Is it normal to have a faster heart rate in hot weather? Also who is more likely to get heat stroke?

Heat. when the body is under heat stress the heart rate does increase. Getting dehydrated and overheated without adequate cooling potential predisposes to heat stroke.
Yes. higher risk: dehydrated, on medications that can decrease sweating (benadryl (diphenhydramine) or similar medications, certain anti-psychotics, and many more), elderly and small children, illness with fever.
Heat Stroke! Heat stroke is the most serious form of heat injury and is considered a medical emergency. If you suspect that someone has heat stroke -- also known as sunstroke -- call an ambulance immediately and give first aid until paramedics arrive. http://www.webmd.com/a-to-z-guides/heat-stroke-symptoms-and-treatment#1.

Related Questions

I am experiencing lightheadedness, fatigue and dizziness (better by: with fluids, rest) (worsened by: hot weather, sitting upright, prolonged standing). The following also describes me: Rapid heart rate. What should I do?

Hydration. You may not be drinking enough water. Drink enough water daily so that your urine is mostly colorless.
For good health - Have a diet rich in fresh vegetables, fruits, whole grains, milk and milk products, nuts, beans, legumes, lentils and small amounts of lean meats. Avoid saturated fats. Drink enough water daily, so that your urine is mostly colorless. Exercise at least 150 minutes/week and increase the intensity of exercise gradually. Do not use tobacco, alcohol, weed or street drugs in any form.
Practice safe sex, if you have sex.
Get HPV vaccine. Read more...

Can heat when sleeping raise heart rate such as being hot from the blankets or covers and furnace?

Generally Not. Heart rate goes up in normal people by about 10 points per degree of temperature elevation, but that's "core" (internal) temperature which is extremely hard to raise in the absence of disease. The body has spent 50, 000 years learning to cool itself, and does so with great efficiency, so it's not usually a blanket alone causing this. That said, overheating is never a great idea. Read more...
Thanks for asking! Yes, when your body is warm, and your muscles are lying still, your blood vessels will dilate. This increases the space your blood volume fills. The preload, or filling of your heart will decrease which will increase your heart rate. Read more...

22y male. Heart rate when lying 55, standing up, hr goes to 120, within 3min normal again. Chest pressure and dizy when I stand up, worse with heat?

Postural Tachycardia. Some humans have an increased heart rate when standing. If you have had X ray, Holter , Echo with no conclusions and are dizzy with chest pressure, then perhaps going to an emergency room will rule out other causes. Good luck. Read more...

Can panic attack lead to: a) stroke or heart attack due to either hbp being too high at that moment or my heart rate being too too fast? Help

Needs to be high. At 32 years provided you are not morbidly obese severely diabetic or have cardiac issues its unlikely. The panic would have to have your heart beating at almost 200 and your BP would have to be quite high. If you are having a lot of panic attacks speak to your doctor, neurologist, psychiatrist and they may be able to prescribe a medication to stabilize these events. Read more...

I am suffering increased heart rate, heat flushes, sweating and speaking problem each time I speak in public. I feel so embarrassed?

Performance Anxiety. This is a common occurrence for a lot of people. There are some simple medications that can help or therapy. See your doctor for help with this concern. Read more...
Performance Anxiety. or stage fright. It is a very common problem that is very treatable. Make an appt with your local doctor. They can give you medications like lose dose beta blockers propranolol or an anti anxiety medication. Often behavior therapy can be very helpful and you may not need meds. Read more...