Port Saint John, FL Weather Tomorrow

For a complete weather outlook, review tomorrow's Port Saint John forecast and the following 5 days with precipitation probability, daily and nightly weather conditions, high and low temperature trends, sunrise and sunset information, sky cover, wind speed, wind direction, and wind chill for the Port Saint John area and around Brevard county, Florida.
Updated: Thu Oct 22nd 2026 9:15 AM EDT
Port Saint John, FL Weather – 10-22 – Sunny
79° / 66°
Sunny
Port Saint John may see a sunny day, with daytime highs of 79°F and overnight lows near 66°F. There's a very small chance of rainfall, only about 3%. Wind will be moderate, blowing around 11mph on average and gusts of 18mph at 2 PM. Humidity levels should be comfortable, sitting around 60% on average, the maximum being 72% at 11 PM and 44% being its lowest at 12 PM. Barometric pressure is its highest of 30.05inHg at 9 PM, a lowest point of 29.99inHg at 3 PM with an avg 30.02inHg.
Port Saint John, FL Weather – 10-23 – Scattered Showers
80° / 65°

Weather Tomorrow

Scattered Showers
In Port Saint John, scattered showers are likely with a high near 80°F and a low around 65°F. There's a moderate 36% chance of rainfall with an estimated 0.02in. Wind will be moderate, blowing around 12mph on average and gusts of 19.9mph at 5 PM. Humidity levels should be comfortable, sitting around 59% on average, the maximum being 78% at 11 PM and 43% being its lowest at 12 PM. Barometric pressure is its highest of 30.11inHg at 10 PM, a lowest point of 30.01inHg at 5 AM with an avg 30.06inHg.
Port Saint John, FL Weather – 10-24 – Scattered Showers
79° / 66°
Scattered Showers
Port Saint John is set for passing showers with temperatures peaking at 79°F and dipping to 66°F. Rainfall predicted to have a 68% chance with an estimated 0.16in. Wind will be moderate, blowing around 13mph on average and gusts of 25.1mph at 10 PM. The humidity will be on the higher side, averaging about 70%, the maximum being 86% at 2 AM and 50% being its lowest at 10 AM. Barometric pressure is its highest of 30.13inHg at 9 AM, a lowest point of 30.05inHg at 5 PM with an avg 30.1inHg.
Port Saint John, FL Weather – 10-25 – Scattered Showers
79° / 70°
Scattered Showers
Port Saint John could see passing showers with daytime highs of 79°F and nighttime lows near 70°F. The chance of rain is 78% with an estimated 0.35in. Wind will be moderate, blowing around 17mph on average and gusts of 28mph at 6 AM. The humidity will be on the higher side, averaging about 74%, the maximum being 89% at 5 AM and 54% being its lowest at 9 PM. Barometric pressure is its highest of 30.13inHg at 10 AM, a lowest point of 30.03inHg at 5 PM with an avg 30.08inHg.
Port Saint John, FL Weather – 10-26 – Scattered Showers
81° / 72°
Scattered Showers
Port Saint John could see scattered showers with daytime highs of 81°F and nighttime lows near 72°F. Rainfall predicted to have a 68% chance with an estimated 0.17in. Wind will be moderate, blowing around 15mph on average and gusts of 23.5mph at 12 AM. The humidity will be on the higher side, averaging about 69%, the maximum being 83% at 2 AM and 54% being its lowest at 12 PM. Barometric pressure is its highest of 30.13inHg at 10 AM, a lowest point of 30.03inHg at 5 AM with an avg 30.08inHg.
Port Saint John, FL Weather – 10-27 – Scattered Showers
80° / 72°
Scattered Showers
Highs will reach 80°F with lows near 72°F in Port Saint John, where scattered showers are. Rainfall predicted to have a 57% chance with an estimated 0.07in. Wind will be moderate, blowing around 15mph on average and gusts of 27.7mph at 8 PM. The humidity will be on the higher side, averaging about 71%, the maximum being 79% at 5 AM and 59% being its lowest at 2 PM. Barometric pressure is its highest of 30.07inHg at 11 AM, a lowest point of 30.04inHg at 5 AM with an avg 30.05inHg.

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