Longview has a humid subtropical climate. Winters are mild. Average snowfall is less than 2 inches (5 cm), with usually one or two ice storms each winter. Normal highs are from the 50s–60s. Lows range from the 30s to the 40s. In Longview, the temperature rarely dips below 20 °F and occasionally can get as warm as 80 °F during the winter months. The spring season brings storms as a transition from winter to summer. Temperatures range from the 60s to 80s for the high, and the 40s to the 60s for the low. The average date of the last frost is April 4. Severe thunderstorms are common during this season as cold fronts pass through the area. This is the wettest time of year.
Summers are hot and humid. Temperatures slowly climb from the 90s to over 100 going into the dog days of summer; lows are in the 70s. This is the driest and sunniest time of year. The heat index can climb to around 110 °F.
Fall is marked by the first cold front that knocks the 100-degree temperatures down into the 90s. Foliage begins to change in late October. Temperatures cool down and dew points drop.