Tamika Catchings had 17 points and nine rebounds to help the Fever (12-7) win for the second time in three days since the WNBA resumed play following the monthlong Olympic break. Briann January added 13 points and Shavonte Zellous 11.
Douglas shot 11 for 17 from the field, including 7 for 9 from beyond the arc - tying her career high and the franchise record for 3-pointers made.
''It's about time,'' Douglas said. ''It's a good feeling. This morning I definitely wasn't shooting it well. But definitely in warmups, I felt really, really good. Really loose. ... My teammates just found a way to get me the ball and I was able to step up and knock down shots. And that's my role.''
Douglas, who had the previous team record of six 3s, scored 15 points in the first half to help the Fever take a 46-33 lead at halftime.
''Katie was hot,'' Fever coach Lin Dunn. ''We started calling her number and calling any plays we could think of to get her threes.''
Angel McCoughtry scored 22 points on 8-for-19 shooting to lead the Dream (10-11). Rookie guard Tiffany Hayes had 13 points and Lindsey Harding added 12.
''The Fever have a tough offense and (Douglas) shot really well against us,'' Dream coach Marynell Meadors said. ''We just weren't very strong mentally tonight.''
McCoughtry added, ''We just came out flat.''
McCoughtry had four points on 2-for-7 shooting in the first half.
''They were a hard 22 points,'' Dunn said. ''Nothing came easy for her. ... That's about the best we can do with her. She's just that good.''
Fever forward Shavonte Zellous added, ''My goal was to limit Angel's touches tonight. She got off at the end a little bit.''
Zellous admitted she was pumped up for the game a little more than usual.
''The last two years Atlanta knocked us out the playoffs,'' she said. ''We kind of have a thing against them.''
The Fever jumped out to a 20-7 lead with a 13-3 run in the first quarter. Douglas made three jumpers to put the Dream in a hole that it never recovered from. The Dream shot 22.2 percent from the field in the opening 10 minutes and the Fever never trailed.
The Fever made 12 or more 3s for the fifth time this season after accomplishing the feat just three times in the franchise's previous 12 years.
Catchings' five assists moved her to eighth on the WNBA's all-time list with 1,207.
- Indiana Fever
- Katie Douglas
- Shavonte Zellous
- Tamika Catchings