7 Day Textual Forecast - with QPF, Max Wind, Humidity, Snowfall & UV Index
7 Day & Night Weather Forecast for Johannesburg, CA - (Fahrenheit & Celsius)
Valid: 11:23 PM 7/30/2026
Today
Clear with a high near 99°F[37°C]. WSW wind to around 16 mph[26 kph], with gusts to near 26 mph[42 kph]. Dewpoint near 26°F[-3°C] with humidity of 22%. Pressure around 26.34 in[892.1 mb]. UV Index: 8.65. Chance of precipitation 0% with QPF of 0.00 in[0.0 mm].
Tonight
Clear with a low around 73°F[23°C]. WSW wind to around 16 mph[26 kph], with gusts to near 26 mph[42 kph]. Chance of precipitation 0% with QPF of 0.00 in[0.0 mm].
Friday
Clear with a high near 100°F[38°C]. WSW wind to around 15 mph[24 kph], with gusts to near 24 mph[38 kph]. Dewpoint near 26°F[-3°C] with humidity of 19%. Pressure around 26.34 in[892.1 mb]. UV Index: 8.65. Chance of precipitation 0% with QPF of 0.00 in[0.0 mm].
Friday Night
Clear with a low around 70°F[21°C]. WSW wind to around 15 mph[24 kph], with gusts to near 24 mph[38 kph]. Chance of precipitation 0% with QPF of 0.00 in[0.0 mm].
Saturday
Overcast with a high near 105°F[40°C]. SW wind to around 25 mph[40 kph], with gusts to near 21 mph[34 kph]. Dewpoint near 26°F[-3°C] with humidity of 12%. Pressure around 26.34 in[892.1 mb]. UV Index: 8.6. Chance of precipitation 0% with QPF of 0.00 in[0.0 mm].
Saturday Night
Overcast with a low around 78°F[25°C]. SW wind to around 25 mph[40 kph], with gusts to near 21 mph[34 kph]. Chance of precipitation 0% with QPF of 0.00 in[0.0 mm].
Sunday
Clear with a high near 104°F[40°C]. SW wind to around 26 mph[42 kph], with gusts to near 23 mph[36 kph]. Dewpoint near 26°F[-3°C] with humidity of 18%. Pressure around 26.34 in[892.1 mb]. UV Index: 8.6. Chance of precipitation 0% with QPF of 0.00 in[0.0 mm].
Sunday Night
Clear with a low around 74°F[23°C]. SW wind to around 26 mph[42 kph], with gusts to near 23 mph[36 kph]. Chance of precipitation 0% with QPF of 0.00 in[0.0 mm].
Monday
Mostly Clear with a high near 102°F[39°C]. SSW wind to around 28 mph[45 kph], with gusts to near 26 mph[42 kph]. Dewpoint near 26°F[-3°C] with humidity of 24%. Pressure around 26.34 in[892.1 mb]. UV Index: 8.65. Chance of precipitation 0% with QPF of 0.00 in[0.0 mm].
Monday Night
Mostly Clear with a low around 71°F[22°C]. SSW wind to around 28 mph[45 kph], with gusts to near 26 mph[42 kph]. Chance of precipitation 0% with QPF of 0.00 in[0.0 mm].
Tuesday
Clear with a high near 103°F[39°C]. SSW wind to around 28 mph[45 kph], with gusts to near 27 mph[43 kph]. Dewpoint near 26°F[-3°C] with humidity of 24%. Pressure around 26.34 in[892.1 mb]. UV Index: 8.5. Chance of precipitation 0% with QPF of 0.00 in[0.0 mm].
Tuesday Night
Clear with a low around 68°F[20°C]. SSW wind to around 28 mph[45 kph], with gusts to near 27 mph[43 kph]. Chance of precipitation 0% with QPF of 0.00 in[0.0 mm].
Wednesday
Clear with a high near 104°F[40°C]. SSW wind to around 24 mph[38 kph], with gusts to near 20 mph[31 kph]. Dewpoint near 26°F[-3°C] with humidity of 24%. Pressure around 26.34 in[892.1 mb]. UV Index: 8.5. Chance of precipitation 1% with QPF of 0.00 in[0.0 mm].
Wednesday Night
Clear with a low around 70°F[21°C]. SSW wind to around 24 mph[38 kph], with gusts to near 20 mph[31 kph]. Chance of precipitation 1% with QPF of 0.00 in[0.0 mm].
QPF - Max Wind Speed - Max Humidity - Snowfall
7 Day and Night - QPF Forecast for Johannesburg, CA
Today: 0.0 mm|0.00 in
Tonight: 0.0 mm|0.00 in
Friday: 0.0 mm|0.00 in
Friday Night: 0.0 mm|0.00 in
Saturday: 0.0 mm|0.00 in
Saturday Night: 0.0 mm|0.00 in
Sunday: 0.0 mm|0.00 in
Sunday Night: 0.0 mm|0.00 in
Monday: 0.0 mm|0.00 in
Monday Night: 0.0 mm|0.00 in
Tuesday: 0.0 mm|0.00 in
Tuesday Night: 0.0 mm|0.00 in
Wednesday: 0.0 mm|0.00 in
Wednesday Night: 0.0 mm|0.00 in
7 Day and Night - Maximum Wind Speed Forecast for Johannesburg, CA
Today: WSW @ 26 kph|16 mph
Tonight: WSW @ 26 kph|16 mph
Friday: WSW @ 24 kph|15 mph
Friday Night: WSW @ 24 kph|15 mph
Saturday: SW @ 40 kph|25 mph
Saturday Night: SW @ 40 kph|25 mph
Sunday: SW @ 42 kph|26 mph
Sunday Night: SW @ 42 kph|26 mph
Monday: SSW @ 45 kph|28 mph
Monday Night: SSW @ 45 kph|28 mph
Tuesday: SSW @ 45 kph|28 mph
Tuesday Night: SSW @ 45 kph|28 mph
Wednesday: SSW @ 38 kph|24 mph
Wednesday Night: SSW @ 38 kph|24 mph
7 Day and Night - Maximum Humidity Forecast for Johannesburg, CA
Today: 22 %
Tonight: 22 %
Friday: 19 %
Friday Night: 19 %
Saturday: 12 %
Saturday Night: 12 %
Sunday: 18 %
Sunday Night: 18 %
Monday: 24 %
Monday Night: 24 %
Tuesday: 24 %
Tuesday Night: 24 %
Wednesday: 24 %
Wednesday Night: 24 %
7 Day and Night - Snowfall Totals Forecast for Johannesburg, CA