Is normal for women to out lift men in the gym

I'd say, on average, the physical strength of most women is not even remotely comparable to that of your average male.

They're probably using women's weights (Bigger but lighter).

"Bigger" does not necessarily mean "stronger." Someone may have larger arm muscles, but that does not mean he/she has stronger arm muscles.

Yes, men do tend to have greater upper body strength than women. However, as product labels and advertisements often say, results may vary.

My wife is a farmer's daughter. Salesman jokes aside, being a farm girl has made her stronger than most men I know.

Let's just say that I learned very early in our relationship that it is not a good idea to pull a scare prank on her if I want to avoid black and blue bruises.

Remember that video that seemed like a car advertisement and then some guy in green zombie makeup jumps in front of the camera? I showed it to my wife. That almost sent me to the hospital.

Women have traditionally had 90% the strength of men, but this has apparently risen to about 95% with women taking the lead in maintaining their strength, fitness and agility.

I can't wait for them to overtake us men and then we can get them to do all the heavy lifting while we just stand in the middle of the room bossing them about and criticising.

And, no, I wasn't being serious!

No! This is not normal, your a big pussy! Grow some balls & have a go!

men genetically have more testosterone, therefor more lean muscle mass. If certain women are stronger than most men it's because they're just plane stronger than yo ass! It's called creatine and protein shakes.

Just correcting some stuff posted here:

1st A female have on average 55% of a male's upper body strength and 72% of a male's lower body strength.
2nd The reason is male body structure but MAINLY testosterone levels. So everyone can understand, testosterone is the hormone that gives the "order" to the body to build muscles at both genders male and female. In male's case, they just produce much much more of it.
3rd Pound to Pound male and female muscles have the same strength, but males have much more fibers being produced.
4th Women CAN do everything a man can do, just in same cases they can NEVER do it just as good. This goes vice versa, and the topic being discussed here is an example. Given the same exercise to a male and a female, the male will ALWAYS be stronger, except of some rare occasions which can be easily qualified as hormone unbalance to the female and its an actual health problem in most cases.
5th is indeed true, bigger does not always mean stronger. The muscles fiber density plays an important. As explain earlier tho, male have more male density despite their muscles size.
6th Pain endurance have NOTHING to do with strength. Is EXACTLY like saying i can see further than you therefore i'm stronger. Having this said, on average a female can endure 10times the pain a male can.
7th Males competitiveness is "written" in their DNA, but not for them. Its for women. Mainly was and somewhat still is a way for women to pick the more suitable male to breed.
8th Males are stronger than women cause natural choice "choose" this by trial and error. Men needed to be stronger to hunt and be preoccupied with out of the house jobs more often than women who needed to ALSO take care of children. Same reason why most males can observe further with their sight while women can observe better in the rear vision.

lol, no its not normal unless you are particularly weak or you are no into a strength training.

Its normal if she have many years of hard trainning and you dont train, otherwise its not normal.

a trend???? they're training harder than you or abusing steroids.

They could have been training a long time and just not put on much muscle, you can get stronger due to your muscles becoming more efficient rather than bigger. This is more likely to be the case for women as they have lower testosterone levels and are more likely to limit calories.

Adrenaline has a lot to do with it. I'm a complete string-bean, but as a 13-year-old (I was about 120 pounds), I once lifted my 250+ pound, 6'2'' male teacher off the ground. I can't do a push-up, but I can press over 250 pounds with my legs. Technique is important too, and women have to use different techniques than men. Men usually have greater arm strength than women, but maybe these women have been working out much harder than you have.

And women are supposed to have better pain endurance, but this has nothing to do with strength.

The only way you can consider it is a trend is because more women are working out. Men are bigger and stronger in the upperbody and because of testosterone are usually stronger in the legs too (if they train). Women are stronger than men think in the legs. It is the upperbody where women are much weaker. My wife is much weaker then me in the upperbody but is slightly stronger in the legs. My daughter out lifts many of the guy in her high school in leg exercises and out runs most of the boys too. Even a trained women can over come a couch potato guy in upperbody strength.

Nope, duh, of course it's not. It obviously happens often, but naturally, men have stronger upper bodies. Everyone knows that.

It would be foolish to believe that all human males are supposed to be stronger than all human females. I believe that a girl outlifting a guy is no less normal than a guy outlifting a girl, especially if she is bigger than he is. If a girl outlifts a guy like me, my guess is that she is large (stocky or fat) while a guy like me is small (slim or skinny)--even if the guy is taller than she is!!! I had a girlfriend who was very short and very fat while I was very tall and very skinny. I towered way over her (JUST LIKE A GIRAFFE!!!) while she easily outweighed me by a longshot (by many dozens of pounds!!!). In fact, she had huge muscles underneath all of her fat which was yet another reason why I certainly was no match for her strengthwise (my muscles were very small in comparison to hers). One day, at my apartment, she easily lifted a fully-loaded, heavy barbell over her head (all the way up from the floor!!!) that I tried to lift over my head. I COULDN'T EVEN GET IT ABOVE MY KNEES!!!