Seasonal Guides
The 18°C Layering System for Business Travel
The 18°C layering system for business travel. Three packable pieces handle Tokyo October, NYC April, London autumn, and any moderate-temperature trip with morning-to-afternoon swings.
Seasonal Guides
Temperature-spine outfit guides from 20 to 90 degrees Fahrenheit, plus rain and humidity overlays. Layering systems and fabric-specific picks.
Seasonal Guides
What to Wear in 20 Degree Weather
What to wear in 20°F weather. Three-layer outfit formulas, insulated boot picks, and frostbite prevention tips from real cold-weather testing in NYC.
Seasonal Guides
What to Wear in 40 Degree Rainy Weather
What to wear in 40°F rain. Waterproof hardshell, merino base layers, and insulated boots tested in 39°F steady rain on a 25-minute Brooklyn walk.
Seasonal Guides
What to Wear in 60 Degree Rainy Weather
Temperature feel54-62°F with rain making it feel 5-8° cooler Key layerWaterproof shell or rain jacket with sealed seams Base layerMoisture-wicking mid-layer, not cotton AvoidSuede, untreated leather, heavy knits that absorb water FootwearWaterproof boots or treated leather shoes Tested inPacific Northwest and Northeast, spring rainy season Sixty-degree rain is the
Seasonal Guides
What to Wear in 50 Degree Rainy Weather
Temperature feel44-52°F with rain adding a raw, damp chill Key layerWaterproof rain jacket, ideally with hood Base layerFleece or synthetic mid-layer for warmth AvoidSuede shoes, cotton layers, anything that stays wet FootwearWaterproof ankle boots or rubber-soled shoes Tested inNortheast and Pacific Northwest, spring and fall storms Rain at 50°
Seasonal Guides
What to Wear in 80 Degree Humid Weather
Temperature feel85-95°F with humidity making it feel 10-15° hotter Key layerLoose linen shirt or moisture-wicking polo Base layerNone — single breathable layer is critical AvoidPolyester blends that trap heat, dark colors, tight fits FootwearMesh sneakers or ventilated loafers, moisture-wicking socks Tested inSoutheast US and Mid-Atlantic, summer months Humidity changes everything.
Seasonal Guides
What to Wear in 80 Degree Weather
Temperature feel76-84°F depending on humidity and sun exposure Key layerBreathable short-sleeve shirt or lightweight blouse Base layerNone needed — one layer keeps you cool AvoidDark colors that absorb heat, heavy denim, synthetic blends FootwearCanvas sneakers, loafers, or comfortable sandals Tested inNortheast and Southeast US, late spring through early fall Related
Seasonal Guides
What to Wear in 75 Degree Weather
Temperature feel72-78°F — warm but comfortable with a light breeze Key layerLight button-down, cotton tee, or flowy blouse Base layerNone needed, but bring a light layer for AC indoors AvoidHeavy layers, dark jeans in direct sun, overdressing FootwearSneakers, loafers, or low-profile sandals Tested inMid-Atlantic and West Coast, spring and early
Seasonal Guides
What to Wear in 70 Degree Weather
Temperature feel66-74°F — the sweet spot between warm and cool Key layerLight jacket or cardigan for morning and evening Base layerT-shirt, blouse, or light long-sleeve AvoidHeavy outerwear, thick sweaters, overdressing for the mild range FootwearSneakers, loafers, ballet flats, or ankle boots Tested inNortheast US, May and September Related Reading * 65-Degree
Seasonal Guides
What to Wear in 65 Degree Weather
Temperature feel60-68°F with cool breezes common morning and evening Key layerLight jacket, unlined bomber, or denim jacket Base layerLong-sleeve tee or fitted crewneck sweater AvoidShorts unless very active, going sleeveless without a backup layer FootwearSneakers, ankle boots, or casual loafers Tested inNortheast and Midwest US, spring and fall transition
Seasonal Guides
What to Wear in 55 Degree Weather
Temperature feel50-58°F with wind making it feel closer to 45°F Key layerMedium-weight jacket, fleece, or layered flannel Base layerLong-sleeve shirt or lightweight sweater AvoidGoing out in just a t-shirt, thin single layers FootwearClosed-toe shoes, ankle boots, or trail sneakers Tested inNortheast US, March-April and October-November Related Reading * 50-Degree
Seasonal Guides
What to Wear in 45 Degree Weather
Temperature feel40-48°F with wind chill pushing it lower Key layerInsulated jacket, wool coat, or heavy fleece Base layerThermal long-sleeve or fitted merino crew AvoidCotton next to skin, bare ankles, skipping gloves FootwearWeatherproof boots or insulated leather shoes Tested inNortheast US, late fall through early spring Related Reading * 40-Degree Weather