Climate and monthly weather forecastGretna, NE
Climate and monthly weather forecast
The climate of Gretna
Gretna, Nebraska, is found within the Humid Continental climate zone according to the Köppen climate classification, denoted as Dfa. This zone is characterized by no dry season and hot summers. Spanning all four seasons, Gretna experiences a broad range of weather conditions from chilling winters to warm summers.The temperatures in Gretna shift extensively from a low of 17.1°F (-8.3°C) in winter to a high of 84.7°F (29.3°C) in summer. Relative humidity remains fairly stable throughout the year, ranging from a low of 65% in October to 80% in January. The city also sees variations in rainfall from a minimum of 0.63" (16mm) in January and February to a maximum of 3.7" (94mm) in June. Rainfall days per month peak in May with 16.3 days, and dip to a mere 2.9 in February.
A noteworthy weather pattern observed in Gretna involves snowfall, which is largely restricted to the colder months, from October to March, with the maximum snowfall of 2.2" (56mm) recorded in February. Also, the fewest hours of daylight can be observed in December with 9.3 hours per day, which gradually increase reaching the maximum of 15.1 hours in June.
The best time to visit Gretna
The ideal time to visit Gretna, weather-wise, is the period between May and September. During these months, temperatures range from a pleasant 61.3°F (16.3°C) to 84.7°F (29.3°C). These months also see the longest hours of daylight, enhancing sightseeing and outdoor activities. Despite having the maximum rainfall during these months, the number of sunny days is still substantial, ranging from 11.3 in June to 15.7 in September.The worst time to visit Gretna
The least favorable time to visit Gretna is during the cold months of December, January, and February. During this period, temperatures often plummet to lows between 17.1°F (-8.3°C) in January and 35.1°F (1.7°C) in February. Visits during these months may not be ideal due to the limited amount of daylight, reaching a minimum of 9.3 hours in December, and snowfall reaching up to 2.2" (56mm) in February.Spring weather in Gretna
Spring in Gretna comes between March and May, with average temperatures climbing from 50°F (10°C) at the beginning to 71.2°F (21.8°C) by the end. Rainfall also increases dramatically from 1.14" (29mm) in March to a peak of 3.62" (92mm) in May. With an average daylight span from 12 hours to 14.5 hours during these months, visitors can enjoy longer periods of daylight.Summer weather in Gretna
Summers, spanning from June to August, are the warmest months in Gretna with temperatures soaring to a peak average of 84.7°F (29.3°C) in July. Rain levels are relatively high with 3.7" (94mm) in June to 2.64" (67mm) by August. However, abundant sunshine prevails as the average sunshine hours peak at a high of 10.5 hours in July.Autumn weather in Gretna
Autumn months of September through November in Gretna, showcase a progressive fall in temperature from a pleasant 77°F (25°C) to a cooler 49.3°F (9.6°C). Rainfall tends to decrease through the season, starting with 2.28" (58mm) in September to a mere 0.75" (19mm) by November. The daylight hours also diminish as the season progresses, with 12.5 hours in September dropping to 9.9 hours by November.Winter weather in Gretna
The winter season, December through February, exposes Gretna to the coldest temperatures of the year, plummeting to lows between 22.3°F (-5.4°C) and 34.7°F (1.5°C). Snowfall is prevalent reaching 1.81" (46mm) in December and 2.2" (56mm) in February. Limited sunshine and daylight hours, dropping to as low as 9.3 hours in December, further contribute to the cold and stark Winter landscape.Weather in January
January is typically the wettest and coldest month in Gretna, Nebraska, with the thermal mercury often plunging to a chilling 17.1°F (-8.3°C) while the highest temperature often reaches 30.6°F (-0.8°C). It is a month of frosty mornings and wintry landscapes, while evenings may see soft snowfall. Weather in January »Weather in February
February in Gretna, Nebraska, experiences steady climatic conditions, with temperatures subtly nudging upwards from January. Driven by colder winds, a dusting of snow lays a soft, pristine carpet over the city. Nonetheless, the daylight hours start to stretch slowly, signaling the impending arrival of spring. Weather in February »Weather in March
As the city starts transitioning towards spring, March sees a significant jump in temperatures, ranging between a minimum of 33.8°F (1°C) and a maximum of 50°F (10°C). March tends to bring changeable weather that can swing from chilly mornings to mildly warm afternoons. Weather in March »Weather in April
In April, the transition from winter to spring is evident in Gretna. The temperatures start to thaw, nudging upwards from March's chilly readings. Fringing blossoms and a subtle warmth in the air herald the arrival of spring. As the snow gradually ebbs away, the city starts to regain its vibrant hues, transforming into a beautiful spring spectacle. The rise of average high-temperatures is seen in April, with an increase from a cool 50°F (10°C) in March to an enjoyable 61.3°F (16.3°C). Weather in April »Weather in May
May comes with an assurance of warmer temperatures that range between a comfortable 53.8°F (12.1°C) and a pleasant 71.2°F (21.8°C). Lush green terrains signal the arrival of summer as Gretna moves past the chill of winter and the tenderness of spring. Weather in May »Weather in June
June sees a noticeable surge in temperatures, soaring to the year's highest average of 82°F (27.8°C), ushering in the summer in earnest. This uptick in mercury levels marks the advent of outdoor activities. Summer breezes tease grass stalks into a resin-scented frolic, while the sun generously shares its warm summer kisses. Weather in June »Weather in July
July continues the summer high in Gretna, Nebraska, with an average high reaching to about 84.7°F (29.3°C). It's the city's zenith of summer when the sun is in its glorious prime. Lazy rivers meander through sun-baked meadows, while the wind whispers through the tall prairie grass. Weather in July »Weather in August
As August rolls in, the weather conditions subtly shift in Gretna, Nebraska, with temperatures dipping slightly to a high of 82.9°F (28.3°C). Still in the clasp of summer, the city alarms with its quiet charm. The fauna thrives amidst balmy afternoons and soft, early sunsets. Weather in August »Weather in September
September brings a noticeable decline in temperatures, dropping to a comfortable range of between a minimum of 57.6°F (14.2°C) and maximum of 77°F (25°C). The occasional breeze carries a hint of oncoming autumn. The city's canvas starts turning into a palette of golds and ambers, heralding fall's scenic beauty. Weather in September »Weather in October
October in Gretna, Nebraska, presents a mix of crisp mornings and moderately warm afternoons. Hints of the impending winter can be felt as the air cools further. Gretna takes on an idyllic character, with fallen leaves carpeting the cityscape in rustic hues. Weather in October »Weather in November
The weather in November dips further with average temperatures dropping between a chilly 34°F (1.1°C) and a cool 49.3°F (9.6°C). Flecks of snow start appearing, hinting at the upcoming winter's arrival. The daylight shrinks, drawing the curtain early on chilly afternoons. Weather in November »Weather in December
December rings in the winter season in Gretna, Nebraska, with temperatures ranging between 22.3°F (-5.4°C) to 34.7°F (1.5°C). The city turns into a frosty panorama, adorned with a pristine snow mantle. The charm of December lies in the city's transformation into a winter wonderland, promising a white Christmas scenario. Weather in December »Updated: Feb 13, 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 tends to be the coldest month in Gretna, with temperatures averaging a daily high of 30.6°F (-0.8°C) and a low of 17.1°F (-8.3°C).
With an average relative humidity of 80%, January is the most humid month in Gretna.
The months with the least rainfall are January and February Rain falls for 4 days and accumulates 0.63" (16mm) of rain.
Throughout the year, in Gretna, Nebraska, there are 120.7 rainfall days, and 22.87" (581mm) of precipitation is accumulated.
Months with snowfall in Gretna, Nebraska, are January through May, October through December.
Throughout the year, there are 30 snowfall days, and 9.65" (245mm) of snow is accumulated.
The month with the least sunshine in Gretna, Nebraska, is January, with an average of 4.9h of sunshine.
The months with the lowest UV index in Gretna, Nebraska, are January, February, November and December, with an average maximum UV index of 2.
The month with the most snowfall is February, when snow falls for 7.2 days and typically aggregates up to 2.2" (56mm) 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.
June is the month with the most rainfall. Rain falls for 15.6 days and accumulates 3.7" (94mm) of precipitation.
In Gretna, snow does not fall in June through September.
The month with the longest days in Gretna, Nebraska, is June, with an average of 15h and 6min of daylight.
The months with the highest UV index in Gretna, Nebraska, are June through August, with an average maximum UV index of 6.
July proves to be the warmest month in Gretna, recording an average peak temperature of 84.7°F (29.3°C) and a minimum temperature of 66.7°F (19.3°C).
The month with the most sunshine in Gretna, Nebraska, is July, with an average of 10.5h of sunshine.
The least humid month is October, with an average relative humidity of 65%.
With an average of 9h and 18min of daylight, December has the shortest days of the year in Gretna, Nebraska.
Average temperature
Gretna, NE
The warmest month (with the highest average high temperature) is July (84.7°F).
The month with the lowest average high temperature is January (30.6°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 (17.1°F).
Average pressure
Gretna, NE
- Average pressure in January:
30.16"Hg - Average pressure in February:
30.14"Hg - Average pressure in March:
30.05"Hg - Average pressure in April:
29.91"Hg - Average pressure in May:
29.92"Hg - Average pressure in June:
29.86"Hg
- Average pressure in July:
29.94"Hg - Average pressure in August:
29.95"Hg - Average pressure in September:
29.99"Hg - Average pressure in October:
30"Hg - Average pressure in November:
30.08"Hg - Average pressure in December:
30.13"Hg
The month with the highest atmospheric pressure is January (30.16"Hg).
The month with the lowest atmospheric pressure is June (29.86"Hg).
Average wind speed
Gretna, NE
- Average wind speed in January:
9.9mph - Average wind speed in February:
10.1mph - Average wind speed in March:
10.5mph - Average wind speed in April:
10.6mph - Average wind speed in May:
9.1mph - Average wind speed in June:
8.6mph
- Average wind speed in July:
7.1mph - Average wind speed in August:
7.4mph - Average wind speed in September:
8.5mph - Average wind speed in October:
9.4mph - Average wind speed in November:
10.1mph - Average wind speed in December:
9.7mph
The windiest month (with the highest average wind speed) is April (10.6mph).
The calmest month (with the lowest average wind speed) is July (7.1mph).
Average humidity
Gretna, NE
The month with the highest relative humidity is January (80%).
The month with the lowest relative humidity is October (65%).
Average rainfall
Gretna, NE
- Average rainfall in January:
0.63" - Average rainfall in February:
0.63" - Average rainfall in March:
1.14" - Average rainfall in April:
1.97" - Average rainfall in May:
3.62" - Average rainfall in June:
3.7"
- Average rainfall in July:
2.17" - Average rainfall in August:
2.64" - Average rainfall in September:
2.28" - Average rainfall in October:
2.05" - Average rainfall in November:
0.75" - Average rainfall in December:
1.3"
The wettest month (with the highest rainfall) is June (3.7").
The driest months (with the least rainfall) are January and February (0.63").
Average rainfall days
Gretna, NE
- Average rainfall days in January:
4 days - Average rainfall days in February:
2.9 days - Average rainfall days in March:
9.8 days - Average rainfall days in April:
13.8 days - Average rainfall days in May:
16.3 days - Average rainfall days in June:
15.6 days
- Average rainfall days in July:
13.3 days - Average rainfall days in August:
14.1 days - Average rainfall days in September:
12.5 days - Average rainfall days in October:
9 days - Average rainfall days in November:
4.8 days - Average rainfall days in December:
4.6 days
The month with the highest number of rainy days is May (16.3 days).
The month with the least rainy days is February (2.9 days).
Average snowfall
Gretna, NE
- Average snowfall in January:
2.05" - Average snowfall in February:
2.2" - Average snowfall in March:
1.42" - Average snowfall in April:
0.91" - Average snowfall in May:
0.24" - Average snowfall in June:
0"
The month with the highest snowfall is February (2.2").
The months with the least snowfall are June, July, August and September (0").
Average snowfall days
Gretna, NE
- Average snowfall days in January:
8.5 days - Average snowfall days in February:
7.2 days - Average snowfall days in March:
3.6 days - Average snowfall days in April:
1 days - Average snowfall days in May:
0.2 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:
0.9 days - Average snowfall days in November:
2.1 days - Average snowfall days in December:
6.5 days
The month with the highest number of snowfall days is January (8.5 days).
The months with the least snowfall days are June, July, August and September (0 days).
Average daylight / Average sunshine
Gretna, NE
- 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:
4h and 54min - Average sunshine in February:
5h and 42min - Average sunshine in March:
6h and 36min - Average sunshine in April:
8h and 24min - Average sunshine in May:
8h and 54min - Average sunshine in June:
10h and 24min
- Average sunshine in July:
10h and 30min - Average sunshine in August:
10h and 0min - Average sunshine in September:
9h and 0min - Average sunshine in October:
6h and 18min - Average sunshine in November:
6h and 0min - Average sunshine in December:
5h and 12min
The month with the most sunshine is July (Average sunshine: 10h and 30min).
The month with the least sunshine is January (Average sunshine: 4h and 54min).
Average sunshine days
Gretna, NE
- Average sunshine days in January:
19.2 days - Average sunshine days in February:
17.9 days - Average sunshine days in March:
17.6 days - Average sunshine days in April:
13.3 days - Average sunshine days in May:
12.8 days - Average sunshine days in June:
11.3 days
- Average sunshine days in July:
14.1 days - Average sunshine days in August:
14.1 days - Average sunshine days in September:
15.7 days - Average sunshine days in October:
19.8 days - Average sunshine days in November:
22.2 days - Average sunshine days in December:
20.7 days
The month with the most sunshine days is November (22.2 days).
The month with the least sunshine days is June (11.3 days).
Average UV index
Gretna, NE
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
Gretna, NE
The month with the most cloud cover is January (Cloud cover 47).
The month with the least cloud cover is July (Cloud cover 25).
Average visibility
Gretna, NE
The months with the highest visibility are January, February, March, April, May, June, July, August, September, October, November and December (6mi).
The months with the lowest visibility are January, February, March, April, May, June, July, August, September, October, November and December (6mi).
