From Jeff Lindner with Harris County Flood Control specific to Houston Metro and SE TX:
Another cold and frosty morning over the region will quickly give way to increase moisture and clouds.
Moisture return looks impressive today as southerly winds on the backside of the recent cold high pressure develop over the state and ahead of the next cold front. Nighttime microphysics satellite images clearly show clouds advancing along the coast this morning with a solid deck of clouds moving quickly northward from the Rio Grande Valley. Mid and high level clouds/moisture is spilling into the state from the west ahead of the approaching trough. Moisture depth increases today and the air mass begins to saturate tonight. Clouds will quickly develop today and overspread much of the region along with increasing southerly winds into the 10-20mph range. Moisture may be enough by late afternoon and early evening for drizzle or light rain along the coast as a warm front begins to approach from the SW.
Patchy light rain and showers will develop tonight as the warm front nears the coast and a cold front approaches from the west. Expect a mixed bag of weather conditions with fog, drizzle, light rain, showers and eventually a few thunderstorms on Saturday morning over the region as the cold front pushes across. Front should reach our western counties in the 800-1000am period and then the I-45 corridor around noon and offshore by mid afternoon. Showers and thunderstorms will end with the frontal passage and another cool and dry air mass will move into the region Sunday into early next week. Rainfall amounts will generally be in the .25 to .75 of an inch range with a few higher isolated totals.
High pressure overhead Sunday-Monday and then moves east allowing southerly onshore winds and a warm up/moisture increase Tuesday/Wednesday. May be just enough moisture to squeeze out some showers Tuesday and Wednesday ahead of the next cold front. This front will likely cross the area late on Wednesday with cold high pressure moving down the plains into TX for the end of next week. Christmas Eve and Day look cold and dry with lows in the 30’s and highs in the 50’s under generally sunny skies.
We had our second freeze of the season yesterday morning at 31.5f. 36.1f this morning.
Overall pattern is looking favorable for some "normal" winter temperatures and weather for SE TX for the foreseeable future into the New Year. FINGERS CROSSED!!