Climate Insights for Youngsville

San Juan County, Louisiana, United States

Hottest
July
33°C peak
Coldest
January
7°C low
Wettest
August
358mm rain
Best to Visit
May, October, November
Mild temps & low rain

Climate Overview

The climate in Youngsville is warm and mild. The average annual temperature is 21°C and approximately 1456mm of precipitation falls per year. August is the wettest month, receiving around 358mm of rainfall. Youngsville is in the Northern Hemisphere. Summer begins at the end of June and lasts through September. The summer months are: July, June, August. The coldest months are January, February, December, when temperatures can drop to 7°C.

Temperature

10° 20° 30° 40° Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec Jan Max: 16° Average: 11° Min: 7° Feb Max: 20° Average: 14° Min: 9° Mar Max: 23° Average: 19° Min: 15° Apr Max: 25° Average: 21° Min: 17° May Max: 28° Average: 24° Min: 20° Jun Max: 32° Average: 28° Min: 24° Jul Max: 33° Average: 29° Min: 26° Aug Max: 31° Average: 28° Min: 25° Sep Max: 31° Average: 27° Min: 23° Oct Max: 29° Average: 23° Min: 17° Nov Max: 24° Average: 18° Min: 13° Dec Max: 20° Average: 15° Min: 11°
Max
Average
Min

Temperatures in Youngsville vary considerably across the year, with a 26°C difference between the coldest and warmest months. The warmest month is July, when average highs reach 33°C and the mean temperature sits around 29°C. January is the coolest month, with minimum temperatures around 7°C and an average of 11°C. On average, daily temperatures fluctuate by about 9°C between overnight lows and afternoon highs. The sharpest temperature change occurs between February and March, with a 5°C shift in average temperatures.

Precipitation

0mm 50mm 100mm 150mm 200mm 250mm 300mm 350mm 400mm Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec Jan Precipitation: 116mm Feb Precipitation: 87mm Mar Precipitation: 201mm Apr Precipitation: 126mm May Precipitation: 87mm Jun Precipitation: 105mm Jul Precipitation: 102mm Aug Precipitation: 358mm Sep Precipitation: 84mm Oct Precipitation: 3mm Nov Precipitation: 61mm Dec Precipitation: 125mm
Precipitation

Youngsville is a fairly wet location, receiving approximately 1456mm of precipitation annually, which averages out to around 121mm per month. The wettest month is August, averaging 358mm of rainfall. March and April also tend to see above-average precipitation. The driest month is October, with just 3mm. That's 354mm less than August, the wettest month. Rainfall is heavily concentrated in certain months, creating a distinct wet and dry season. Visitors should plan around these patterns, as the difference between peak and low months is dramatic.

Wind

0km/h 5km/h Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec Jan Wind Speed: 4km/h Feb Wind Speed: 4km/h Mar Wind Speed: 4km/h Apr Wind Speed: 4km/h May Wind Speed: 3km/h Jun Wind Speed: 2km/h Jul Wind Speed: 2km/h Aug Wind Speed: 2km/h Sep Wind Speed: 2km/h Oct Wind Speed: 3km/h Nov Wind Speed: 3km/h Dec Wind Speed: 4km/h
Wind Speed

Youngsville is relatively calm, with an average annual wind speed of 3km/h. For context, sustained winds below 12km/h are generally light, while anything above 25km/h is considered strong. The windiest month is March, averaging 4km/h, though still comfortable for most outdoor activities. The calmest conditions occur in June, with average winds dropping to 2km/h, making it an ideal period for wind-sensitive activities. There is moderate seasonal variation in wind speed, with a 2km/h gap between the calmest and windiest months.

Seasons

Winter
Dec 21
Spring
Mar 20
Summer
Jun 21
Autumn
Sep 23

52 days until Autumn

It is currently summer in Youngsville, which began on June 21, 2026. Youngsville is in the Northern Hemisphere, where spring begins in March, summer in June, autumn in September, and winter in December. The warmest period peaks in July at around 33°C, while the coldest stretch bottoms out in January near 7°C. Autumn is next, beginning on September 23, 2026 — 52 days from now.

Spring

Temperatures range from 15 to 28°C. Rainfall is heavy, totalling around 415mm across the season with a monthly average of 138mm. Winds are generally light, averaging 4km/h. An umbrella or waterproof jacket is advisable as spring showers are frequent.

Summer

Temperatures range from 24 to 33°C. Rainfall is heavy, totalling around 565mm across the season with a monthly average of 188mm. Winds are generally light, averaging 2km/h. Light, breathable clothing is ideal — perfect conditions for outdoor activities.

Autumn

Temperatures range from 13 to 31°C. Rainfall is relatively light, with around 148mm over the season and a monthly average of 49mm. Winds are generally light, averaging 3km/h. Layered clothing works best as temperatures gradually cool — enjoy the crisp air and changing scenery.

Winter

Temperatures range from 7 to 20°C. Rainfall is heavy, totalling around 328mm across the season with a monthly average of 109mm. Winds are generally light, averaging 4km/h. A light jacket or sweater is usually sufficient, though cooler evenings may call for an extra layer.

Best Time to Visit

Jan 11°
Feb 14°
Mar 19°
Apr 21°
May 24°
Jun 28°
Jul 29°
Aug 28°
Sep 27°
Oct 23°
Nov 18°
Dec 15°

The best time to visit Youngsville is during May, October and November, when the weather is most comfortable for travellers. During these months, average temperatures hover around 22°C with modest rainfall averaging 50mm per month. By contrast, July can be uncomfortably hot with highs reaching 33°C, while January is the coldest period with lows dropping to 7°C. A light rain jacket is recommended, though showers are generally brief and shouldn't disrupt your plans.

Monthly Climate Data

The table below shows monthly climate averages for Youngsville based on historical weather data. Min and max temperatures represent typical overnight lows and afternoon highs for each month, shown in degrees Celsius (°C). Precipitation is measured in millimetres (mm) and indicates the average total rainfall per month. Wind speed is the average sustained speed in kilometres per hour (km/h). All values are based on averages from over 10 years of historical weather data. The current month is highlighted for quick reference.

Month
Min Temperature
Max Temperature
Wind Speed
Precipitation
Snow
Jan
7 °C
16 °C
4 km/h
116 mm
0 cm
Feb
9 °C
20 °C
4 km/h
87 mm
0 cm
Mar
15 °C
23 °C
4 km/h
201 mm
0 cm
Apr
17 °C
25 °C
4 km/h
126 mm
0 cm
May
20 °C
28 °C
3 km/h
87 mm
0 cm
Jun
24 °C
32 °C
2 km/h
105 mm
0 cm
Jul
26 °C
33 °C
2 km/h
102 mm
0 cm
Aug Current
25 °C
31 °C
2 km/h
358 mm
0 cm
Sep
23 °C
31 °C
2 km/h
84 mm
0 cm
Oct
17 °C
29 °C
3 km/h
3 mm
0 cm
Nov
13 °C
24 °C
3 km/h
61 mm
0 cm
Dec
11 °C
20 °C
4 km/h
125 mm
0 cm
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