Environment / Field manual

Weather & day-night cycle

Weather and time of day change the world’s atmosphere; they do not establish a rush-hour schedule.

Historical official contextPage source review 2026-09-25Independent game test: not performed

Daytime and weather comparison · Official pre-release image ↗

The confirmed picture

What we know

The Highlights blog describes fixed weather and time settings as well as a cycling option.^↗

Weather changes lighting and ambient sound.^↗

Operations schematicConceptual

Survey before building

TemperateCheck terrain

SubarcticCheck source options

AridCheck available inputs

TropicalCheck crossings

Four climate zones. Confirm resource availability on the actual generated map.

From information to action

How to approach the decision

Editorial planning advice based on the confirmed systems above.

Use consistent conditions when comparing screenshots or visibility.
Treat timetable or time-of-day demand effects as unverified unless official evidence establishes them.

A mistake to avoid

Do not turn a visual night cycle into an invented night-time passenger formula.

Unverified values and test limits

Unknown values and independent test scope

Any simulation effect beyond the described presentation controls.

Official documentation, historical developer statements and editorial inspection advice have separate scopes. Exact unobserved values remain Unknown. A published global patch does not establish an independent test of this guide.

Put it to work

cargo chain planner

Use your own scenario values. No guessed TF3 presets.

Open tool

Official sources

Highlights dev blog

Page source review: 2026-09-25. Evidence policy and source ledger.