From Wikipedia:

Ajijic is located (at 20°18"N, 103°15"W) 5046 feet above sea level in the vast central Mexican plateau that is home to the Sierra Madre mountain range.

The Chapala Lake basin has a year round average temperature of about 72 degrees. Due to Ajijic's tropical latitude, the sun is warm year round; due to its relatively high elevation, it is seldom unpleasantly hot or humid. The rainy season begins in June and lasts until October with an average rainfall of approximately 34 inches. Even during the rainy season, precipitation generally occurs during the evening or at night.

December and January are the coolest months and May is the hottest, just before the onset of the rainy season. Overall, there is very little temperature variation year round: daytime highs in January are around 75 degrees; daytime highs in July are around 80 to 90 degrees.

Weather here has been completely normal.

tanstaafl.
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