Climate and monthly weather forecastLebanon, TN

The climate of Lebanon

The city of Lebanon, Tennessee, USA, lies within the Köppen climate classification of Cfa, which corresponds to a humid subtropical climate with no dry season. Its geographical position in the southeaster part of North America, contributes to this unique weather pattern. The year-round weather conditions exhibit significant fluctuations with discernible patterns linked to the four seasons - spring, summer, autumn, and winter.

Across the year, Lebanon experiences an uptick in the range of temperatures, relative humidity, rainfall, daylight hours, and sunshine hours. Pressure values exhibit a mild dip and rise, while wind speed and visibility show less variability. Variations in these weather parameters create distinctive seasonal patterns that contribute to the overall allure of Lebanon's climate.

The year in Lebanon commences with the lowest average high temperature of 43.9°F (6.6°C) in January, slowly increasing to reach the peak of 87.4°F (30.8°C) in July. Following this peak, temperatures start to drop, concluding the year with a chill in December. The relative humidity stays fairly stable throughout the year, wavering between 75% in October and 79% during March.

Rainfall presents an interesting pattern, with the least amount of 2.24" (57mm) in November and the most precipitation of 4.92" (125mm) occurring in July. A similar pattern emerges for the number of rainy days, being the least in November and the highest in July. Sunshine hours also present marked differences, descending from a high of 10.5 hours per day in June to a low of 4.7 hours in December and January.

The best time to visit Lebanon

Considering the temperature, humidity, sunshine hours, and rainfall, the ideal time to visit Lebanon falls between April and October. During this period, daylight and sunshine hours reach their zenith, offsetting the humidity and providing ample opportunities to explore the outdoors. The average high temperature hovers around a comfortable range from 68.5°F (20.3°C) to 86.4°F (30.2°C), making it pleasant for sightseeing and other outdoor activities.

The worst time to visit Lebanon

The least hospitable months in Lebanon are typically January and December attributing to cold temperatures. During these months, the average high temperatures dip to 43.9°F (6.6°C) and 48.9°F (9.4°C) respectively, making outdoor activities less enjoyable. Plus, the sunshine hours bottom out at 4.7 per day, significantly reducing the available daylight hours for exploring the city.

Spring weather in Lebanon

As spring unfolds from March to May, Lebanon experiences a refreshing leap in average high temperatures beginning at 58.1°F (14.5°C) in March and culminating at a pleasant 77.4°F (25.2°C) by the end of May. Rainfall sees a fairly steady trend with an average of 2.8" (71mm) in March, 3.54" (90mm) in April and 3.35" (85mm) in May. The city also starts to get ample sunshine with an average of 5.7 hours per day in March, soaring to a whopping 9.5 hours per day by May.

Summer weather in Lebanon

Summer in Lebanon, lasting from June to August, is marked by high temperatures, with the mercury often soaring to 87.4°F (30.8°C) in July. Humidity remains relatively stable, averaging around 76%, leading to some muggy days. Rainfall is significant during the summer months with an average of 4.92" (125mm) in July, marking the wettest month of the year.

Autumn weather in Lebanon

Autumn sets in from September to November and brings a decline in temperature from 81°F (27.2°C) in September to 56.7°F (13.7°C) in November. Although rainfall decreases during this season, sunshine hours too start to dwindle from 8.5 in September to 5.7 in November. The lowering in temperature and humidity coupled with the reduced precipitation makes it a favorite period for nature lovers to soak up Lebanon's autumn foliage.

Winter weather in Lebanon

Winter in Lebanon, stretches from December to February, with the coldest month being January. The average high temperature during these months ranges between 43.9°F (6.6°C) and 49.5°F (9.7°C) while the average lows hover between 30°F (-1.1°C) and 34.3°F (1.3°C). Despite the snowfall being minimal, an average of 0.55" (14mm) in December, the low temperatures can make outdoor activities unfavorable.

Weather in January

Noteworthy features of January weather in Lebanon, Tennessee include its high humidity rate of 77% and the chill brought on by the lowest daytime temperatures of the year, which are around 43.9°F (6.6°C). As compared to December, January experiences a slight raise in both maximum and minimum temperatures leading to a bit of a thaw. Weather in January »

Weather in February

The transitional month of February in Lebanon, Tennessee, starts to shake off the winter cold and gradually welcome a hint of spring warmth. Snowfall that is present in January dwindles, reaching a scant 0.94" (24mm), clearing the way for the resurgence of greenery in the following months. Weather in February »

Weather in March

Signifying the transition from winter to spring, March brings milder weather to Lebanon, Tennessee with average high temperatures of 58.1°F (14.5°C). It is worth noting the more comfortable temperatures when contrasted with the lingering chill of February. Weather in March »

Weather in April

In April, Lebanon, Tennessee, witnesses a meteorological shift with an average high of 68.5°F (20.3°C), marking the full arrival of spring. The shift between March and April showcases the true essence of a Tennessee spring, with its blossoms fully unfurled. Weather in April »

Weather in May

In Lebanon, Tennessee, May is characterized by the definite departure from spring, as the thermometer shows a high average of 77.4°F (25.2°C), announcing the arrival of summer. Considered a relatively dry month compared to the preceding period of April, it sets the stage for the upcoming dry summer months. Weather in May »

Weather in June

June marks the start of peak summer in Lebanon, Tennessee, bringing with it the year’s highest average temperatures of 85.3°F (29.6°C). The jump in temperature from May to June indicates the arrival of hot summer days, especially in comparison to the enticing warmth of May. Weather in June »

Weather in July

July in Lebanon, Tennessee witnesses the pinnacle of summer heat, as it records the highest maximum average temperature of the year at 87.4°F (30.8°C). This maximum temperature anomaly makes July the hottest month of the year, outperforming both June and August. Weather in July »

Weather in August

Following the heatwave of July, Lebanon, Tennessee welcomes an August graced by a slight dip in average maximum temperature to 86.4°F (30.2°C). This month, acting as a transitional period, says goodbye to the peak summer heat and ushers in the coolness of the forthcoming autumn. Weather in August »

Weather in September

In Lebanon, Tennessee, September acts as the threshold to fall with average high temperatures decreasing to 81°F (27.2°C). The palpable drop of temperature as it transitions from August to September hints at the incoming cooler autumn months. Weather in September »

Weather in October

October in Lebanon, Tennessee, is known for its classic fall weather, with high temperatures dropping to around 69.1°F (20.6°C). Marked by a significant decline from the warm spell of September, October brings a comforting coolness, a welcome respite from the summer heat. Weather in October »

Weather in November

As winter draws near, November in Lebanon, Tennessee, features a further drop in average high temperatures, reaching 56.7°F (13.7°C). The change from October, which still retained some warmth, to the chillier November sets the tone for incoming winter. Weather in November »

Weather in December

December in Lebanon, Tennessee, experiences the onset of winter with average high temperatures dipping further to 48.9°F (9.4°C). A significant drop from November's already chilly climate marks December as the beginning of the winter season. Weather in December »