Weekly weather forecast: Sunny with isolated rain in the capital

Sunny week with isolated rain in the capital
Mexico City will have a mostly sunny week, with just one spell of rain in the middle of the week. The high will be 22°C on Sunday, October 18, under clear skies, rising to 23°C on Monday the 19th and Tuesday the 20th, with occasional clouds on Monday. On Wednesday the 21st, as a low-pressure system moves west, occasional rain is forecast with a 50% chance and a high of 23°C. On Thursday the 22nd, with the same system nearby, skies will clear again and the high will reach 24°C. This pattern will continue through Saturday the 24th, with highs of up to 25°C.
Rising temperatures in Guadalajara and Monterrey
Guadalajara and Monterrey will both see steadily rising temperatures, mostly sunny skies and little chance of rain. In Guadalajara, the high will rise from 25°C on Sunday the 18th to 27°C from Monday the 19th through Wednesday the 21st, then reach 29°C on Thursday the 22nd and Friday the 23rd before ending the week at 28°C on Saturday the 24th. Lows will rise from 14°C to 16°C. Monterrey will see a larger increase: its high of 19°C on Sunday the 18th will rise to 26–27°C from Tuesday the 20th through Friday the 23rd, while lows will increase from 13°C to 19–21°C. Skies will be sunny with occasional clouds starting Wednesday the 21st.
Rising humidity and monitoring of pressure systems
Humidity will gradually increase in Monterrey this week, while pressure systems are monitored in the center and west of the country; no significant rain is expected on those days. Relative humidity in Monterrey will rise from 48% on Sunday the 18th to 63% on Tuesday the 20th and 80% on Thursday the 22nd, while the chance of rain remains at or below 20%. The same low-pressure system is expected to move near Guadalajara and Mexico City on Thursday the 22nd. In Monterrey, only a nearby anticyclonic ridge is noted on Wednesday the 21st, with no other pressure changes from Sunday the 18th through Tuesday the 20th.




