What Should I Wear Tomorrow?
Dress for tomorrow’s forecast high and low with more confidence than for tomorrow’s rain. A day ahead, temperature is usually reliable within a few degrees, while the timing of showers often moves by hours. So commit to the layers, and treat rain as something to carry for rather than dress around. Check again in the morning if your plan depends on staying dry.
A day of lead time treats the two halves differently
Planning ahead is not one decision, it is two, and they do not degrade at the same rate. Tomorrow's temperature range is usually close enough to dress against tonight. Tomorrow's precipitation is a different matter: whether rain falls is forecast far more reliably than when it falls, and a shower window that moves three hours is the difference between a dry commute and a soaked one.
That asymmetry gives a simple rule. Decide the layers now. Decide the rain gear in the morning. If you cannot re-check — because you are packing a bag tonight, or someone else is leaving before you wake — carry the rain protection rather than gambling on the window.
What to settle tonight, and what to leave until morning
| Decision | Settle it tonight? | Why |
|---|---|---|
| How many layers | Yes | Tomorrow's range is usually reliable enough to plan against |
| Coat or jacket weight | Yes | Follows directly from the overnight low and the day's high |
| Whether to carry rain gear | Yes, if in doubt carry it | Cheap to carry, expensive to be without |
| Whether to wear rain gear | No | Timing moves; the morning reading is far more reliable than tonight’s |
| Footwear for wet ground | Re-check | Depends on overnight rain that may not have happened yet |
When someone else has to leave before you can re-check
School is the common case, and it is the hardest one, because the decision is made the night before by one person and lived all day by another who cannot adjust it. Two things make it easier:
- Dress for the coldest part of the day, in layers that come off. A child who is too warm can remove a layer. One who is too cold has no options at all.
- Send the rain layer even on a maybe. A coat in a bag costs nothing; a soaked jumper lasts until home time.
The seasonal specifics are in the school winter guide and its autumn, spring and summer counterparts.
When the general rule fails
- A front is due through. When the forecast shows a sharp change rather than a smooth curve, the timing of that change is exactly what a day of lead time gets wrong. Plan for both sides of it.
- You are travelling to a different climate. Tomorrow's forecast where you are is irrelevant; check the destination, and see the packing assistant.
- The swing is large. A big range tomorrow is the same problem as a big range today, and the answer is the same: put the adjustable layer outermost.
Related questions
What should I wear tomorrow for school?
Dress for the coldest part of the day in layers that can come off, and send a rain layer even if rain is only possible. A child can remove a layer they do not need; they cannot add one they were not given.
How reliable is tomorrow’s forecast for deciding clothes?
Reliable enough for the temperature decision, which is the one that sets your layers. Much less reliable for exactly when rain arrives, which is why carrying rain gear beats planning around a specific window.
Should I check again in the morning?
Yes, if anything about the day depends on staying dry, or if a front is due through. For the layers alone, tonight’s reading is usually enough.