Monthly climate averages for Ithaca, United States. Based on 10-year ERA5 reanalysis data.
Cfa Humid Subtropical
Climate OverviewIthaca, United States in March has cold conditions, with highs averaging around 8.6°C (47°F). Rain falls on about 13 days this month.
This month falls at the beginning of Spring. Cold conditions dominate the month.
Daily highs in March gradually rise from around 5°C (42°F) at the start to 11°C (52°F) by month's end.
March sees fairly even rainfall, totalling about 84 mm across the month.
The warmest days tend to fall around the 31th, averaging 11.9°C (53°F).
Compared to February, this month is about 5°C warmer with 1 more rainy days. Temperatures will rise further into April.
Daily averages based on historical data (2016–2025)
Cold daytime highs of 9°C (47°F) mean shorter outdoor excursions with warming breaks. Keep afternoons flexible as tropical showers are common — they typically clear within an hour.
Wet weather can spread across much of the day, so it is best to keep outdoor plans flexible.
3 of the last 5 yearly records were warmer than this month's long-run average.
| Month | Temp | Feels Like | Rain | Sun | Humidity | UV | Status | Details |
|---|---|---|---|---|---|---|---|---|
| January | 2°C / -5°C | -3°C / -10°C | 13days (83 mm) Wet | 4.7h Fair | 76% Humid | 2.1 Moderate | Poor | View Details |
| February | 4°C / -5°C | 0°C / -10°C | 12days (82 mm) Wet | 5.8h Fair | 74% Muggy | 3.2 Moderate | Poor | View Details |
| March | 9°C / -1°C | 5°C / -5°C | 13days (85 mm) Wet | 7.2h Good | 70% Muggy | 4.2 Moderate | Poor | View Details |
| April | 15°C / 5°C | 12°C / 1°C | 15days (114 mm) Wet | 8.1h Good | 71% Muggy | 4.7 Moderate | Poor | View Details |
| May best | 21°C / 11°C | 21°C / 9°C | 14days (103 mm) Wet | 9.6h Good | 75% Muggy | 5.6 High | Good | View Details |
| June best | 25°C / 16°C | 27°C / 16°C | 12days (98 mm) Wet | 11.4h Excellent | 74% Muggy | 6.4 High | Excellent | View Details |
| July best | 28°C / 19°C | 31°C / 21°C | 13days (107 mm) Wet | 11.8h Excellent | 75% Muggy | 7 High | Good | View Details |
| August best | 27°C / 19°C | 29°C / 20°C | 12days (105 mm) Wet | 10.6h Excellent | 76% Humid | 5.9 High | Excellent | View Details |
| September best | 24°C / 15°C | 24°C / 15°C | 9days (88 mm) Wet | 8.9h Good | 78% Humid | 4.9 Moderate | Excellent | View Details |
| October | 17°C / 10°C | 16°C / 8°C | 12days (118 mm) Wet | 6.8h Fair | 78% Humid | 3.4 Moderate | Good | View Details |
| November | 9°C / 3°C | 6°C / -1°C | 14days (86 mm) Wet | 5.4h Fair | 76% Humid | 2.3 Moderate | Poor | View Details |
| December | 4°C / -2°C | 0°C / -7°C | 15days (93 mm) Wet | 4.4h Fair | 78% Humid | 1.7 Low | Poor | View Details |
Full winter gear is a must — insulated coat, thermal base layers, warm hat, gloves, and waterproof boots.
A waterproof jacket or compact umbrella is recommended for occasional showers.
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