Weather Conditions in Demonology are a random mechanic that alters the environment and disrupts how you collect evidence during a hunt. There are two of them right now, Rain and Snow, and each one quietly changes the rules of the investigation rather than just setting the mood.
Quick answer: Either weather type has a flat 10% chance of appearing on any difficulty and any job site. Rain disables the Energy Monitor, the outdoor Video Camera feed, and outdoor fire equipment while halving ambient temperature. Snow keeps every room cold (about 2°C to 5°C) but never drops below 0°C on its own, so a sub-zero room still counts as Freezing Temps evidence.
When Weather Conditions trigger
Weather is rolled per investigation, with a 10% chance on every map and at every difficulty level. There is no way to force it or predict it before a job starts, so the practical approach is to recognize the condition fast and adjust your kit and movement once you spot it. Both types affect temperature, which is the detail that matters most for identifying ghosts.
Rainy Weather: what breaks and what to use instead
Rain puts droplets on your screen whenever you step outside, and you can hear it falling outdoors and faintly from inside. The bigger problem is the equipment it shuts off. The Energy Monitor stops working, and the outdoor Video Camera feed goes dark, which also makes Head-Mounted Cameras useless since they rely on that same monitor.
Rain also cuts the ambient temperature to half its normal value, so factor that in before you commit to a ghost type. Fire-based tools are the other casualty. Lighters and Lanterns will not work while you stand in the rain, though they still function indoors.
Here is how to keep working through the rain:
- Carry an Energy Watch so you can still track your remaining energy while the Energy Monitor is down.
- Skip outdoor Summoning Circles. The rain extinguishes the Lighter, so get your “Ghost” photo another way, such as asking the ghost to “Show Yourself” or shooting during a ghost event. Indoor Cursed Objects like the Umbra Board or Music Box are reliable alternatives.
- Account for the halved temperature, because it can make some ghosts easier or harder to confirm.
Snowy Weather and the Freezing Temps trap
Snowy Weather covers the site in snow, drops snowmen around the lawns, and keeps flakes falling whenever you are outdoors. It does not disable any equipment, but it changes the temperature picture across the whole map. Every room sits at a low ambient temperature, usually between 2°C and 5°C, and after time passes that can settle around 0°C to 1°C.
That cold baseline is the catch. Because everywhere is already chilly, the usual trick of finding the coldest room to locate the ghost becomes unreliable, especially when the ghost roams between rooms. You will need to lean on other evidence to pin down the ghost room.
The important rule: Snow on its own never pushes ambient temperature below 0°C. Freezing Temps only counts when a room actually reads below 0°C (32°F) and you can see your character’s breath. So if a room dips below freezing during snowy weather, that is still valid ghost evidence and not just the storm.
Rain vs Snow at a comparison
| Effect | Rain | Snow |
|---|---|---|
| Appearance chance | 10% on any map and difficulty | 10% on any map and difficulty |
| Temperature impact | Ambient cut to half normal value | Stays roughly 2°C to 5°C, settling near 0°C to 1°C |
| Disables equipment | Energy Monitor, outdoor Video Camera, Head-Mounted Camera, outdoor Lighter and Lantern | None |
| Main difficulty | Lost monitors and no outdoor fire/Summoning Circles | Harder to find the ghost room by temperature |
| Freezing Temps evidence | Still valid if a room reads below 0°C | Still valid if a room reads below 0°C with visible breath |
Both conditions punish players who rely on a single method, whether that is the Energy Monitor in the rain or the coldest-room shortcut in the snow. Once you know which one rolled, swap to the tools that still work and verify Freezing Temps the same way you always would, by watching for a true sub-zero reading and visible breath. Treat the weather as a constraint to plan around, and it stops being the thing that ends your investigation.
