AUSTIN (KXAN) -- Two cold fronts in the 7-day forecast - one likely to bring an increase in rain chances, the other featuring a big drop in temperatures. FRIENDSGIVING CHALLENGE: DONATE TO THE CENTRAL TEXAS FOOD BANK Morning temperatures in the 30s and 40s will warm to the mid- to upper 70s by this afternoon. Sunshine, dry skies, light winds and seasonable temperatures will be favorable for all Friday plans. We're watching our best chance for rain arriving late in the day on Sunday through the first half of the day on Monday. Only spotty showers appear in the cards for the daylight hours of Sunday, but Sunday night through Monday morning is trending wetter with roughly 60% of the area getting some measurable rain. At this point the severe weather risk is on the low end, but the potential rainfall amounts have trended slightly higher. Areas that see rain should end up with a quarter inch to 1" by the time we dry out Monday afternoon. A cold front pushing through on Monday will knock temperatures down a little bit for Tuesday before a reinforcing shot of colder air helps to usher in the coldest air of the season for next Wednesday and Thursday. We could see our first frosts and freezes for the Hill Country next Thursday morning! FIRST WARNING: Coldest air of fall arrives next week Tropics Tropical Storm Sara formed midday Thursday in the Caribbean. The latest track from the National Hurricane Center has Sara dissipating over Mexico by Monday. Tropical Storm Sara Get the latest tropical update here. FIRST WARNING WEATHER: Stay up to date with your Central Texas forecast, sign up for our weather newsletter at kxan.com/newsletters Stay up-to-date with the First Warning Weather team Follow the KXAN First Warning Weather team on Facebook, Twitter and Instagram. You can also follow our meteorologists' individual accounts for livestreams and a little bit of what goes on behind the scenes: @JimSpencerKXAN @KristenCurrieTV @NickBanninWX @FreddyVelaWx @TommyHouseWx