This is more likely to occur in calm conditions, when air near the surface is less well mixed with air higher up. (realclimate.org)
They say the most likely explanation for the lengthening dry season in recent decades is human - caused greenhouse warming, which inhibits rainfall in two ways: It makes it harder for warm, dry air near the surface to rise and freely mix with cool, moist air above; and it blocks incursions by cold weather fronts from outside the tropics which could trigger rainfall. (climatecentral.org)
Clouds and often precipitation occur on the poleward sides of both warm and stationary fronts and whenever tropical air reaching the latitude of the polar front is forced upward over the colder air near the surface. (britannica.com)