Climate Insights for Collierville

Yakima County, California, United States

Hottest
July
34°C peak
Coldest
December
5°C low
Wettest
January
149mm rain
Best to Visit
April, May, June
Mild temps & low rain

Climate Overview

The climate in Collierville is temperate. The average annual temperature is 17°C and approximately 741mm of precipitation falls per year. January is the wettest month, receiving around 149mm of rainfall. Collierville is in the Northern Hemisphere. Summer begins at the end of June and lasts through September. The summer months are: July, August, June. The coldest months are December, February, January, when temperatures can drop to 5°C.

Temperature

10° 20° 30° 40° Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec Jan Max: 15° Average: 10° Min: 6° Feb Max: 17° Average: 11° Min: 6° Mar Max: 19° Average: 13° Min: 8° Apr Max: 23° Average: 16° Min: 10° May Max: 27° Average: 19° Min: 12° Jun Max: 32° Average: 23° Min: 16° Jul Max: 34° Average: 25° Min: 17° Aug Max: 33° Average: 24° Min: 17° Sep Max: 31° Average: 22° Min: 15° Oct Max: 27° Average: 18° Min: 11° Nov Max: 18° Average: 12° Min: 6° Dec Max: 14° Average: 9° Min: 5°
Max
Average
Min

Temperatures in Collierville vary considerably across the year, with a 29°C difference between the coldest and warmest months. The warmest month is July, when average highs reach 34°C and the mean temperature sits around 25°C. December is the coolest month, with minimum temperatures around 5°C and an average of 9°C. On average, daily temperatures fluctuate by about 13°C between overnight lows and afternoon highs. The sharpest temperature change occurs between October and November, with a 6°C shift in average temperatures.

Precipitation

0mm 25mm 50mm 75mm 100mm 125mm 150mm Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec Jan Precipitation: 149mm Feb Precipitation: 113mm Mar Precipitation: 133mm Apr Precipitation: 54mm May Precipitation: 25mm Jun Precipitation: 2mm Jul Precipitation: 1mm Aug Precipitation: 1mm Sep Precipitation: 7mm Oct Precipitation: 40mm Nov Precipitation: 77mm Dec Precipitation: 139mm
Precipitation

Collierville is a relatively dry area, receiving approximately 741mm of precipitation annually, which averages out to around 62mm per month. The wettest month is January, averaging 149mm of rainfall. December and March also tend to see above-average precipitation. The driest month is July, with just 1mm. That's 149mm less than January, 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 10km/h 15km/h Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec Jan Wind Speed: 14km/h Feb Wind Speed: 15km/h Mar Wind Speed: 15km/h Apr Wind Speed: 14km/h May Wind Speed: 14km/h Jun Wind Speed: 14km/h Jul Wind Speed: 13km/h Aug Wind Speed: 13km/h Sep Wind Speed: 12km/h Oct Wind Speed: 12km/h Nov Wind Speed: 12km/h Dec Wind Speed: 13km/h
Wind Speed

Collierville is mildly breezy, with an average annual wind speed of 13km/h. For context, sustained winds below 12km/h are generally light, while anything above 25km/h is considered strong. The windiest month is February, averaging 15km/h, though still comfortable for most outdoor activities. The calmest conditions occur in November, with average winds dropping to 12km/h, making it an ideal period for wind-sensitive activities. Wind conditions are fairly consistent throughout the year, varying by only 3km/h between the calmest and windiest months.

Seasons

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

89 days until Summer

It is currently spring in Collierville, which began on March 20, 2026. Collierville 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 34°C, while the coldest stretch bottoms out in December near 5°C. Summer is next, beginning on June 21, 2026 — 89 days from now.

Spring

Temperatures range from 8 to 27°C. Precipitation is moderate at around 212mm for the season, averaging 71mm per month. Winds are generally light, averaging 14km/h. An umbrella or waterproof jacket is advisable as spring showers are frequent.

Summer

Temperatures range from 16 to 34°C. Precipitation is minimal, with only around 4mm for the entire season. Winds are generally light, averaging 13km/h. Light, breathable clothing is ideal — perfect conditions for outdoor activities.

Autumn

Temperatures range from 6 to 31°C. Rainfall is relatively light, with around 124mm over the season and a monthly average of 41mm. Winds are generally light, averaging 12km/h. Layered clothing works best as temperatures gradually cool — enjoy the crisp air and changing scenery.

Winter

Temperatures range from 5 to 17°C. Rainfall is heavy, totalling around 401mm across the season with a monthly average of 134mm. Winds are generally light, averaging 14km/h. A light jacket or sweater is usually sufficient, though cooler evenings may call for an extra layer.

Best Time to Visit

Jan 10°
Feb 11°
Mar 13°
Apr 16°
May 19°
Jun 23°
Jul 25°
Aug 24°
Sep 22°
Oct 18°
Nov 12°
Dec

The best time to visit Collierville is during April, May, June, July, August, September and October, when the weather is most comfortable for travellers. During these months, average temperatures hover around 21°C with modest rainfall averaging 19mm per month. By contrast, December can be quite cold with temperatures dropping to 5°C. With minimal rainfall expected, you can pack light and plan outdoor activities with confidence.

Monthly Climate Data

The table below shows monthly climate averages for Collierville 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
6 °C
15 °C
14 km/h
149 mm
0 cm
Feb
6 °C
17 °C
15 km/h
113 mm
0 cm
Mar Current
8 °C
19 °C
15 km/h
133 mm
0 cm
Apr
10 °C
23 °C
14 km/h
54 mm
0 cm
May
12 °C
27 °C
14 km/h
25 mm
0 cm
Jun
16 °C
32 °C
14 km/h
2 mm
0 cm
Jul
17 °C
34 °C
13 km/h
1 mm
0 cm
Aug
17 °C
33 °C
13 km/h
1 mm
0 cm
Sep
15 °C
31 °C
12 km/h
7 mm
0 cm
Oct
11 °C
27 °C
12 km/h
40 mm
0 cm
Nov
6 °C
18 °C
12 km/h
77 mm
0 cm
Dec
5 °C
14 °C
13 km/h
139 mm
0 cm
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Metric (°C, km/h)