Cessna Skyhawk 172N Pilot Operating Handbook page 254

If snow or slush covers the take-off surface, allowance must be
made for take-off distances which will be increasingly extended
as snow or slush depth increases. The depth and consistency
of this cover can, in fact, prevent take-off in many instances.
Cold weather starting procedures are the same as the normal
starting procedures. Use caution to prevent inadvertent forward
movement of the airplane during starting when parked on snow
or ice.
HOT WEATHER OPERATION
Engine temperatures may rise into the amber range and acti-
vate the "Caution" light when operating in hot weather or longer
climbs at low speed. This warning gives the pilot the opportu-
nity to keep the engine from possibly overheating by doing the
following:
i) decrease rate of climb
ii) increase airspeed
iii) reduce power, if the engine temperatures ap-
proach the red range
Should the seldom case occur that the fuel temperature is rising
into the amber or red range, switch to the other tank or to the
BOTH position
Page 4-24
Issue 2
Revision 7, Jan. 2018
Supplement POH
Reims/Cessna (F) 172 N&P
with TAE 125-02-114