Kimberley should do fine. Sungold is just as early.

Matina and Bloody Butcher are also common recommendations here for early. Then there is Siltz and Moskovich. TGS has lots of early varieties listed.

Dave

The yellow cherries (sungold?) have been first on for me in the past. I have one that will be a hanging potted plant this year started already.

I've always had good results with Early Girl out in the garden. Might be my soil and weather but they require iron posts to hold the cages up when the fruit comes on. I think everyone and most all seed displays with have that variety.

I'm a huge fan of Siletz.

Mike

I agree on the Early Girl, for a medium sized early tomato. I had great results with it last year.

- Steve

It's always good to have one or two Stupice plants working. They're the earliest in my garden, and they have a very pleasing taste. They are small tomatoes, so they're unsuitable for a main crop, but they're early enough to make you smile when you just have to taste a good one!

These are all Early to Early-mid that I have grown in Calif,

Sungold Hybrid - takes seeds a little more to get going but then watch out
I am growing Big Sungold Select (OP) this year also

Early can handle cooler spring weather
Matina like Stupice 52
Lime Green Salad - Det 52
Stupice 52
Buckbee's New 50 Day 55
Crazy 55

Early to Mid can handle cooler spring weather
Fireworks 60
Green Grape 60
Moskovich - semi det 60
Azoychka 65
Slava 65
Eva Purple Ball 68
Porters Dark Cherry 68
Alicante 70
Anna Russian 70
Black Prince 70
Ceylon 70
Jaune Flamme' 70
Pantano Romanesco 70
Tommy Toe 70

Dennis

I like Silvery Fir Tree for an early. I think it's about 58-65 days (from memory). It's on the acid side, not sweet....so some people don't like it. I love it...but that is my taste....prefer a 'tomato' bite over just a sweet flavor.

Duane

You might want to take a look at New Girl. Some like it better than Early Girl. It's a few days earlier and an indeterminate hybrid plant bearing 4-6 oz tomatoes.