Weather in Portsmouth, New Hampshire
Roses open along the stoops. Day 59 of spring. Read this microseason across nine climate regions →
Portsmouth, NH
Sunday, May 17 at 4:55 AM
62
°
Overcast
Feels like
58°
Humidity
56%
Wind
9 mph
Sunrise
5:17 AM
Sunset
8:01 PM
Portsmouth, NH
Hour by hour · 24h
49°
39%
12a
49°
12%
1a
49°
2a
49°
3a
48°
4a
49°
5a
48°
6a
49°
10%
7a
49°
8a
49°
12%
9a
49°
15%
10a
50°
19%
11a
51°
42%
12p
52°
36%
1p
52°
33%
2p
53°
31%
3p
54°
4p
55°
5p
55°
6p
55°
7p
53°
8p
51°
9p
50°
10p
50°
11p
Portsmouth, NH
7-day forecast
- TodayMay 17Overcast12%86°59°
- MondayMay 18Overcast—65°52°
- TuesdayMay 19Overcast14%89°54°
- WednesdayMay 20Overcast39%87°62°
- ThursdayMay 21Overcast—62°49°
- FridayMay 22Overcast—65°45°
- SaturdayMay 23Drizzle13%54°45°
Portsmouth, NH
Next 24 hours · Cold now
Portsmouth, NH
Anemometer · 24h winds · from true
From · True
SSW
208° · backing 17°
Direction
SSW
208°
Sustained
9
mph
Gust
19
mph
Peak 24h
20
avg 8
Beaufort · 3 · GENTLE BRZ
0
CALM
<1
1
LIGHT AIR
1–3
2
LIGHT BRZ
4–7
3
GENTLE BRZ
8–12
4
MOD BRZ
13–18
5
FRESH BRZ
19–24
6
STRONG BRZ
25–31
7
NEAR GALE
32–38
24h · sust vs gust · mph
−24h−18h−12h−6hnow
Portsmouth, NH
Air quality
49
AQI
Good
- PM 2.5
- 9.0 μg/m³
- PM 10
- 10.3 μg/m³
- NO₂
- 6.0 μg/m³
- Ozone
- 106.0 μg/m³
- UV Index
- 0.0 Low
Portsmouth, NH
Almanac · Sunday, May 17
When the dew is on the grass, rain will never come to pass.
Civil dawn
8:46 AM
Sunrise
5:17 AM
Daylight
14h 44m
Sunset
8:01 PM
Civil dusk
12:35 AM
Planting note
Direct sow okra, melons, and southern peas. Thin carrot rows.
Portsmouth, NH
The moon
New Moon
0% illuminated
- Moonrise
- 9:17 AM
- Moonset
- 12:30 AM
- In sign
- ♊︎ Gemini
Portsmouth, NH
Microseason · 28 of 72
May 16–20
Roses open along the stoops
plant
Portsmouth at a glance
- Today vs. normal: 7°F below the seasonal normal for this latitude
- Last frost: May 4 (climatological average for this latitude)
- Microseason: 28 of 72, May 16–20
- Planting window: Direct sow okra, melons, and southern peas. Thin carrot rows.
Right now in the garden
Cool-season window is open
As of May 17, the cool-season window is open or about to open. Direct-sow peas, lettuce, spinach, radishes, and brassicas now. Hold off on warm-season crops until 1–2 weeks after the last spring frost (around May).