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See also: Terrain

A dynamic counterpart to terrain, weather can affect movement and combat of all types of units. Weather has a big impact on logistics and how one is able to supply units. It should be noted provinces do not always have weather, and some provinces have no temperature modifers.

Night[edit | edit source]

Night gives the following effects:

  • -50% land attack[1]
  • -20% air detection[2]
  • -25% naval hit chance[3]
  • Carrier aircraft cannot fly[3]
  • -50% bombing targeting[3]
  • +10% naval retreat speed[3]
  • -90% close air support damage[4]

Weather types[edit | edit source]

Weather can have an impact on the whole state or on single provinces.

State level[edit | edit source]

Condition Air Accidents Chance Air Detection Air Mission Efficiency Carrier Traffic Naval Detection Naval Hit Chance Naval Retreat Speed Naval Speed Naval Strike Positioning Ground Bombing Targeting Organization loss when Moving Supply Consumption Factor Supply Factor Truck attrition factor
Rain.pngRain +10% −10% −10% −10% −5% +5% −5% −20% 5%
Storm.pngStorm +30% −20% −30% −80% −20% −20% +10% −10% −40% −10% −50% 10% 10% −5%
Snow.pngSnow +10% −15% −10% −15% −5% +5% −5% −30% −10% 10% −10% 30%
Blizzard.pngBlizzard +30% −30% −30% −100% −30% −10% +15% −10% −40% −20% −70% 25% 15% −25% 100%
Sandstorm.pngSandstorm +60% −90% −50% −90% −100% 25% −15% 300%

Province level[edit | edit source]

Temperature[edit | edit source]

Condition Heat Attrition Winter Attrition Division Attack Division Breakthrough Organization Regain Organization loss when Moving Entrenchment speed Fleet speed while retreating Supply consumption Supply Factor Truck attrition factor Lower Bound in Degrees Upper Bound in Degrees
Extremely cold.pngExtremely cold +20% −20% −30% −5% −60% +10% −15% 100% -100 -25
Very cold.pngVery cold +10% −10% −15% −30% +10% -25 -15
Very hot.pngVery hot +10% −5% −5% 27 32
Extremely hot.pngExtremely hot +20% −10% −10% +50% 10% 32 100

Note: Attrition from weather only applies if controller is at war.

While winter attrition can be reduced by appointing the armies to a commander with a Winter SpecialistWinter Specialist trait, there is no corresponding trait to reduce heat attrition. Commanders gain the Winter SpecialistWinter Specialist trait by fighting for a longer time in cold weather.

Flag of South Africa South Africa has a unique focus Desert Equipment reducing heat attrition.

Ground conditions[edit | edit source]

Condition Attrition Division Attack Division Breakthrough Division Defence Division speed Attacking division speed Entrenchment speed Organization Regain Organization loss when Moving Supply Factor Truck attrition factor
Snow −20% −15% −20% −25% −5% 10% −20% 50%
Deep snow –40% −30% −50% −50% −15% −5% 25% −40% 100%
Mud +70% −40% −50% 25% −15% 500%
Flooding +50% −50% −20% 25% −40% 300%

Very high snow will affect unit movement speed. Mud will increase attrition levels a lot as well as slow an army down to a crawl. A smart player will try not to attack The Soviet Union just as mud season begins or they might find a lot of their panzer divisions bogged down.

If the area is set up as being susceptible to mud during a particular time of year, and the water level over a time period is high enough, mud develops. Either rain or melting snow can be the source of the water. The game logs how much rain has fallen in a special region.

If the temperature is above 0, some of the stored water evaporates. The higher the temperature is, the higher the evaporation rate. If there is snow and the temperature is above 0, some snow will turn into water. The higher the temperature, the faster this conversion is. If there is mud (meaning there is a lot of water on the ground) and the temperature goes below 0, the mud disappears, because the water has frozen.

Weather effect descriptions[edit | edit source]

Carrier Traffic -100% means that no planes from a carrier can fly.

Supply Consumption Factor - increases the supply use of a division in a state or province experiencing that weather.

Supply Factor - reduces the rate that supplies flow into a province in the state experiencing that weather.

Terrain effects on weather[edit | edit source]

Some terrain makes it more or less likely for a weather effect to occur.

Weather Mountain Plains Marsh Desert Urban
Mud -10% +50% +80% +50%
Snow.png Snow and Blizzard.png Blizzard +80% -100% -40%
Sandstorm.png Sandstorm -100% +80%

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