pressure in May:
29.98"Hg - Average pressure in June:
29.95"Hg
- Average pressure in July:
29.98"Hg - Average pressure in August:
29.99"Hg - Average pressure in September:
30.03"Hg - Average pressure in October:
30.04"Hg - Average pressure in November:
30.15"Hg - Average pressure in December:
30.13"Hg
The months with the highest atmospheric pressure are January and November (30.15"Hg).
The month with the lowest atmospheric pressure is June (29.95"Hg).
Average wind speed
Portland, KY
- Average wind speed in January:
8.6mph - Average wind speed in February:
8.4mph - Average wind speed in March:
8mph - Average wind speed in April:
8.1mph - Average wind speed in May:
6.6mph - Average wind speed in June:
5.9mph
- Average wind speed in July:
5mph - Average wind speed in August:
5mph - Average wind speed in September:
5.6mph - Average wind speed in October:
6.8mph - Average wind speed in November:
7.3mph - Average wind speed in December:
7.9mph
The windiest month (with the highest average wind speed) is January (8.6mph).
The calmest months (with the lowest average wind speed) are July and August (5mph).
Average humidity
Portland, KY
The months with the highest relative humidity are February and December (81%).
The month with the lowest relative humidity is August (74%).
Average rainfall
Portland, KY
- Average rainfall in January:
1.69" - Average rainfall in February:
2.24" - Average rainfall in March:
2.44" - Average rainfall in April:
2.64" - Average rainfall in May:
3.03" - Average rainfall in June:
2.09"
- Average rainfall in July:
2.36" - Average rainfall in August:
2.01" - Average rainfall in September:
1.61" - Average rainfall in October:
1.85" - Average rainfall in November:
2.01" - Average rainfall in December:
2.13"
The wettest month (with the highest rainfall) is May (3.03").
The driest month (with the least rainfall) is September (1.61").
Average rainfall days
Portland, KY
- Average rainfall days in January:
9.9 days - Average rainfall days in February:
10.9 days - Average rainfall days in March:
13.3 days - Average rainfall days in April:
14.7 days - Average rainfall days in May:
17.1 days - Average rainfall days in June:
13.9 days
- Average rainfall days in July:
16.5 days - Average rainfall days in August:
14.3 days - Average rainfall days in September:
13.3 days - Average rainfall days in October:
11.1 days - Average rainfall days in November:
9.8 days - Average rainfall days in December:
11.4 days
The month with the highest number of rainy days is May (17.1 days).
The month with the least rainy days is November (9.8 days).
Average snowfall
Portland, KY
The month with the highest snowfall is January (1.89").
The months with the least snowfall are May, June, July, August, September and October (0").
Average snowfall days
Portland, KY
- Average snowfall days in January:
8.4 days - Average snowfall days in February:
7.9 days - Average snowfall days in March:
4.8 days - Average snowfall days in April:
0.7 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:
2.8 days - Average snowfall days in December:
7.7 days
The month with the highest number of snowfall days is January (8.4 days).
The months with the least snowfall days are May, June, July, August and September (0 days).
Average daylight / Average sunshine
Portland, KY
- Average daylight in January:
9h and 48min - Average daylight in February:
10h and 48min - Average daylight in March:
12h and 0min - Average daylight in April:
13h and 12min - Average daylight in May:
14h and 18min - Average daylight in June:
14h and 48min
- Average daylight in July:
14h and 36min - Average daylight in August:
13h and 36min - Average daylight in September:
12h and 24min - Average daylight in October:
11h and 12min - Average daylight in November:
10h and 6min - Average daylight in December:
9h and 30min
The month with the longest days is June (Average daylight: 14h and 48min).
The month with the shortest days is December (Average daylight: 9h and 30min).
- Average sunshine in January:
4h and 6min - Average sunshine in February:
5h and 18min - Average sunshine in March:
5h and 54min - Average sunshine in April:
7h and 42min - Average sunshine in May:
9h and 0min - Average sunshine in June:
10h and 6min
- Average sunshine in July:
10h and 6min - Average sunshine in August:
10h and 12min - Average sunshine in September:
8h and 18min - Average sunshine in October:
6h and 36min - Average sunshine in November:
5h and 36min - Average sunshine in December:
4h and 12min
The month with the most sunshine is August (Average sunshine: 10h and 12min).
The month with the least sunshine is January (Average sunshine: 4h and 6min).
Average sunshine days
Portland, KY
- Average sunshine days in January:
14.7 days - Average sunshine days in February:
11.8 days - Average sunshine days in March:
13.3 days - Average sunshine days in April:
13.5 days - Average sunshine days in May:
10.8 days - Average sunshine days in June:
12.6 days
- Average sunshine days in July:
11.3 days - Average sunshine days in August:
13.9 days - Average sunshine days in September:
15.1 days - Average sunshine days in October:
18.1 days - Average sunshine days in November:
17.9 days - Average sunshine days in December:
13.2 days
The month with the most sunshine days is October (18.1 days).
The month with the least sunshine days is May (10.8 days).
Average UV index
Portland, KY
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
Portland, KY
The month with the most cloud cover is January (Cloud cover 59).
The month with the least cloud cover is August (Cloud cover 28).
Average visibility
Portland, KY
The months with the highest visibility are January, March, April, June, August, September, October, November and December (6mi).
The months with the lowest visibility are February, May and July (5mi).
