Porterville, CA Weather Forecast for 5-Days

Updated: Sat Apr 18th 2026 4:15 PM PDT

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Porterville, CA Weather – 4-18 – Sunny
85° / 45°
Sunny
Porterville may see a sunny day, with daytime highs of 85°F and overnight lows near 45°F. Winds will be light at 8mph and gusts of 15mph at 7 PM. Humidity levels should be comfortable, sitting around 36% on average, the maximum being 29% at 11 PM and 15% being its lowest at 5 PM. Barometric pressure is its highest of 29.88inHg at 10 PM, a lowest point of 29.85inHg at 6 PM with an avg 29.86inHg.
Porterville, CA Weather – 4-19 – Sunny
84° / 55°

Weather Tomorrow

Sunny
Daytime highs will reach 84°F with lows dropping to 55°F in Porterville, where bright and sunny conditions. Winds will be light at 9mph and gusts of 16.9mph at 8 PM. The air will be relatively dry with average humidity levels below 30%, the maximum being 37% at 2 AM and 14% being its lowest at 4 PM. Barometric pressure is its highest of 29.88inHg at 8 AM, a lowest point of 29.75inHg at 6 PM with an avg 29.83inHg.
Porterville, CA Weather – 4-20 – Sunny
82° / 53°
Sunny
In Porterville, it will be sunny with highs near 82°F and lows around 53°F. Wind will be moderate, blowing around 13mph on average and gusts of 22.7mph at 8 PM. The air will be relatively dry with average humidity levels below 30%, the maximum being 36% at 12 AM and 16% being its lowest at 5 PM. Barometric pressure is its highest of 29.94inHg at 10 AM, a lowest point of 29.81inHg at 6 PM with an avg 29.89inHg.
Porterville, CA Weather – 4-21 – Moderate Rain
63° / 48°
Moderate Rain
In Porterville, it will rain at times with highs near 63°F and lows around 48°F. The chance of rain is 85% with an estimated 0.43in. Wind will be moderate, blowing around 12mph on average and gusts of 15mph at 3 PM. Humidity levels should be comfortable, sitting around 59% on average, the maximum being 88% at 2 PM and 34% being its lowest at 12 AM. Barometric pressure is its highest of 30.07inHg at 11 PM, a lowest point of 29.89inHg at 5 AM with an avg 29.95inHg.
Porterville, CA Weather – 4-22 – Scattered Showers
67° / 45°
Scattered Showers
Showers likely at times in Porterville, with a high of 67°F and a low of 45°F. The chance of rain is 80% with an estimated 0.05in. Wind will be moderate, blowing around 13mph on average and gusts of 17.9mph at 8 PM. The humidity will be on the higher side, averaging about 62%, the maximum being 89% at 2 AM and 34% being its lowest at 3 PM. Barometric pressure is its highest of 30.16inHg at 8 AM, a lowest point of 30.03inHg at 6 PM with an avg 30.1inHg.
Porterville, CA Weather – 4-23 – Sunny
71° / 46°
Sunny
Porterville is set for sunshine with temperatures peaking at 71°F and dipping to 46°F. Winds will be light at 7mph and gusts of 9.9mph at 8 PM. Humidity levels should be comfortable, sitting around 60% on average, the maximum being 79% at 5 AM and 35% being its lowest at 5 PM. Barometric pressure is its highest of 30.1inHg at 2 AM, a lowest point of 29.9inHg at 5 PM with an avg 30.01inHg.

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