Pittsburg, CA Weather Forecast for 5-Days

Updated: Thu Mar 5th 2026 9:00 AM PST

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Pittsburg, CA Weather – 3-5 – Sunny
71° / 48°
Sunny
Pittsburg may see a sunny day, with daytime highs of 71°F and overnight lows near 48°F. Wind will be moderate, blowing around 14mph on average and gusts of 15.4mph at 12 PM. Humidity levels should be comfortable, sitting around 55% on average, the maximum being 55% at 9 PM and 36% being its lowest at 4 PM. Barometric pressure is its highest of 30.2inHg at 10 AM, a lowest point of 30.12inHg at 4 PM with an avg 30.15inHg.
Pittsburg, CA Weather – 3-6 – Sunny
71° / 44°

Weather Tomorrow

Sunny
Bright and sunny conditions in Pittsburg, with a high of 71°F and a low of 44°F. Wind will be moderate, blowing around 11mph on average and gusts of 15mph at 2 AM. Humidity levels should be comfortable, sitting around 53% on average, the maximum being 64% at 11 PM and 40% being its lowest at 2 PM. Barometric pressure is its highest of 30.22inHg at 11 AM, a lowest point of 30.07inHg at 11 PM with an avg 30.17inHg.
Pittsburg, CA Weather – 3-7 – Sunny
74° / 46°
Sunny
Pittsburg could see sunshine with daytime highs of 74°F and nighttime lows near 46°F. Winds will be light at 9mph and gusts of 10.3mph at 11 AM. The humidity will be on the higher side, averaging about 62%, the maximum being 74% at 8 AM and 46% being its lowest at 2 PM. Barometric pressure is its highest of 30.21inHg at 11 AM, a lowest point of 30.11inHg at 5 PM with an avg 30.16inHg.
Pittsburg, CA Weather – 3-8 – Sunny
74° / 51°
Sunny
A sunny day is in the forecast for Pittsburg, with a high of 74°F and a low of 51°F. Winds will be light at 5mph and gusts of 5.2mph at 11 PM. The humidity will be on the higher side, averaging about 66%, the maximum being 85% at 8 AM and 45% being its lowest at 4 PM. Barometric pressure is its highest of 30.16inHg at 2 AM, a lowest point of 29.94inHg at 5 PM with an avg 30.03inHg.
Pittsburg, CA Weather – 3-9 – Sunny
74° / 51°
Sunny
Daytime highs will reach 74°F with lows dropping to 51°F in Pittsburg, where it will be sunny. Winds will be light at 7mph and gusts of 12.7mph at 11 PM. The humidity will be on the higher side, averaging about 72%, the maximum being 89% at 8 AM and 48% being its lowest at 4 PM. Barometric pressure is its highest of 30.06inHg at 12 AM, a lowest point of 29.87inHg at 5 PM with an avg 29.93inHg.
Pittsburg, CA Weather – 3-10 – Sunny
71° / 50°
Sunny
It will be sunny in Pittsburg, with a high of 71°F and a low of 50°F. Winds will be light at 8mph and gusts of 12.7mph at 8 PM. The humidity will be on the higher side, averaging about 69%, the maximum being 88% at 5 AM and 44% being its lowest at 5 PM. Barometric pressure is its highest of 30.05inHg at 11 PM, a lowest point of 29.93inHg at 1 AM with an avg 29.99inHg.

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